Messages

1

Swaps, Turbos, Buildups / Adapting 55 pin M1.3 Megasquirt to 88 pin M42 engine harness

« on: February 14, 2018, 08:28:18 AM »

I have been looking into running my 318is on megasquirt (in preparation for turbo). I was hoping I could get some help with a couple things on the wiring between the two engines.



I have DIYPNP MS2 unit with 3 BIP373 drivers and I know I could add one more driver and wire in the cam sensor to make it run. I tried to trace the pinouts and was wondering if any of you could verify my wiring connections and answer a couple of questions about the ignition settings. Here are the two ETMs that I was using to verify my connections, one is for the e36 m42 with maf so slightly different from e30 m42. See attached for where I am at. I also used the 55 pin table from nando's 325ix website to compare to m1.3 wiring.


http://www.armchair.mb.ca/~dave/BMW/e30/e30_92.pdf
http://www.armchair.mb.ca/~dave/BMW/e30/e30ix_90.pdf


1. How do I power the coils? Looking at the ETM these are run individually, as sequential ignition. I have 3 drivers. Can I just set up for wasted spark using 2 drivers as is?

2. In order to run wasted spark, do I need to utilize/ add in a provision for the cam sensor?  How does the engine know when to fire each back? Is that why the cam sensor is required, or can it just use the crank sensor without the cam sensor wired up? Will I need to run Dual Wheel with missing tooth? Or can I use the Cylinder ID sensor with the connection from the cam sensor on the m42?

3. Do I need to tie all of my grounds together? Or can I just pick a ground and match it up with another ground between the two ecus?

4. The m42 uses a 2 wire ICV while the M20 uses a 3 wire. I am left with only one input for the ICV currently on the m42 harness. Can I set it up similar to the 3 wire and just set the % open value in tunerstudio to get it to modulate between that and 0 when it goes into idle mode? Essentially i would calibrate the ICV as an open only type unit and would find where that open point is, if that makes any sense. I missed it above but pin 29 needs to go to pin 4 (or pin 22 depending) on the m1.3 harness.

5. I know the wires of the TPS need to be changed from WOT switch style TPS to the variable that the m42 runs. But when I look at the ETM, the m20 engine doesn't show which wire is the ground. Does pin 12 go to 52 or 53? Same with pin 59. Is the tps ground shared with the afm ground or similar?

6. Does the diagnostic port need to be connected? I am not sure those do anything, Is that to the port under the hood for resetting the oil light etc?

7. Does anything else look backward or like this wouldn't work? I think the coils firing correctly and the icv are the hardest part of making this work.

8. Do any of these wires need to be shielded? How do I go about doing that?

2

Member Profiles / Re: Downforce22 Introduction/ '91 318is Track Car

« on: January 30, 2018, 11:37:17 AM »

Here is a fun video from Drive 4 corners 2016.

https://www.youtube.com/watch?v=Ug8Doq-Ky7s

Also, if you can't tell, I picked up a mosselman m42 turbo manifold and upgraded gt25 turbo with billet wheel.

I need to do the m20 clutch upgrade and timing component upgrade but have everything but the TOB and clutch alignment tool to do the clutch swap and timing refresh.

Then its turbo time, maybe later this year.

3

Member Profiles / Re: Downforce22 Introduction/ '91 318is Track Car

« on: January 30, 2018, 11:35:18 AM »

I haven't posted in some time, here is some information in the time off.

I kind of forgot about this thread, but why not update it. I had planned for a track day with my brother at the local track. Unfortunately it was cancelled the night before due to flooding so my brother and I took a cruise up to cripple creek and the small gold mining town of Victor. He brought his turbo e24 and we had a fun drive up to 10,000 feet.









I also got pulled over for the first time in the car for not signalling out of the above lot.


I ended up driving this car to 2016 Drive4Corners BMW meet in August of '16. It was a blast and averaged almost 30 MPG. Apparently I got some votes for fan favorite too, but not enough to win.















The monday after the event, when we went to leave, I started the car and it stumbled bad at idle. After some gas, nothing, and I looked under the hood. Immediately I noticed the hood support that I had replaced was gone as I held up the hood. I looked down to see the m42 plastic cover off, clips broken and 2 spark plug wires missing. One problem with the car was an ignition key that didn't match the doors or trunk so I couldn't lock the car. Apparently somebody went to the trouble of removing the parts, latching the hood and making it appear as if untouched. :dontknow::mad:

The local autoparts store couldn't get wires until the next day so I ended up having a roommate from the town of the event and I drove the car 10 miles out of town on 2 cylinders to his parents house where I parked it, smoke coming otu of the exhaust, and hitched a ride with my brother and dad back home since I had work the next day. I decided to go back with my then current roommate later at some point. Surprisingly I was able to hit 65 mph on 2 cylinders in the car, but it definitely wasn't too happy.

So a month or so later I rode back to my roommates parents house with him, armed with a full set of spark plug wires, and I scoped out the area around Durango, CO where I met with the property manager of a site for the planned 2017 Drive 4 Corners event. I took a couple pics of the journey back home and she finally made it home in one piece.









I decided the livery needed some sprucing up and added a small graphic to the hood. Soon after I found a set of 15x8 Kosei K1's in e30 m3 offset with Hoosier slicks. On that trip the fuel pump was acting up and I eventually replaced it in October of '16. I replaced it with the carquest pump and soldered it in to fit. Next up was a trip to the track with a bunch of BMW's and my new hood decal.

















My older brother even took his tow rig out on track, an X5 4.6is. Note this same X5 pulled away from me as we raced down Wolf Creek Pass, check out the video here. Take a look near the end of the video
https://youtu.be/Ug8Doq-Ky7s






Here is a video from on track. Youtube links seem to be down so one in car and another against my brothers euro 635csi.

https://www.youtube.com/watch?v=IrSau0dbII4

https://www.youtube.com/watch?v=8d8nbPVvVnA

Here is a mustang with me and my brother passing him on his 'hot lap' into the last few corners past the 2 and a half minute mark.
https://www.youtube.com/watch?v=Q-FAZXN2lsk







So the track day was a blast and the car performed great. Until. I let my brother drive 'Old Faithful' as I have come to know it after the coolant incident and the fact that it keeps on trucking. This was a true test of it's strength. I have a voltage gauage that helps me check when the sometimes wonky temp gauge goes bad as well as a electrical temp gauge where the obc used to be. In this case, both gauges were working and somewhere around the 3:30 mark the waterpump/alternator belt must have come off. Normally the obc area gauge points at 12 o-clock .We thrashed it around the track for 2 whole laps as you watch the temp gauge climb well beyond the safe zone. We noticed and had another full lap to bring it in to the pits. After some coolant it drove me home no problems.

https://www.youtube.com/watch?v=z0Mgvu-aQCo&lc

Only one picture of this but I took a trip out to Moab, bombed out on friday, ran my first ultramarathon and was home by Sunday night. It is nice camping next to your car, can't say I ever slept that close to one before.



Earlier this year I took a trip to the track that was rained out last year. It was pretty fun. No pictures really but here is an in car video and another from a miata following me with speed and splits.

https://www.youtube.com/watch?v=xcuuZNpJIHk

https://www.youtube.com/watch?v=9XtAW09tnzo

I just ordered a couple of things for this car and will be fixing the following:
- Exhaust leak out the headers, new gaskets and I hope that is the solution
- Reverse lights, I ordered a new reverse light switch and just need to install
- Raid 260 mm steering wheel. This should be sweet but I may need power steering back in the car
- Fan/ Wiring, the hvac fan stays on after the car is off and key out of ignition so for now I pulled the fuse but have not troubleshot further, open to ideas.
- The clutch slips a bit on track so I will need to pull the engine to check the clutch. I figure it would be a good time to look at the exhaust gaskets, possibly change the timing gears, and check out the timing components.
- I picked up a spoiler and am going to look at an e30 in the junkyard tomorrow to see if it doesn't have the spoiler holes like most iS trunks.

___________________________________________________________________________________________________________________________________________________________________

So the car developed a slight misfire and after driving it I was pretty sure it was the fuel pump which I replaced last year with a carquest special. So I ordered a Bosch 040 after reading that it is a drop-in replacement for the in tank pump and that it can support crazy amounts of horsepower. However the company I bought it from says it was out of stock and will not ship for 3 more weeks...

So the cluster had been at a friends shop for a while and after I picked it up, it was not in the same condition as I dropped it off. The needles were replaced with some orange (possibly 3D printed) ones and the gas gauges wasn't reading right as well as some of the screws, so I took it apart to repair. Here was when I got it back.



And I had some chrome trim rings laying around so I put them in before they get broken. I am on the fence about it. I also took the center console apart a fixed the temp gauge bulb that was burnt out. Here is how it looks at night now. I may add more light since it is still dark inside.



With a new chip in the car, I had to represent my tuner so here is the latest decal.



Then I found a deal on a 360mm raid steering wheel. The wheel is small and without power steering can be hard to turn when going slow. I am unsure if it will be good on track because of the amount of effort required. It also block the top of the gauges where you would see the 70 mph mark and the 4-5-6k rpm area. But it looks cool and feel pretty good so I may keep it for a while or revert back to power steering.



I tried to install the new reverse light switch but the reverse lights still dont work so I need to check the wiring eventually. Also the hvac fan did not stay on, I have heard it could be a sticky relays that causes this so I may replace it soon, but it has been working correctly lately so I am not worried about it.

Recently, I found a Coil on plug kit for sale so I picked it up and installed it last night.



I don't think I picked up any power but the engine does not misfire anymore and seems to run smoother at low rpms. I still have the fuel pump coming and will have to see if the fuel pump was causing problems or if it was just the wires and oem stuff causing problems.

The last thing I have been looking at is running the m42 on megasquirt. I picked up a spare diypnp 55 pin ecu and may make an adapter to run the 55 pin ecu. I need to see what matches up with what but there are only a couple of items that may need some time spent to figure out. I was curious about how to run the ignition and found base setting and this guide on the diy page.

Direct Coil Control
Rule of thumb: If your coil has only two terminals, and there’s no ignition module outside the ECU, use this. Also applies to 4 cylinder coil packs with 3 terminals and 6 cylinder coil packs with 4 terminals when not used with an external ignition module.

Common in Bosch and Seimens ECUs, almost unheard of in ECUs of Japanese origin. There is no external ignition module, and the ECU controls the current running through the coil directly with a power transistor. You can order BIP373 power transistors to install in the DIYPNP for these types of ignitions. On cars which originally used an external ignition module, this can open up other ignition options directly controlled by the ECU. For example, if you want to convert your ’90-’97 Miata to use one MSD coil for each plug, you can use these outputs to fire the coils without an external ignitor.

The BIP373s install in the Q1 through Q4 slots, using a heat sink as included in the DIYPNP BIP373 mod kit. Here’s what components are in each spark circuit.

Spark A: Q1, R13

Spark B: Q2, R12

Spark C: Q3, R11

Spark D: Q4, R10

When using the high current ignition drivers, they must be enabled with the jumpers marked High Current Driver Select. These jumpers are marked S1 through S4, for spark outputs 1 through 4 respectively. To enable the first two high current drivers, jumper the lower holes to IG1 and IG2. The second two may be enabled in sequential or wasted spark fashion. Jumpering the middle holes to WLD and ALD will trigger these from WLD and ALD respectively, allowing for sequential coil on plug on a four cylinder or wasted spark on a six or eight. Jumpering the center holes to IG1 and IG2 will allow “wasted spark COP” output on a four cylinder, letting you use two processor outputs to fire four coils in a wasted spark fashion.

 

Spark Output DIYPNP



The picture above shows it jumpered for four separate spark outputs.  You’d set it up this way for 4cyl sequential ignition, or for 8-cyl wasted spark (using two 4-tower wasted spark coil packs).  All outupts, S1, S2, S3, and S4 would be used.  These are the outputs to the ignition coils.



Changing the second two jumpers drives all four transistors from the IG1 and IG2 signals for wasted spark COP on a 4cyl.  (Wasted spark COP means having an individual coil for each cylinder, but firing them in pairs in a wasted spark manner.)  You would still use all four outputs with this configuration, S1, S2, S3, and S4.



Using only the first two jumpers as in the above image would control a 4cyl wasted spark configuration, such as controlling either one 4 tower coil pack, or two dual tower packs.  This setup would use only outputs S1 and S2.



The above configuration would be for either 3cyl sequential or 6cyl wasted spark.  Outputs S1, S2, and S3 would be used for this setup.



Using only the first jumper would be the correct configuration for direct control of a single coil used with a distributor.  Only output S1 would be used in a single coil setup.

 

If using spark outputs C or D, you’ll need to install 100 ohm, 5 volt pull up resistors in the R2 and R1 slots respectively.

Spark A: S1

Spark B: S2

Spark C: S3 (requires MS2/Extra 2.1.1 or higher, or wasted spark COP jumpers)

Spark D: S4 (requires MS2/Extra 2.1.1 or higher, or wasted spark COP jumpers)

Spark output must be set to Going High / Inverted.

https://www.diyautotune.com/support/tech/hardware/diypnp/documentation/diypnp-v1-5/ignition-control/

I took the DIY 55 pin cover off and looked at what was there. It looks like it has 3 BIP373 drivers.






Here is the settings varg was running on his m42:


(https://www.r3vlimited.com/board/showthread.php?t=374858)

Here is my question. Can I run the m42 with wasted spark by using only 2 of the coil drivers (wasted spark)? If so, where do you set this up in the tunerstudio program?

Should I add a fourth BIP circuit so I can run each coil individually (sequential)? Do I need to? Am I looking at this all wrong?

e30 turbo bottom mount for reference http://www.m42club.com/forum/index.php?topic=7731.165

A couple links for future reference
https://www.miataturbo.net/diy-turbo-discussion-14/gt2554r-vs-gt2560r-vs-gt2860r-vs-t3-50-trim-90858/page4/
http://www.enginebasics.com/Advanced%20Engine%20Tuning/Turbo%20Chart%20Mitsubishi.html
http://photobucket.com/gallery/user/mxlntnr/media/cGF0aDpUdXJibyBTdHVmZi9QMTAzMDQ5My5qcGc=/?ref=1
http://www.z3forum.nl/forums/topic/16699-bmw-z3-19-m44-mosselman-turbo-bezitters/
https://www.youtube.com/watch?v=ryZeHcj1cLo&t=33s

4

Member Profiles / Re: ForcedFirebird has gone to the dark side.

« on: January 30, 2018, 11:31:26 AM »

welcome, the 4 bangers are lovely little engines

5

Engine management / Re: M42 ECU pinouts

« on: October 27, 2017, 09:47:08 AM »

Is this the pinout for the e30 m42? I am having trouble finding that.

6

General Topics / Re: New to forum, unsure what to do with m42 before swap

« on: September 19, 2016, 05:23:29 PM »

why not diagnose the engine first before jumping to conclusions on what needs to be replaced?

Mine had 220k miles last documented in like 09. I've put over 7000 miles on it since I bought it late in '15 and it still runs great. 30 mpg on my last trip this weekend and thats after a track day and a 1000 mile road trip. She hasn't let me down yet and I haven't opened it up beyond the upgraded timing chain tensioner.

7

Member Profiles / Re: Downforce22 Introduction/ '91 318is Track Car

« on: September 14, 2016, 05:42:47 PM »

Well the car has been driven quite a bit. I've put 7000 miles on it since purchase. I tried for a few more track days but was turned down due to flooding and not enough sign ups.

Most recently I went to the Drive 4 Corners BMW meet. The night before I was to leave I came out to the car and started her up. It wasn't running right so I popped the hood and found somebody has vandalized the car.

They took the hood shock, took off the spark plug wire cover, and took 2 spark plug wires...

I limped it to a friends house where I left it as the local auto parts store did not have any wires in stock. I managed to get some replacement wires and am going to get the car this weekend. In the meantime, I had averaged 30 mpg on the trip out there and found a few shots of me rolling hard in the BMW crew.

8

For Sale / Re: FS: Rare OZ Routes

« on: August 09, 2016, 12:28:45 PM »

where are these located?

9

Member Profiles / Re: Rolandas E36

« on: April 29, 2016, 11:37:41 PM »

awesome ITB adapter! How much would an adapter like that cost?

10

Member Profiles / Re: Downforce22 Introduction/ '91 318is Track Car

« on: April 18, 2016, 03:01:29 PM »

Thanks yeah, that was one thing I noticed. It was unconscious, but I might need a smaller diameter wheel or something. Maybe I was used to the non z3 rack which usually needs more input.

I also wasn't very smooth with my steering inputs. That is something i need to work on when I get into a faster car. The 325i had better tires but really pulled away later in the day on the hills with the extra torque. I could catch him in the braking zone but was just having fun, didn't need to get super aggressive and risk a wreck. Without ABS I only locked up the wheels once, so it was super easy to drive you just have to wring out the m42 and at altitude it has less power.

In other news I was driving on a dirt road to go for a run at about 8000 feet two days later. I did my run and was coming down the hill when all of the sudden my gas pedal didn't have any resistance. It turns out the metal stopper on my throttle cable snapped off and I didn't have any tools to fix it. I was lucky in that I was able to coast the last mile downhill and creep in first gear over this little hump to coast to the visitor center trading post of the park. I jimmy rigged a vice grip on the end of the cable to modulate my throttle and made it home. I ordered a new throttle cable but was surprised that broke off. I never had anything like that happen and am glad it didn't happen on my 1000 mile road trip or on track or something.

Full link to the video
https://www.youtube.com/watch?v=F7JQ20zucqM

11

Member Profiles / Re: Downforce22 Introduction/ '91 318is Track Car

« on: April 17, 2016, 08:33:14 PM »

Track day went well, no problems. I ended up hauling 7 tires and other stuff up to denver in the car which made it noticeably slower on the way there.

First thing is first, and that is that the car made it to the track! Much better than the last attempt. There was a huge turnout at the track so the first sessions sucked having to follow and dodge people not on the racing line that would kill my speed. A few friends came with and I was about as fast as a 325i with full interior.

The last session was combined due to a fluid spill and so I ended up with a full 45 minute session on track and some intense racing with my brother. My gropro ran out of memory unfortunately for that part. I decided to come in due to a low fuel light that had been on for about 5 laps. In total I let 2 others drive it and had 3 passengers. The car did 65 miles to the track the morning of, 150 miles on track and 40 more before I filled up. I got somewhere around 18-19 miles per gallon, pretty good i think for an unknown motor.

The brakes work great on track but the taller gearing definitely hurts as I didnt get into 5th at all on track. I also had huge wheels/tires with the 5 lug swap. Another engine would be awesome in this car but the m42 is so dang tough and reliable. If I averaged 2:30 per lap and did 60 laps, that is 2.5 hours of racing. I felt a hiccup uphill above 6500 rpm, not sure if it was the rev limiter or what but I just shifted. The only other issue was the clutch would slip some at higher rpms late in the session. I am assuming either it was just getting hot, or it is getting worn down. Maybe i'll try that m20 flywheel/clutch swap at some point.

I had a ton of fun and several hours of seat time so I am happy how the car performed after my repairs. As it crossed the 5000 mile mark, it has earned its nickname and become a reliable track car. Enjoy the photos and quick video I made.







































[youtube]F7JQ20zucqM[/youtube]

12

Engine + Driveline / Re: Did we ever figure out the "Hot Start Problem"

« on: April 15, 2016, 03:25:48 PM »

I think if you have a euro-spec car (assumption based on license plate), then you don't have the O2 sensor and the wire should be connected. You've got other issues.

Agreed, that is how the wiring diagram shows it. I would recommend checking for fuel and then spark ad go from there.

13

Engine + Driveline / Re: Gas pedal went out???

« on: April 15, 2016, 03:22:04 PM »

The crimped piece on my throttle cable broke off as well. I ordered a new cable. Looking for other people who have replaced this cable, seems like an easy enough job.

14

Member Profiles / Re: Downforce22 Introduction/ '91 318is Track Car

« on: April 07, 2016, 10:40:23 PM »

Did some repairs on the car today including strapping the battery down, passenger door handle/card, removed useless wiring, fixed trunk light, made a mount for my secondary engine temp gauge out of the factory 6 button obc face plate. Bummer my bumper mounts havent come but everything else is looking in place. Cross my fingers the car holds up unlike the last attempt back in october. Passed the 4000 mile mark since getting it fixed!

I will bring the camera and go pros to the track!

15

Member Profiles / Re: Downforce22 Introduction/ '91 318is Track Car

« on: March 18, 2016, 09:56:33 PM »

I think the cam gears look pretty good, I read that they get rounded when worn and to me they look decently pointy. Regardless, I doubt it will cause any problems, especially after I took it on that near 1000 mile road trip in under 15 hours and it didn't miss a beat. The m44 tensioner is in and that is as much as I can do without replacing timing chain components.

I solved one of the rattles in the rear while prepping for the autocross. There was a nut on the spare tire stud that would rattle at certain frequencies. Once i removed that, the rear of the car does not rattle now!

The front strut bar came in the mail. It is the garagistic m42 bar so that should help at the upcoming track day with the sticky bridgestones.

The powersteering delete plate also came so I can install that and not worry about getting dirt into the rack. With this mod completed, I may try for the local colorado rally cross events at some point.

I also had taken the front bumper off to find it was held on by two drywall screws, so I was able to find two used plastic front bumper mounts/bolts. list price online has the mounts at $160 EACH so I scored two on r3v for $50 shipped so I can't wait to get that on and make sure I have a tow hitch on the front of the car. I notice the rear looks like it has been sheared a bit and may not be all that strong.

A few pictures from the autocross event were posted and you can see me in the promotional video at 42 seconds and 1:09, as well as the one I made.

https://www.youtube.com/watch?v=4PgpCl56SJk

https://www.youtube.com/watch?v=3NMIPzJ4Qi0