Messages

1

Electrical / Ignition Cut

« on: February 08, 2007, 06:30:39 PM »

I wired up a relay with a trigger button that successfully cut the ignition to 1 cylinder, but after a bit more research apparently interrupting the ignition will lead to fuel damaging piston rings and contaminating your oil.

I'm going to abandon this.  I love my engine more than I love flames.

2

Electrical / Ignition Cut

« on: February 07, 2007, 06:18:08 PM »

Thanks John, I had actually had a look at the jaycar kit when I saw it on your website (I really liked what you did with yours with the 3 lights at the top of the dash and will probably do that myself soon

When you say disconnecting the coil may damage ECU, do you mean disconnecting power to the coils or interrupting the trigger signal from the ECU?

I'm not willing to risk damage to the ECU so if you mean power to the coils thats out of the equation.  On the other hand I can see how the trigger signal might be safe to interrupt... My logic is that I'd be like a piggy back ECU (that only cuts ignition to make flames haha)

3

Electrical / Ignition Cut

« on: February 07, 2007, 09:24:52 AM »

My main concern was whether there was an easier way to do it than to individually interrupt the signal along each of the 4 wires to the coils.  If there was a way to cut the entire ignition process with 1 wire it would be easier because I could use a simple single pole switch from an electronics store.

Otherwise I'm not too sure how I would wire it up to cut 4 wires with 1 button; maybe using 4x relays and a master switch?

Edit (to make things clearer and correct my own stupidity):

Basically, I can see that interrupting the wires connected to ecu on pins 24, 25, 51 & 52 will interrupt the ignition signal to coils for cyls 3, 1, 4 and 2 respectively, thus cutting ignition.  Can anyone suggest an easier way that involves only 1 wire?

4

Electrical / Ignition Cut

« on: February 07, 2007, 06:12:16 AM »

Hey everyone,

Finally got my car back (don't ask) and while getting it washed at a car wash cafe I picked up a drifting magazine they had to read while you get your car washed.  I saw a review of a Bee*R Rev Limitter (sic) that worked by cutting ignition instead of cutting fuel... apparently this would be a less drastic cut and would leave the car on boost, etc.  However, an interesting side-effect was that as fuel was still being supplied, a flame would shoot out the exhaust.

Seemed like a nifty little unit, had 2 rev limits, 1 to be used as the high limit, one to be dialed in as a launch control type limiter for drag racing, toggled by a switch.

Now for the question: Is there a way to cut all ignition with 1 wire or will I have to interrupt all 4 wires running out of the ECU?  If so, what pin on the ECU connector is it?  I've looked at the wiring diagram and can't work it out.

I'm keen to make myself an ignition cut-off switch regardless.  I've always wanted to shoot flames at tailgaters... I didn't realise it was this easy.

5

General Topics / Overhead gauge pod,hmm

« on: January 09, 2007, 11:07:26 AM »

Put in a small LCD with a reversing camera

6

Swaps, Turbos, Buildups / stock manifold adapter

« on: January 08, 2007, 09:02:19 PM »

I love this idea and I'd love to see pics of a fit-test

7

Electrical / Blown fuse...

« on: July 05, 2006, 01:00:48 AM »

Install a higher rated fuse

8

Swaps, Turbos, Buildups / M42 Turbo Manifold

« on: June 22, 2006, 04:52:10 AM »

Will this manifold fit a RHD?

9

Electrical / Closed Loop Monitor

« on: June 21, 2006, 02:06:09 AM »

Legend  I initially tried to access the pages by typing in page names manually but that didn't work so it never occurred to me it would for the images.

Well done

10

Electrical / Closed Loop Monitor

« on: June 20, 2006, 07:29:47 PM »

http://autospeed.drive.com.au/cms/A_1716/article.html

Does anyone know how one of these works (read: how I can make  one without subscribing to that website )?

11

Engine + Driveline / A/F ratio adjust

« on: June 20, 2006, 09:53:35 AM »

thats the on eim talking about.  what it does is adjust the amount of air that bypasses the flap, therefore adjusting your rich/lean mixture - if you have less air bypassing it, more air moves the flap and therefore ecu gets signal to run richer.  however, on closed loop the setting doesnt matter (as long as its not way off tune) because the mix get re-adjusted according to the O2 sensor.

on idle and wot is when the tuning of the AFM is important.

i was running lean at wot so i removed the little circular cap and there was a brass screw. turned it 40ish degrees clockwise (turning the screw in makes it richer)  and now the wot a/f reads a touch on the rich side, as opposed to way on the lean side.

12

Electrical / Odometer issues

« on: June 20, 2006, 08:37:21 AM »

Update:  Odometer hasn't actually been working correctly.  While the all other dials give an accurate reading, the odometers are reading less than they should.  My odometer was reading 3.9 when we had actually gone 9.0 according to another car that was accurate in its readings.

Not sure why its doing this but once I figure it out I'll be sure to post about it.

13

Engine + Driveline / A/F ratio adjust

« on: June 20, 2006, 08:26:34 AM »

I wasn't going to be attempting to tune it with a narrowband sensor, just adjust it slightly because I don't like the idea of running lean.

Curiousity got the better of me and I turned the screw just under 45 degrees inwards; now its running a tad on the rich side which was the desired effect.  I know the stock position so I can always set it back.

From all the reading I've done regarding A/F tuning, don't you always want it to be a tad rich (or at least stoich) when you're under power?  All good to run it lean when you're cruising because you're not developing much power or heat, but in terms of engine life running it a little rich will keep the cylinder temperature down too; less heat stress to the engine doesn't sound like a bad thing to me either.

e9nine, as you can see I'm a bit of a theorist but also I rarely follow advice unless the reasoning behind said advice is explained to me . Why would I want the car to run lean at WOT, as far as I understand lean = bad for everything but the environment.

14

Engine + Driveline / A/F ratio adjust

« on: June 20, 2006, 05:41:10 AM »

I just installed an A/F ratio meter today and it seems that the mix really leans out above 4000 rpm on WOT (note: I have the ProFormance chip)

Obviously, when its running closed loop and the O2 sensor reading is being used, the mix is okay, bouncing back and forth between rich and lean so thats okay but its got me a bit worried that its running lean (pretty much as lean as the meter will show).

Will adjusting the screw on the AFM make it run richer at WOT?

15

Swaps, Turbos, Buildups / m47 crank value?

« on: June 18, 2006, 11:10:20 PM »

M47 is a 4 cylinder diesel featured in the E46 3 series.