Author Topic: Gunni 318i/M42 (Read 29501 times)

Gunni · « **Reply #15 on:** April 06, 2006, 01:37:09 PM »

pics and info has already been done on my website.
http://www.gstuning.net
from a previous install in another car.

jens · « **Reply #16 on:** April 06, 2006, 02:57:06 PM »

Ok i know.

Gunni · « **Reply #17 on:** April 06, 2006, 06:54:07 PM »

As promised I�m the best,

I installed the SMT unit along with the wb controller, no sensor in the exhaust yet, but I did connect the MAP sensor and TPS to the SMT unit and WB unit,
Also I connected the MAP sensor into the SMT as a MAP signal and a analog signal, thus beeing able to fiddle with it ,
I connected the AFM signal in as temprature signal but only to monitor the voltage on the graph, I then mod the MAP signal until the AFM signal and MAP signal are identical, then I remove the AFM signal from the ECU and tap in the modded MAP sensor signal into the ECU

I will have to make up a housing for the temp sensor and a resistance for the old AFM circuit, but more on that later,

I noticed I had about 14-15psi vacuum and not so good idle,
I advanced the ignition 10degs on a couple of spots and now
no more hesitation of idle and idle is alot better and vacuum is about 17psi

I�m about 85% way there to a ignition controlled and fuel by MAP sensor controller M42,,

I didn�t solder the wires as I wanted to make sure it all worked ,
Also I need to reroute them to make it look better,

I was VERY pleases with the ignition controll as it�s always been a hassle on other cars I have put SMT units on,

I think it might take me about a week of real hard monitoring to get the MAP output configured for replacement of the AFM signal,

I�m very happy

Gunni · « **Reply #18 on:** April 07, 2006, 02:42:29 PM »

95% way there,

today I and Stef�n went on a drive ,, we where able to map out the MAP output to almost simulate the AFM signal identically.

idle is done,
most of lower part throttle, WOT almost, I will have to do some datalogging to finish this up,

then it�s time to simulate the presence of the AFM for the ECU and cut the MAP output signal into the ECU I will have to install the air temp sensor into the intake path also, this is probably the most problem

, I will have installed a Wideband sensor when I do that, to be able to fine tune and make things work better,

NOTE : I was able to monitor the AFM signal, and at about 4-4,5k the signal goes wobbly, probably the harmonics of the intake messing with the flow,

Gunni · « **Reply #19 on:** April 26, 2006, 02:23:36 PM »

Here is a text file with the Wideband AFR measurements I just did,
http://www.gstuning.net/files/files/m42stuff/m42brakes_on.txt

This is WOT readings.

So you can see that there is some room to manipulate to go a little
richer.

Gunni · « **Reply #20 on:** April 27, 2006, 04:41:54 AM »

Today might be the day I move over to the MAP signal,
I will not be able to remove the AFM just yet as I haven�t gotten myself a replacement Air temp sensor and don�t want to ruin this fine AFM,

I also am planning on hitting the 1/4 mile tonigh, so news tomorrow

tim_s · « **Reply #21 on:** June 27, 2006, 03:55:18 AM »

gunni do you have news and spec of your SMT setup? be nice to see!

Gunni · « **Reply #22 on:** September 14, 2006, 10:05:44 AM »

Hey, not really, I�ve been staying away from this forum to keep me away from the M42

, as I need to keep my mind on these M30 swaps I�ve been doing

The engine now sits in my garage and the checkerd interior I have
also the rear end, and front end,

I had the car tossed as it was in the way and dying on me,
I have since picked up another car, a 316i 4door weinrot,
I will build this into the winter daily when I finish a 333i I�m starting to build

I�m really tempted at finishing the map swap , It was all ready , just had to unplug the maf and install a IAT sensor and wire it back,

Also the car has a tow hook

I love those tow hooks, they make the car so versatile.

pics later,

Gunni · « **Reply #23 on:** November 13, 2006, 10:10:32 AM »

Well I�m on my way back in the sattle of a M42,
on my way are headbolts and a top gasket set,
so when that is done the engine is ready for it�s new house

a 4door veinrot e30 with a tow hook..

I�ll post pics as things take shape,

I�m going to use the wideband and proablably SMT6 again,
I really am going to run without a afm to try and see if there are gains to be had with fuel and ignition control + no afm.

ohh a 3,91 IX viscous LSD ,,
and yea pics as things develop