Timing map

[JamesO]

Just fitted Microsquirt as per a thread on rennlist (pre built megasquirt 2 in a small case). After a bit of messing around I have the car running and driving which is good.
I had to add an inlet temp sensor, I was hoping to use the one in the AFM, but it wouldn't work, all other sensors are as stock with the exception of the wideband o2 sensor to help tune the thing. Oh, and a manifold pressure sensor.
Cant play too much as my laptop is playing up which is annoying.

I have the North American timing map, does anybody know where I might find the European maps or if they are much different? I know they have a lower compression ratio on their 944 lux's

 

[Fen]

Well done for actually doing it!

Surely unless you get a custom map for your car the main benefit of the EMS is lost though, isn't it?

 

[homesea]

Not sure about the 2.7 but the 2.5 in '88 had lower compression then the earlyer cars the same as a US spec motor. So you might find the maps are the same.

Love to see how pans out, about time someone did this to a Lux.

 

[edh]

ORIGINAL: homesea

Not sure about the 2.7 but the 2.5 in '88 had lower compression then the earlyer cars the same as a US spec motor. So you might find the maps are the same.

Love to see how pans out, about time someone did this to a Lux.

are you sure? - I thought it was still quoted at 163bhp

 

[JamesO]

ORIGINAL: Fen

Well done for actually doing it!

Surely unless you get a custom map for your car the main benefit of the EMS is lost though, isn't it?

Thanks,
It would be nice to get the stock map as a ref and the work from there.

 

[homesea]

ORIGINAL: edh

ORIGINAL: homesea

Not sure about the 2.7 but the 2.5 in '88 had lower compression then the earlyer cars the same as a US spec motor. So you might find the maps are the same.

Love to see how pans out, about time someone did this to a Lux.

are you sure? - I thought it was still quoted at 163bhp

110% If its the 2.5 with auto tensioner and oil level sensor in the sump it is less power and torque due to lower compression.

 

[Fen]

ORIGINAL: JamesO

ORIGINAL: Fen

Well done for actually doing it!

Surely unless you get a custom map for your car the main benefit of the EMS is lost though, isn't it?

Thanks,
It would be nice to get the stock map as a ref and the work from there.

Fair point, but assuming you're going to do the onward work on a dyno then the US map will be fine to get you there. Having mapped on the road I seriously would not recommend it both from a results point of view (I got close to 20% more power from a RR map) and a safety one.

 

[944 man]

ORIGINAL: JamesO

Just fitted Microsquirt as per a thread on rennlist (pre built megasquirt 2 in a small case). After a bit of messing around I have the car running and driving which is good.
I had to add an inlet temp sensor, I was hoping to use the one in the AFM, but it wouldn't work, all other sensors are as stock with the exception of the wideband o2 sensor to help tune the thing. Oh, and a manifold pressure sensor.
Cant play too much as my laptop is playing up which is annoying.

I have the North American timing map, does anybody know where I might find the European maps or if they are much different? I know they have a lower compression ratio on their 944 lux's

James: would you be able to explain in a little more detail what was involved please? Ive spent hours searching but I havent managed to find one thread that actually explains what adaptions were made in order to make the car run properly (although I read scores of 20+ page threads waffling about doing it and showing pictures of new MSs on peoples desks...).

Simon

 

[JamesO]

Have a look here :-http://forums.rennlist.com/rennforums/924-931-944-951-968-forum/424355-microsquirt It has the information needed.
Also google Frwilk, the dme pinouts are there.
I picked up the microsquirt last summer from the states when the pound was strong (cheap), wired it to an old ecu plug as the thread shows and left it in a draw until last weekend.
I cant comment on tuning/how good it is etc as i have laptop issues

 

[barks944]

Email FR wilk. Ive sent him a few emails here and there and hes pretty helpfull.

 

[944 man]

He told me that it is possible to retrieve the standard values from the DME, but didnt explain how.....

 

[barks944]

I assume you would need a copy of the code on the DME, then if you knew where the timing maps were you could read the values. You would need a chip reader for this, they arent expensive.

 

[JamesO]

Thanks, sounds like extra ultimately unwanted grief.
Have ordered a different serial port converter as the usb one seems to be the source of my laptop trouble. I can currently read and write data ok but not when the engines running.

 

[944 man]

http://forums.rennlist.com/rennforums/924-931-944-951-968-forum/424355-microsquirt

ORIGINAL: JamesO

Have a look here :-http://forums.rennlist.com/rennforums/924-931-944-951-968-forum/424355-microsquirt It has the information needed.
Also google Frwilk, the dme pinouts are there.
I picked up the microsquirt last summer from the states when the pound was strong (cheap), wired it to an old ecu plug as the thread shows and left it in a draw until last weekend.
I cant comment on tuning/how good it is etc as i have laptop issues

That only brings back a 'page not found' error unfortunately.

 

[944 man]

http://forums.rennlist.com/rennforums/924-931-944-951-968-forum/424355-microsquirt-stand-alone-ecu-installation-guide.html

 

[barks944]

Anyone know if you can get the microsquirt in the uk?

Ive been thinking about getting a chip reader for the 944 dme for a while. Ive got a spare DME I could read the code from too.

 

[edh]

ORIGINAL: homesea

ORIGINAL: edh

ORIGINAL: homesea

Not sure about the 2.7 but the 2.5 in '88 had lower compression then the earlyer cars the same as a US spec motor. So you might find the maps are the same.

Love to see how pans out, about time someone did this to a Lux.

are you sure? - I thought it was still quoted at 163bhp

110% If its the 2.5 with auto tensioner and oil level sensor in the sump it is less power and torque due to lower compression.

Funny that - the -88 924S was quoted at 160bhp - up from 150 for the '86 and '87 because they had increased compression in the '88 motor, supposedly bringing it in line with the 944

 

[JamesO]

As an update to this project, I now have a better serial port adapter (pcmcia rather than usb) so can now play with the system properly.
I have 2 problems
1. can't rev past 4200 rpm, apparently I need to change a diode in the microsquirt to a higher rating, not surprised really as the vr sensor that reads the teeth on the flywheel creates enough voltage to give a nasty shock it would seem!

2. Dash rev counter won't play with the output from the microsquirt.
I'm currently using the rev counter thats built into the wideband gauge but having a look around the web I think I've found a circuit to fix this on a vw forum so hopefully a fairly easy fix.

 

[944 man]

Are you using the oem sensor which is picking up on the original flywheel 'markings'?

 

[JamesO]

Yes stock flywheel and sensors, it would be much easier with a s2 flywheel as it only has 60 teeth.