using GM ems in a Porsche 944 turbo - Third Generation F-Body Message Boards

mark944 · 02-13-2005, 11:26 PM

Hi,

Im new here, but hope to get a lot of info from you guys.

I have a porsche 944 turbo that I will be running water injection on. The stock engine management is no longer good enough (for 25-30psi of boost) and I dont have any money to go standalone.

It was recommended to me that I might be able to convert the ecm and wiring harness from a turbo sunbird to fit my purpose, because they can be hacked to use a 3 bar map sensor. I was also told that thirdgen.org had many people who could answer specific questions.

First- What years/models had this GM749 engine management? Specifically if they are 4 cylinder models that are turbocharged.

Second- Can anyone post a link or something to where I can get info about this system? I want to see what sensors I will need to replace. Most importantly, what kind of crank sensor is used?

Third- If this is an inappropriate place to post these questions please let me know, and hopefully suggest a better place. I do not have a lot of experience with GM electronics, but I have done a lot of chip burning etc with my stock computer. I think this project is do-able, but I am aware it wont be plug and play at all.

Anyone have wiring diagrams or anything like that they could share with me?

Thanks for your time!

mark944 · 02-13-2005, 11:47 PM

Some more searching has revealed some controversy about using the 749 with big P&H injectors. I would be using 55lb injectors. From what I gathered this would be ok as long as I get the components from a turbo sunfire. Is this accurate? There were varying opinions.

NEEDAZ · 02-15-2005, 12:18 PM

Try the DIYProm forum, you'll have better luck over there.

mark944 · 02-15-2005, 04:50 PM

Done, thank you.

NEEDAZ · 02-16-2005, 08:11 PM

And BTW, Wellcome to the board.....