MyE28.com

I picked up three e28's recently for $1800, two 83's and one 84, they all have their problems and shortcomings, but are all there. The wife likes the body style so she chose the only one of the three that is an auto, which also happens to be the only 533i, the other are just 528e 5 spds. The 533i will get a mild restoration and engine rebuild to make it a safe reliable daily. One of the 528e's had an engine fire and i sourced parts from the other with a blown head gasket, wiring and such that was damaged in the fire, but is currently running well. Im going to attempt to sell this one to cover the expense of what i spent on all three and hopefully come out ahead somewhat this way. That basically leaves me with a 84 528e thats missing the top end and engine harness off of it but is otherwise all complete. I have posted about wanting to do the e to i conversion as I have a spare 325i motor left over from one of my sons projects cars and is complete with harness and computer. I've done some research and am having a hard time finding a wiring diagram of how to integrate the late model e30 round connector plug to the early E28's square fuse box plug. this will be a daily to save me the high price of driving a diesel dually daily, lol. later it might spiral into something more purpose built, but right now i want to keep it basic so it doesn't become like my other project cars that get shelved due to lack of money to build it the way i want. Basically, its going to run the stock DME, airflow meter, new pump and boost dependent regulator, small intercooler, 24 or 30 lbs injectors, ARP studs, stock head gasket, as my compression ratio should already be low enough due to the E to I head swap. I welcome all feedback and constructive criticism, help is always appreciated!

....also when running the stock Air flow meter, since it is the flap door type, i have to route the blow off valve back into the suction pipe so the AFM doesnt detect a vacume leak, correct? .....or can I run it open to atmosphere?

You must put back into piping pre-turbo, but post AFM.

The M1.3 faq/B35 swap faq should have wiring detail for you and the round connector, but if you are using e30, you may have to find it off the ETK or r3v forums.

Thanks for the help, much appreciated! would you happen to know where i can get some wiring info on converting from MAF to AFM?

5150ct wrote:Thanks for the help, much appreciated! would you happen to know where i can get some wiring info on converting from MAF to AFM?

You don't want to do this. Little to no gains. Makes tuning more difficult.

ok, thanks, i thought it would work better to control incoming airflow better using more modern technology.