Turbo Power

[88e30]

I recently had a turbo installed on my 88 325i, but it's not running correctly. I have a exhaust manifold and a turbo unit from a 524td. When i'm under hard acceleration at around 3 or 4000rpm the car starts to sputter. When the turbo starts to kick in under hard acceleration it gives several small jerks, so I can't really use the new power, can someone help me, my mechanic is going through some personal problems so he's out of commision. If you need to know more about what has been done to my car or if I didn't make my self clear please ask. Help please!!

[e36_m3_Turbo]

bigger injectors is what you need

[Fox]

you need bigger injectors for one thing. Also Im pretty sure (using my own deductive logic) that you cant use the AFM. The turbo is creating a far greater vacuum than naturally aspirated, hence this happens.

Trigger 1. A normally aspirated m20 will open the AFM trap door at full throttle at mid RPM pull.

Trigger 2: A turbo m20 will open the AFM trap door at a far less strain on the engine, therefore at full throttle mototronic is and already has been sensing the trap door open the full time and cannot calculate any more fuel, therefor it is leaning out your engine, causing possible harm.

[BMWJNKY]

Originally posted by e36_m3_Turbo@Jun 4 2004, 11:17 PM
bigger injectors is what i think you need

Yeah, thats what I was thinking. It sounds like you are running out of fuel durring boost. Did you install a rising rate fuel pressure regulator? If not this will help but I don't think it will completly solve the problem. I would recomend you take your car to a shop that knows how to tune turbo cars and see what they say.