thought id share my current problem with everyone, if you had any ideas to help me out would be appreciated. copy pasted below:
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Well, I've had my car off the road for 2 weeks now, basically all of which have been spent at my tuner's shop. The problem:
Start her up and will immediatley run very rough, rpm jumping up and down, missing etc. Leave for about 5 minutes and it will idle smoothly instantaneously, or take for a drive and about 5-10 minutes of driving it will act more normal in terms of idle. BUT then it doesnt have any power under load. It becomes flat, you can hear the turbo spool and a rush of air, but goes no where.
What has been done:
He has replaced all engine sensors, AFM, CAS had it on the dyno. Fuel pump, lins, filter all checked as well and cleaned. It is running lean... very lean, so lean the engine doesnt have enough fuel to operate properly, this is occuring on all cylinders.
Higher temperatures seem to make it better, the longer you run the car for the better it gets, but never close to perfect. He had determind that the problem has to lie either with the ECU, or the wiring into it. He is supremely confident that an after market computer will fix this problem. I have access to R32 ECU and loom, and hence this should also fix the problem, once wired up correctly. I need second, third etc opinions though before i go ahead and spend money, hence this post.
I have just recently had the entire intake side off, inlet butterflies remove and sealed up good and propper. exhuast manifold has been ripped off, studs replaced and put back on with the addition of an r33 turbo. Amoutn other things and a full service. Was running fine until about 4-5 days after, then it got progressivly to ths state. It did this before i had this work done, but on a VERY small level, and 10 minutes of driving would see if going perfectly.