Originally Posted by Sukhoi
I'm considering coring a 93' blower (exchange for rebuilt 94/95) and transplanting onto a 93' platform., and install the larger throttle body and associated MAF. DrJay has indicated this is not difficult. Known issues so far:
- higher blower flange, making it a little more difficult to properly seat fuel rail
- larger EGR hole
- requires 94/95 throttle body MAF to achieve the HP gains
Any tidbits you care to share Bill would be appreciated. I do require the throttle body I.D. to ensure units I am looking at are indeed 94'+ vintage (unless the GM PN is cast/stamped into the body itself).
Higher blower flange? No. No problems with the fuel rail.
Larger EGR hole needs to be sealed with a lead EGR type gasket (make your own).
The 94/95 TB MAF will not work without a Performance/custom PCM or AFC calibrator. I prefer NOT to use an AFC. Running lean on the top end can kill your motor. AFC'* are unreliable at times, and are not the true solution anyway.
There is also an uresolved issue regarding fuel pressure regulators. I can tell you that before you start, you better replace your fuel pump. The FPR issue should be resolved soon (there'* an odd difference that we can't quite figure out).
In addition, the Throttle Cable Bracket ends up VERY close to the throttle linkage. Not sure what to do about this one but bend the lip out of the way.
The only two cars that attempted this before me had troubles just getting the car to run. I didn't, but I did alot of prep work first, partly based on their previous experiences. My setup was quite a bit different to begin with though.