My coworker has a 01 3800 n/a Grand Prix, He has made a spacer that will let him install a L67 TB on his L36 Engine, I think and have told him he is in for problems, he keeps saying will work without any problems. Now some of you tell why its not going to work without a tune, we have no one in our area that can performance tune that we can find. I have a stage 1 on my car and it was a plug and play deal. If any one knows of a tuner in Lower Alabama lets us know.


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First of all, the MAF tables aredifferent between the two, so the tune will be off there- and secondly, what is the point of putting on that much bigger of a TB, when the upper intake is much smaller?

I'm sure you can find someone with a PT or HPT in alabama, post up on clubgp, the PT forums, and the HPT forums and I'm positive that you'll find someone in driving distance.