Boosted Z31 is your IC to TB pipe 2 as well?..or is it just the turbo to IC pipe that is 2?

2 from the IC to the TB is too small. You could benefit greatly by increasing the size of your cold IC pipe to at least 2.5 especially with a V6 and large T61 turbo!

The 2.5 cold pipe acts as a plenum extension. You might want to try 2.5 piping on the cold side if you have not done so already.

Chismoe the car will be done in about a month. I am still prepping the car for the swap. I have already installed the turbo timer boost conroller gauges intercooler battery relocated etc...I am working on some of the intercooler piping and test pipe right now. As soon as that is done I will clean the engine replace the rod bearings gaskets and seals and drop that bad boy in.

Stay tuned....


Peace out