[ROADNOTCA]

Originally Posted by MountainBlue

PCMforless.com is doing a tune now for $199

If you want the exhaust open you need to get rid of the crushed piping in the downpipe, before and after the cat. And the intake, the part that is restrictive is the pipe that goes into the wheel well, its like 1.25-1.5" , freakin terrible. With everything opened up, the H3 does have more punch, its just the AWD system saps A LOT of power. I've heard its like a 39% driveline loss from crank to wheels.

I installed PCMforless Sunday, lots of fun. Hows this idea; take off the front drive shaft for M-F driving. I haven't looked under there, but it seems like it would be the equivalent of shifting an old T-case into 2H, unload that ~39%. If anyone gets to this before I do, be sure to mark the orientation of the flange/u-joint so you can return the D-shaft to the original postion; its balanced (for 100 MPH?). GM tried this "full time 4WD" ~30 years ago on the K5.