Pinned the crank...still no change and only 3-4lbs boost. Suggestions? R/

 

pull the radix back off and check the intake port seals.

 

If the blower is good, crank pulley is pinned, no exhaust restricton and good compression on all cyls then the only thing that leaves is an intake restriction. Have you checked to see if there is a leaf on te MAF sensor? Another thing, maybe the Tb isn't opening up all the way for some reason. Pull the intake tube off and turn the ignition on and get a buddy to mash the gas peddle to the floor and see if the tb goes all the way open. If this doesn't work then crank it quickly with the intake tube off and floor it. It will throw a MAF code and screw the fuel mixture up but it shouldnt hurt anything if it was just done pretty quick. If you are running the stock air box then maybe something has gotten stuck in the inner fender where it pulls air in from like a rag or a dead cat::

 

I had the same thot about the TB and thats next. I have a ProCold on it and that and the MAF are fine. What if the MAF is bad? I guess that wud thro codes tho? I worry as this all occured afetr I got it back frm the dealer installing a tranny cooler...they were definately on it! Don't see any reason to pull the blower off again as we already had it off and back to Mag and its doing the same things as before. R/

 

Maybe a repost, but a bad gauge?

 

checked...and its good. R/

 

How did you check it? What method?

 

have you installed another gauge to make sure? I missed that suggestion

We have checked dame near everything, including the blower at this point. If you have not tried another gauge then do it, the autometers are Junk IMO.

 

I'll try it but don't think thats it as we dynoed it and was down to 285rwhp from 330rwhp. Here's what we've done so far:
replaced lower & upper valley seals, mid & rr blower gaskets, TB gasket, injestor o-rings, pinned crank, vaccum & compression tested. R/

 

not to hijack the thread, but Blown what gauges woudl you suggest if Autometer are junk??