Looking for Help on this one guys!!
Trying to figure why 2 cars with similiar modifications have such a difference in boost. I will say the car in blue is a top swap on a GT while the car in red is a GTP.
My GTP Has new Wires beldon and plugs (104) thermo (180) SSAUTO Headers, Straight Pipe no cat? cleaned the MAF BBV is good, New fuel filter. No misfires..
Both cars have:
Headers, FWI, 3.4 Pulley. Long blocks are totally stock. We have about 13 degrees with the top swap car that has more compression and only 7 degrees of timing due to KR with the GTP. Trying to figure out why I have a 2 psi difference at 6K rpm's using the same pulley. For now we are going to do a 3.6 pulley and lower the boost on the GTP. Hopefully it will take some timing then. A/F's are both 11.5 on both cars.
Here is a link to the DYNO
Note: There are no cats on the GTP. The top swap car still has a cat.
The I am sure the hp difference is because of the timing difference.
What could caust the High boost and KR on My GTP?
Please advise.
