I'm curious as to why Procharger lists the horsepower gains for the 350z at 55% to 60% and the G35 at only 45% to 50%.

Seems like I smell BS, but I could be wrong. What do I know? (Not much apparently)

 

They put a 5 PSI pulley for the G35 kit and a 7 PSI pulley for the 350Z kit.

- Don't argue with idiots. They will bring you down to their level and beat you with experience.=P-

 

no, actually according to the ati tech i talked with them last
week, both kits are shipping with the same pulleys. I had
them double check my part numbers. they blamed it on g's
ecu. i think it maybe that but mostly the restrictive inline
air filter which the z's don't have. i plan on replacing that
asap and see if my boost levels go up...

03 G35C auto nav, alum. pedals, grounding kit, ultralight battery, Z tube (x), crawford plenum, RT cats, borla, ATI Procharger!

 

If you can get a PSI differential when measured before and after the air filter under boost @ WOT, then that would certainly be the main reason for softer claims with the G kit. If the filter is really as restrictive as it sounds it may actually drop 2psi or more. If this all really is the case , it reinforces my thoughts that ATI cheesed out on the G-kit, and should resolve the filter placement and other plumbing issues (ie. crankcase breather inlet)..