I'm only seeing 6-7 psi on the in-car gauge when WOT, with very brief spikes to 8psi.
A run-down of car's mods:
Gauge is a digital AEM unit.
Blower is 2.3L Whipple with the 9-psi 3.25" pulley.
Car has JLT 123mm CAI, ID1000 injectors, 2 catch cans also installed, and the small sections of the stock exhaust mid-pipe have been cut out and replaced with non-mandrel-bent 3" pipe. The resonators were also replaced with 3" pipe, and the car has 11-12 GT500 mufflers.
So why am I not seeing 9psi on the gauge?
Running a JDM tune, their answer is that the engine is using the air being pushed into it so it doesn't get built up in the lower manifold enough to create the pressure to read 9psi.
When I first got my tune/blower installed, running 275/40/18 tires, the car put down 591 rwhp on the dyno.
I recently went to a dyno day at the same shop, and with the new exhaust mid-pipe "mod" done and the new catch cans being the only changes, running 305/35/20 tires it put down 546 rwhp
The tuner did a quick datalog and said the car was running 20% lean at idle but looked OK otherwise.
The lean condition was thought to be from a slightly loose-fitting catch can connector on the driver side, the one going to the intake tube.
Where did my power and boost go?
A run-down of car's mods:
Gauge is a digital AEM unit.
Blower is 2.3L Whipple with the 9-psi 3.25" pulley.
Car has JLT 123mm CAI, ID1000 injectors, 2 catch cans also installed, and the small sections of the stock exhaust mid-pipe have been cut out and replaced with non-mandrel-bent 3" pipe. The resonators were also replaced with 3" pipe, and the car has 11-12 GT500 mufflers.
So why am I not seeing 9psi on the gauge?
Running a JDM tune, their answer is that the engine is using the air being pushed into it so it doesn't get built up in the lower manifold enough to create the pressure to read 9psi.
When I first got my tune/blower installed, running 275/40/18 tires, the car put down 591 rwhp on the dyno.
I recently went to a dyno day at the same shop, and with the new exhaust mid-pipe "mod" done and the new catch cans being the only changes, running 305/35/20 tires it put down 546 rwhp
The tuner did a quick datalog and said the car was running 20% lean at idle but looked OK otherwise.
The lean condition was thought to be from a slightly loose-fitting catch can connector on the driver side, the one going to the intake tube.
Where did my power and boost go?