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Old 05-07-2010, 10:18 AM   #22
99-LS1-SS
Waiting...
 
Drives: 2009 G8 GXP M6
Join Date: Jun 2008
Location: Jamestown NC
Posts: 275
Sorry for being so vague.

Currently I'm at 6.5 lbs of boost and I would estimate my power to be around 500 rwhp maybe a hair below that. I haven't had it dyno'd yet so I don't know for sure. My commanded AFR is 11.4 at WOT and I'm within 3% (on the rich side) throughout a long third gear pull.

I'm currently running a 3.7" pulley with 1:1 ratio in the rear pulleys. I'm considering going down to a 3.4" or 3.5" pulley. A salesman at Magnuson claimed that each tenth of an inch reduction in pulley size is equal to a half a pound of boost. Based on that statement I would be around 8-8.5 lbs of boost.

I have an adjustable regulator set at 58 psi of line pressure. The regulator is in the trunk. I've hooked a pressure gauge up to the rail and it's got 58 psi at WOT at the rail too.

Thanks for any input and/or advice. I'm trying to learn all I can.
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SOLD 2009 Maverick Silver G8 GXP M6
Engine Mods: TVS 2300 Magnacharger 6.5lbs, ARH 1 7/8" long tubes with catted x-pipe Roto-Fab Intake, Custom Fuel System, Tuned by Me
Drivetrain Mods: Stage 4 Monster Clutch, GForce 300M Race Axles
Suspension Mods: Pedders/Wretched basic drag pack - BMR trailing arms and toe rods
Misc Mods: Jamesbiz Catch can - GRRRR8 Heater hose relo kit
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