help with my grand prix

[gpman58]

i have a 2003 grand prix se 3.1. it has some modds like slp loud mouth exhaust, k&n intake, msd pug wires ect.. i was wondering if anyone knows any quick and easy(mabey) upgrades i could do for some horsepower

[BNaylor]

Originally Posted by gpman58

i have a 2003 grand prix se 3.1. it has some modds like slp loud mouth exhaust, k&n intake, msd pug wires ect.. i was wondering if anyone knows any quick and easy(mabey) upgrades i could do for some horsepower

Here's three that I know work on a 3.4L but the 3.1 is similar so maybe it's applicable:

Underdrive crank pulley
Hi Flow CAT - Magnaflow or similar
Granatelli Calibrated MAF sensor - easiest but costs around $275.00.








Thrasher CAI, DHP v1.0 PCM, SLP Headers,
3.25 SC pulley, CAIT GMAF, 2.5 DP/Hi-Flow CAT,
u-bend delete, 160 TS, ZZP Stage 1 72mm TB,
TB spacer, MSD 8.5mm wires, Autolite 103,
Goodyear Gatorback Serp. & SC Belt,
Nitto NT555R Drag Radials
1/4 ET: 13.210 sec. @ 104.490 mph
0 - 60 ft: 1.945 sec.

[gpman58]

what about a throttle body

[BNaylor]

Originally Posted by gpman58

what about a throttle body

Why not! Up to a possible 10 hp.

I know RSM Racing has a 62mm TB available for the 3.1L. Approx. $240.00.









Thrasher CAI, DHP v1.0 PCM, SLP Headers,
3.25 SC pulley, CAIT GMAF, 2.5 DP/Hi-Flow CAT,
u-bend delete, 160 TS, ZZP Stage 1 72mm TB,
TB spacer, MSD 8.5mm wires, Autolite 103,
Goodyear Gatorback Serp. & SC Belt,
Nitto NT555R Drag Radials
1/4 ET: 13.210 sec. @ 104.490 mph
0 - 60 ft: 1.945 sec.