Pontiac Grand Prix Forums : Grandprix

I am looking at getting an Intake and this pcm (PCM for Grand Prix GTP v1.0: 3800 Performance)

How much of a performance gain will I get from these two things? How tough of an install is the PCM? I really haven't seen anything else for a PCM other then this one. Is there anything better out there?

Thanks for the help.

The intake will give a few HP. The PCM doesn't really give HP as making it more accessible with better shift points, less restrictive torque management, and some better timing.

Not too bad.

Most vendors offer them. ZZP, WBS, 3800Perf, the old DHP, and a vendor here WillOverKill from Overkill Motorsports.

I'd say go with the Overkill.

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2004 Impala LS - got some mods sold!!!
2009 Subaru Impreza WRX STI

NAIOA moderator Still Imp'n, just in a different Imp.

All pcms are generic tunes. If you search around, you'll find that many have problem areas here and there in their specific files they use. I'd check and see with owners of a specific of the pcm you're planning to get and see what they think.

Also, I've heard a lot of good things about Will. I believe he will even help custom tailor the pcm based on scans.

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'00 Grand Prix SE - Pink
L67/4t64eHD Swap - XP - 105# - LS6 Retainers - 3.25" - Pacesetters - 180* Tstat - 1 3/8" Radiator - HiPo Tq*s - FP Rewire - Digital DIC Swap - Mis-matched GT bumpers - Black Headlights - PowrTuner

i say go with will from overkill . he will take care of you and you can send it back later as needed for more tuning . will also has a fender wall intake if he still has any left . check him out in the vendor section .

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1998 GTP , 3" down pipe w/cat , u-bend delete , full 3" exhaust w/ magnaflows , no resonator , powerslot front rotors , Overkill PCM , Overkill FWI , 180* t-stat , 1* colder plugs , alt. re-wire , alt. stage 1 booster . 215 whp and 238 torque .