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#2
10-10-2006, 01:05 PM
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Re: gov
The speed limiting is contained/controlled by the PCM module. You will need a Powertuner to remove the speed limitation or just get a re-programmed PCM module. Companies are ZZP, DHP or Intense available at any hp web site for Grand Prixs. Cost varies from $79 - $99.
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'08 Pontiac Grand Prix GXP (Dark Slate Metallic) - LS4 5.3L V8 '02 Oldsmobile Alero GL2 - LA1 3400 V6 '99 Buick Regal LS - L36 Series II 3800 V6 '03 Honda CR250R MX - 2 Stroke 250cc '97 Pontiac Grand Prix GTP - L67 Series II 3800 V6 Supercharged (Sold) Timeslip 08/12/06 AF Community Guidelines 
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#3
10-10-2006, 02:22 PM
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Re: gov
I though the pre-04s shut down at 107??? and even the 04' Gts shut down at 107, GTPs at 127, and comp-gs at 142...
but as bnaylor said a reprogrammed PCM or tuner can eliminate it easily...
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2004 Pontiac Grand Prix GTP Custom K&N Fenderwell Intake , 180° thermostat, 3" Down Pipe, High Flow Cat, DHP 1.0 PCM, 3.5" pulley, 1.9 Ratio Roller Rockers, 90# LS6 Valve Springs, AL104s, ZZP Motor Mounts, 17" American Eagle 192s, Magnaflow tips.  not just babies whine
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#4
10-10-2006, 02:41 PM
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Re: gov
That is a good point 04GTP. The Gen III GPs are the same as the Gen IVs. Speed limiting was based on the speed rating of the tires.
The other problem is even with a re-programmed PCM unless he has a HUD with a digital speedo he may still not know what his real top speed is or what it will ever be.
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'08 Pontiac Grand Prix GXP (Dark Slate Metallic) - LS4 5.3L V8 '02 Oldsmobile Alero GL2 - LA1 3400 V6 '99 Buick Regal LS - L36 Series II 3800 V6 '03 Honda CR250R MX - 2 Stroke 250cc '97 Pontiac Grand Prix GTP - L67 Series II 3800 V6 Supercharged (Sold) Timeslip 08/12/06 AF Community Guidelines
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