grandprix00

Yeah i have a 2000 grand prix gt with a chip on it and i had it up to 130 and i put a trottle boddie spacer on and now its barrel makes it up to 124 what do u think could be wroung do i have to adjust something

richtazz

Your intake is air only, so unless the spacer is an adaptor for a larger throttle body, there is no performance advantage to a spacer on this application. Did you do any other mods when you installed the spacer (remove the MAF screen, relocate the MAF, etc...)?

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grandprix00

I had to remove a sensor but i put it back on idk if feels like its gutless now? idk

BNaylor

What sensor was originally removed? And what chip mod?

A throttle body spacer does little or nothing to improve performance on a normally aspirated 3800. On a L67 Supercharged 3800 it helps reduce knock retard when we go to smaller pulley sizes. It accomplishes this by helping to isolate the throttle body from the hot intake which is the supercharger itself. The supercharger gets much hotter than your plastic UIM plenum. Also, the spacer seals off coolant from flowing from the intake to the throttle body. The coolant improves driveability by helping preheat the throttle body.

If you had better performance without the spacer then you might consider removing it and then see if performance is regained.

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'08 Pontiac Grand Prix GXP (Dark Slate Metallic) - LS4 5.3L V8
'08 Pontiac Grand Prix GXP (Liquid Silver 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
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grandprix00

alright ill try that thanks alot