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Discussion Starter #1
what are the differences between the hpp3, and the jet power control modual? performance, reliability, ect, again this will be for a 2002 xtreme 4.3l. Also jet puts out a throttlebody spacer, is this a worthwhile mod. thanks
 

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Discussion Starter #3
can anybody else give me some more info on wheather the hpp11 or jet modual is better? I heard that if you have headers, and an s/c it does not account for that. info please
 
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