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#1
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Does anyone know the stock PSI on a GrandPrix GTP? I've looked all over the internet and I can't find a thing about it. Mostly I'm just curious but it would be nice to know. If anyone could find out that would be great. Thanks.
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#2
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7lbs is the stock boost. many peak at 7.5lbs depending on temps and elevation.
start modding it out, go with a smaller pulley and at minimum you'll jump to about 11lbs boost and can go higher. add a good intake though so it can breath. of course you'll jump on an exhaust too. even so, with just about $200 you can pull low 14's in the qtr real easy. I ran 14.667 bone stock!
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