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2001 sunfire gtp



with headers s1x and 91/93 octane you'll be around a 3.2... I would have a bigger pulley to start with/try out first to get the tune dialed in.
 


yeah i found out i already have a plog on my car so no need for headers, i need to find a garage around that can tune for me, and i need a way to read kr before i drop too
 
.... I would do headers. Plog and rear manifold will not flow as good as headers. If you want to get into the 3.0 to 3.2 range, you'll want headers. plus they're cheap. might need a bit of modifying to fit in the sunfire tho I'm not sure.
 




looks like my front is a plog, but idk what stock manis on these motors look like, both pistons at the centres that popped, #4 and #3
 
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