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Discussion Starter #1 (Edited)
I just bought a srt8 challenger 2009 has 48,000 miles I'm wanting to make above 400 whp with pretty much bolt ins. Any suggestions?
 

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Intake, long tubes, cat back. Those will getcha started :)
 

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Discussion Starter #3
I'm wanting to make close to 450-470 all motor and then go supercharged but also idk which one to go pro charge or screw style
 

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First off, if you want to make 400whp, do the following:

Intake, exhaust, ported TB, 180tstat, custom tune

^^ That's what I'm running and the car made 405whp

Then if you want to make 450whp, do all the above + cam, long tube headers, and maybe worked heads.

And when it comes to superchargers it's more up to personal preference. I personally prefer Roots (screw) type SC's, simply because I love the whine. However, as I recall, centrifugal SC's will make a little more power.
 
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