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Generation IV Internal Engine
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is it worth it????

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Old 05-13-2012, 08:56 PM   #1
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Default is it worth it????

just built a Ls3 416 i have done everything for the motor for hp as i can but changing out my 1 3/4 headers for 1 7/8, add a cutout, air lid slp one for 104 air lid, remove MAF, and a speed density tune from Speedinc and they promise me another 30rwhp... Is there any truth to this????
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Old 05-13-2012, 11:01 PM   #2
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they are promising 30whp with swapping headers, lid, and a speed density tune, or just the tune alone?
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Old 05-13-2012, 11:01 PM
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