Quote:
Originally Posted by Stephen12ZL1
they are worth 10-15 hp tops with no cats. They are definitely not worth 30-40 hp as many vendors claim. I have dyno sheets to prove it.
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I agree with this, but as the power starts to climb 500, 550, 600 they become even more restrictive.
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2017 ZL1 A10: 8.84 @ 156 PB
2017 ZL1 A10: Previously FBO 756/761 (9.6 @ 143 1/4)
SOLD-2013 ZL1 M6:BTR,LTs,IDs,ATI,RotoFab10.84@129
SOLD-2011 SS M6: Blower, Cam, Alky, LTs.
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