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Old 09-11-2020, 03:19 PM   #2
ChongChong
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Member#: 493104
Join Date: Oct 2018
Chapter/Region: Tri-State
Location: PA
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Catbacks generally do not add much power-if at all. You can attribute these horsepower gains to testing variables such as dyno, location, etc. Most power gains will come from a
less restrictive downpipe because this is where most of the exhaust restrictions on these cars are.
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