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Sound pretty good, but how efficient is the rest of the stock exhaust? How much does it hold you back in terms of power?
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2019 Ruby GT350 - Gen 5 Whipple on corn making 855RWHP.
Sold: 2018 F80 Part Deux /DCT /YMB /Full SS /CF Trim /ZCP /ZEC w/Black 666M
Sold: 2015 F80 /DCT /YMB /Full SS /CF Trim /ZEC /ZLP /HK /S&TVC- 18''///M
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