29-01-15, 06:42 PM
On the Gen 1s, the EXUP gives you more torque low down by increasing backpressure. At a set RPM, the servo opens, and you get better exhaust flow for your power. 
The Deef's apprentice
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exup
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Re: exup - by noggythenog - 27-01-15, 09:27 PM
Re: exup - by noggythenog - 28-01-15, 08:16 PM
Re: exup - by bigbluebear - 29-01-15, 01:47 PM
Re: exup - by ChristoT - 29-01-15, 06:42 PM
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