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WK2 5.7
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Discussion Starter · #1 ·
Hi all! I have a 2011 5.7 with Gibson axle back. When I put the exhaust on I got the hemi fart between 1st and 2nd shift when giving it some gas. Recently I got a Diablo tuner, and have tried the 87, 91 and 93 octane tunes. With each tune, the higher the tune number, the more pronounced and longer the fart becomes, with the 91 and 93 also farting between 2nd and 3rd shifts. I’m running 93 octane gas. Does anyone know why the different tunes cause the farting to increase? Thanks!
 

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2015 WK2 Overland
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2,294 Posts
I would bet it is from the aggressive timing and the quick shifts for 1-2 and 2-3. The DSG equipped Volkswagens will fart between gears because of the fast gear changes.
 
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