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Discussion Starter #1
I recently picked up an 03 duramax shortbed ext cab and i put a 5in diamond eye turbo back exhaust afe proguard 7 intake and a PPE tuner. On level 5 i made 347HP and 661 ft/lbs....my next mod is going to be a lift pump...the question is whats the difference between FASS and airdog i cant really seem to find anything that makes one better than the other
 

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Discussion Starter #3
and how do those numbers look for my mods....level 5 on the PPE is 220hp...obviously i know im not going to get the full 220 to the wheels or even close to that with a stock fuel system
 
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