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2015 ford fiesta se man.
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Discussion Starter · #1 ·
So, I installed a velocity stack where the airbox would normally go. I also intalled a cheap chrome tip on my exhaust tip. There are no leaks, but when I rev a little and let off the gas I get a burbble sound. It is kinda cool but is it normal? Also, with practicaly no air restriction, should I do a dyno tune to gain a few ponies? How would it cost?Small acceleration, Small revs
 
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