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Old 11-16-2015, 09:30 PM   #1
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Gurgling with O/R Hpipe

Sup guys, ever since I installed the O/R H Pipe I hear gurgling or backfire when shifting from first until third. I used to get backfire only now I get a deep gurgle sound kinda. Its pretty cool to be honest. And also when letting go off the gas and letting it slow down but thats when going faster around 60 or 70mph.
Is that normal?

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Old 11-17-2015, 05:19 AM   #2
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Old 11-17-2015, 05:51 AM   #3
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Every single 3.7 mustang does this. It sounds like a quiet popping rumble with stock everything. With straight piped axle backs, it sounds like a carpet bombing is in progress when you lift off the throttle (neat, but completely lacks any form of subtlety, and is definitely ricerish in that the car gets stupidly loud, without going any faster). With long tubes and an OR x pipe with a stock cat back it will sound a bit like putting pocket change in a coffee can and shaking it around (inside the car, outside, really load crackling).
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Old 11-18-2015, 02:04 PM   #4
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Yes. You went from catted to off-road. It's normal.

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