exhaust making a turbo noise

ff_drift_lol

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what the hell's going on? it never used to do it. now when i downshift sometimes it makes a little blowoff valve noise and when i get on it it sounds like a turbo. it's 2.5 pre bent pieces mig welded no leaks that i know of full boar 2.5 chambered muffler and an apexi n1 muffler on the end. the last bend is just a sharp turn, i cut the pipe on an angle to angle the exhaust at the end afterwards. maybe it's that? i can't figure out where it's coming from :(
 

YelloEye

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what the hell's going on? it never used to do it. now when i downshift sometimes it makes a little blowoff valve noise and when i get on it it sounds like a turbo. it's 2.5 pre bent pieces mig welded no leaks that i know of full boar 2.5 chambered muffler and an apexi n1 muffler on the end. the last bend is just a sharp turn, i cut the pipe on an angle to angle the exhaust at the end afterwards. maybe it's that? i can't figure out where it's coming from :(

Now thats odd.....shouldnt make that noise when you downshift...hell I dont even know lol
 

They call me godly

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Well my 2500 HD does that, but its a turbo the size of a baby haha, IDK why this would be doing it. Call scooby and the gang maybe they can figure it out? haha
 

YelloEye

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what the hell's going on? it never used to do it. now when i downshift sometimes it makes a little blowoff valve noise and when i get on it it sounds like a turbo. it's 2.5 pre bent pieces mig welded no leaks that i know of full boar 2.5 chambered muffler and an apexi n1 muffler on the end. the last bend is just a sharp turn, i cut the pipe on an angle to angle the exhaust at the end afterwards. maybe it's that? i can't figure out where it's coming from :(

Did you recently change the exhaust and it started doing it or is there something else you changed recently?
 

ff_drift_lol

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it just started doing it randomly. you think a leak might cause this? i stood behind the car and had a friend rev it it sounds exactly like a turbo. it did it once when i downshifted from the afterburn it would normally pop or gurgle but this time it made a chirp like a blowoff valve. didn't do it for a week or so then it started doing it again. now it's all the time.
 

ls1fbody

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maybe a piece of your cat broke off and is wedged in a funny way?
 

ff_drift_lol

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catlesssss. it kinda does sound like a leak now that i think of it. i had it on the lift last weekend and gave it a glance saw no carbon or any kind of black spots on the outisde. i'll give a thourough check this weekend.
 

06ion2coup

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i you have a 2.2 and did the 2.4 swap it used to do that for mine too... its kinda badass and fun lol i miss that
 

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