Helix Test Pipes
#1
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Helix Test Pipes
Installed test pipes w/ Borla exhaust today and now experience noise from 1/2 to full throttle. Sounds like a soleniod venting. Also have the same noise when de-excellerating at higher RPM. Almost sounds like a pop-off valve from a turbo (but don't have the turbo). Anybody have a clue what this could be???
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I'm running the Helix pipes with a JIC y-pipe and stock exhaust system and am experiencing the same type of 'hissing' noise. It's most notable when I lift my foot off the throttle (kind of like on a BOV).
I noticed it right after I had the test pipes installed but it wasn't that loud. However, once the y-pipe was installed, it sort of amplified the noise.
I've gone back to have it checked out and the techs assure me that it isn't leaking but what else could it be? It seems like it has to be some type of leak.
I noticed it right after I had the test pipes installed but it wasn't that loud. However, once the y-pipe was installed, it sort of amplified the noise.
I've gone back to have it checked out and the techs assure me that it isn't leaking but what else could it be? It seems like it has to be some type of leak.
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I really doubt it's the Helix's because other have installed those without weird noises. IIRC, there are other posts about the JIC not sealing properly and the Borla comes in 900 pieces, which makes it hard to avoid leaks.
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Yeah, but the noises were present before the y-pipe was installed so there's something strange going on. Also, I got my y-pipe at Superautobacs and the kids that work in the service dept. find it quite hard to believe that JIC would ever make a defective y-pipe; whatever that's supposed to mean. They literally laughed at me when I suggested that perhaps the flange couuld have been off from the (JIC) factory. They said if anything's defective, it's gotta be the stock exhaust system which I've gotta say is probably a boatload of crap...
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its very hard to determine what your problem is
i had an exhaust leak with my injen and you only hear it when you step on the gas..not let off
since everyone that has test pipes seems to be agreeing on this sound its pretty fair to assume that not ALL of us have leaks..i think when anyone puts on test pipes the and you take your foot off the gas it kinda sounds like a planes engine...which is a good thing cause its a cool sound especially if thats the sound its SUPPOSED to make
even if that doesnt make sense to anyone its still fair to say that you will hear an exhaust leak when you push hard on the gas not let off
an exhaust leak sounds like a "hissing" sound....the sound you described sounds more like what its "supposed to be"
the best way to test for a leak without jacking the car up....is getting into a higher gear (say 5th) and bring it down to the lowest mph at that gear....then step on the gas hard....if you hear a distinct hissing noise then its prob a leak
i had an exhaust leak with my injen and you only hear it when you step on the gas..not let off
since everyone that has test pipes seems to be agreeing on this sound its pretty fair to assume that not ALL of us have leaks..i think when anyone puts on test pipes the and you take your foot off the gas it kinda sounds like a planes engine...which is a good thing cause its a cool sound especially if thats the sound its SUPPOSED to make
even if that doesnt make sense to anyone its still fair to say that you will hear an exhaust leak when you push hard on the gas not let off
an exhaust leak sounds like a "hissing" sound....the sound you described sounds more like what its "supposed to be"
the best way to test for a leak without jacking the car up....is getting into a higher gear (say 5th) and bring it down to the lowest mph at that gear....then step on the gas hard....if you hear a distinct hissing noise then its prob a leak
#15
I don't know if this is what you are talking about, but a problem my friend had on his WRX when he got a new uppipe and downpipe was that the new uppipe used a different grade of metal so it expanded and contracted at a different rate than all the other metal in the exhaust so it started to sound super crappy at high RPMs.
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Exhuast Smell
I have the INJEN SES(angled) w/ Helix test pipe set-up. Ever since i installed the Helix TP, i've had a super strong gasoine/petroleum smell. Is it normal for this to happen w/ test pipes? Don't think i have a leak since i hear of no hissing sound.
Thanks.
Thanks.