I have hade my y-pipe on for a couple of months and it started making some wierd gergling noises. THe y-pipe is the only part of the exhaust that I have replaced, so I thought it was supposed to be pretty quiet.
This noise happens usually when I down shift and the engine is reving down between 1-2k RPM, and is most prominent when rolling around low in 1st gear. I suspect that there is an exhaust leak around the header, but I have not had the time to get under there.

Any Suggestions?

Thanks,
Ted

 

Does it almost, kind of, sort of, sound like a blow off valve? PSSHHHT
?

 

i think he is talkin about how when u are comin to a stop and the engine is revving down (5 speed) right around 1.5k the exhaust tone sorta breaks up and goes silent, and i hope its normal cuz mine does that, i think it has to do with the exhaust being high flow now and since at those rpms there rilly isnt a constant stream of exhaust it has too much room to work with, so yea im guessin its normal.

 

its normal, don't you love downshifting with the aftermarket ypipe, i feel like i am driving a V8 Monster.

 

Well its not that it gets quiet, but that it goes from the normal down rev sound to a gergling/popping noise, almost like it's back firing.
I have to get under the car to see if something is leaking or broken. I will try to get the car off the ground tomarrow and take a closer look.
It also makes this noise when it idles high when I first start it up. I seems louder than normal.
Ted

 

thats what i meant it gurgles, but my car does back fire between the 1-2 shift and sometimes 2-3,

 

Mine was doing this on my WSP non mandrel, the reason I say was is because the flex section was shot, therefore extra exhaust was leaking out between the flex and where it connects. It was shot because I was running without a hanger until I could get a replacement for my old crappy one, but I wasn't able to get it soon enough. Now my car sounds like it should with the y-pipe.