I found where the noise is on mine it just doesn't sound like a leak it is one! The top bolt from the exhaust maniflod to the pipe has exhaust gas all over it and the gasket is falling apart(only on the top) So any with this downpipe might want to check! The downpipe was install by my dealer and check for leaks and then re-check by an exhaust shop a week later with no leaks. I will be going to ZZP for anwsers!

 

sounds like a bad design. not the correct angle.

 

Or the flexible section is too stiff, i'm going to try and tighten it up tomorrow

 

our maybe that thin 5/8" flang is done already.

 

Do you mean 5/16" because 5/8" is really fing thick.

 

Hmm, I'll have to check mine out.. havent put it on the lift since the install.

 

I'll check mine tommorow.

 

yah something aint right there, let us know what you find out.

 

yeah i ment 3/8"

 

i was going to get that downpipe to match my header. did you find anything out?

 

I just checked the bolt where the leak was and i got 1 and a 1/2 turns on the bolt and it doesn't seem to be leaking now, but i will have to replace the gasket when i got time

 

dont you mean "doesnt seem to be leaking"?

 

thats right, i fixed the post

 

sorry i wasnt trying to be a smartass earlier but yah it seems to me that you found what was wrong with the downpipe and hopefully it will quit making the whistleing noise.

 

from what I've heard so far about the whistling sound, it's from the flex joint. It needs to build up some carbon first. Either that or spray it with high temp paint on the inside first.

 

sorry to get off topic here, but how is everyone liking the zzp downpipe? Is it worth the money, and what kind of gains are you getting?

 

No worries and the whistling noise is alot better now

 

what do you mean by alot better, do you mean its louder or it went away, sorry ur post kinda confused me lol

 

How did you end up fixing it?

 

I used muffler cement around the flange the noise is barly noticable now