p7x

dyno?

Nuclear

The noise is still there and hasn't change since my last post

Nuclear

I waiting for a day off then i'll go

bigworm

two months later.... dyno?

Nuclear

gained 7 hp, sorry for the delay, my dyno before the downpipe was 249, and after was 256hp

Zooomer

iTrader: (1)

We've been selling a lot of downpipes. I'm just curious if everyone has the noise or not? We did have a few shipped out with double braided flex that failed and we had to replace them. I'm wondering if people with problems have those??

A few weeks ago we switched to interlock flex pieces and I believe the pipes are quieter. Anyone running them care to chime in?

Nuclear

I can still hear mine, not as loud as before but still there, i notice it alot more with the windows closed the noise shoots right through the firewall!

zinner

Mine is louder, but it's not terrible and I don't mind. My exhaust was already loud.

Considering my 3 inch exhaust leaked with my stock cat pipe it's an improvement.

Nuclear

i'm curious to see if i have one of the ones that failed

AlphaJaguar5

I just bought one so I hope it has the fixed problem. Or else no STICKER!!! lol

bigworm

Will you be RMA'ing the pipes that are making this noise or sending out replacement weldable flex sections?

Zooomer

iTrader: (1)

We will replace the entire downpipe for anyone with a failed flex section.

what type of noise are the car's with issues making? Anyone with a pipe purchased in the last month making noise?

bigworm

Zoomer, sent you a PM

blown06

Have a question i currently have 3" catback and eventually going to do header. I am going with 3" downpipe and can not decide to go with cat or no cat I do not want to ruin the sound that it has right now any suggestions far as the difference in sound between cat/nocat and power wise thanks

bigworm

if cost is an issue, no cat. otherwise get the cat. despite everyone's complains, you wont notice a difference in preformance, just sound. However, with a cat and those huge 3" pipes you might actually be helping your low-end toque by keeping it.

thing to keep in mind, no-one ever complains about having a free-flowing exhaust that isnt loud enough...

Boost Fr33k

dang, i was thinking of getting a downpipe from zzp but all im hearing is about this whistle noise, intense has one too any1 got it?

SSMOKEM

Just got my ZZP header/downpipE installed, and no whine or whistling noise? Does sound great with the GMMP Performance exhaust though!

spaz

mine is super noisey whishing wistle noise burried in the exhaust noise I think it is the flex part. I don'tknow what version of the dp I have is there any way to tell the diff?

SSMOKEM

The only differences are in size and cat. Mine is a 2.5 with no cat. Still no whistling noise or wishing noise. It sounds great though, and I have a cel light because I lack a cat.