I installed ZZP's downpipe today and when in boost around 3k RPM's I get a buzzing/vibrating sound under the car by the shifter. I went back under the car and tightened the bolts more, but it didn't change anything. Is this an exhaust leak or anyone have this problem with their downpipes?

 

welcome to the zzp leaky dp club

 

Should I return it and buy another brand?

 

I get this noise too, sounds like a rasp. i thought it was the header, but i installed the header and zzp downpipe. How can you tell if its the dp?

 

Never had issues with my ZZP Downpipe.

 

Check if your downpipe is close to the heat shield. If it's a 1/4" or less to the heat shield it may just be vibrating against that. That's what my OTTP downpipe does.

 

Mine has been nothing but a problem, no leak though. I thought I had a leak at first because of the strange buzz exhaust sound, but I realized that LNF's just kinda make that sound.. I get CELs all the time. My bung seems to let water in, I have replaced 1 bad o2 sensor already.

Like I said in another post, ZZP needs to change their product description about no CELs because a lot of people have CELs. It seems to be a bigger problem on the high flow cat models.

 

I have had zero issues with 2 different ZZP downpipes on both an LE5 and an LNF.

Check engine light!?

OH ******* NOEZ ANYTHING BUT THAT.



What a joke.......

 

cute

 

Turn it off with HPTuners, or use a stock downpipe.

Problem solved.

 

Well see, I purchased a product that is advertised and touted to not cause CELs, but it does. So thats why I am a little bothered, not a big deal though. I am not whining about it, just a little annoyed.. I am not totally going to void my warranty with software, just to delete it. I could put another brand or the stocker back on, and sell the ZZP, but that is a joke in itself. What a pain in the ass. I'll probably just ignore it, check the codes occasionally, and hope I don't throw a real code someday. Your mockery is really annoying too, I am glad you are awesome. MUAHAHA oh hnooess not a cellll silly newbs

 

When you have more flow than the stock cats, it's going to throw the code



If the rear o2 sensor sees more air than it's programmed to...hmmmmmm

 

Ya think? Everyone said those bungs where suppose to work.. they tuck it away, seemed logical.

You are so awesome that you probably knew those were bullshit, ha you are too smart for that stuff.

God I am just damn stupid I should have know better, I has no commeen cents. Why don't you have CELS? My car must be way more pwerfuler than your car and move more air.

Don't advertise them as no CELs, when they do. K?

 

Why do people freak out over a code??



nubs.

Turn it off. Deal with it. Or don't run a aftermarket downpipe.

reduces the chance. not eliminates the chance.

 

Don't believe everything you read on the internet, and try to use some common sense

I know....I am asking a bit much for the average user on this forum and all...but....

 

Common cents?

I think those are called pennies.

 

wut? were?

 

 

Hai.

I love you.

No homo.

o.O

 

 

You guys are riding my ass, god damn. I don't care that much, I said I'll deal with it. I guess I'm not as leet as you. I don't know why everyone has to be an ass. I am only being a smart ass to dish it back.

Sorry I mentioned a CEL, now get back to the mans leaky dp problem..

 

Check the heat shield OP.

It's probably that.

ssilver, for you buddy:

http://www.google.com/products?q=hoo...N&hl=en&tab=wf

http://www.google.com/products?q=tam...N&hl=en&tab=wf

 

Was butthurt had?

I think so.

 

I cant tell what the hell it is either, im gonna check the heatshield tho cause that makes the most sense out of anything posted in this thread so far.

 

ZOMG.