Now ****ing what!
ugh i said twice i dont have a stock downpipe i have zzp's 2.5 dp and the sounds not coming from the cat i was under the car. i've have it on for a month. i would of thrown the code already im sure but i didn't so i assumed everything was good. Cause when I had the cel eliminator on, i got a code for that. so i took it off. or is there a such thing as a cat breaking in? would it take a month for that?
Last edited by slobalt08; Oct 25, 2010 at 03:59 PM.
Senior Member
Joined: 04-14-09
Posts: 1,257
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From: California
ugh i said twice i dont have a stock downpipe i have zzp's 2.5 dp and the sounds not coming from the cat i was under the car. i've have it on for a month. i would of thrown the code already im sure but i didn't so i assumed everything was good. Cause when I had the cel eliminator on, i got a code for that. so i took it off. or is there a such thing as a cat breaking in? would it take a month for that?
Junior Member
Joined: 05-04-10
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From: STL
If your hearing "pebbles or noise" in your downpipe, likely your cat is coming apart internally, it's no fault of your own AND guess what if your under I believe 80K miles it's covered under your EMISSIONS warranty and that is federally mandated and has it's own little column under warranty coverage in the back of the manual, so take it in to a reputable dealer and they will observe your cat efficiency and likely replace it free.
Junior Member
Joined: 03-07-09
Posts: 433
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From: Fredericksburg, VA
Ok, so it more than likely your cat, I have a friend with a Mercedes and the cat only makes noise when stopping, another with a new charger with slp exhaust these throwing the 420 code on bank 1. All cats can go bad, your best option is to call up zzp and see what their warranty is on the Downpipe and go from there
I use 93 octane. thats premium gas here, we don't have 91, just 87,89, and 93. Owners manual says to use premium gas aka 91 or 93