I have stock header and stock exhaust. I want to buy a catless DP but zzp dosent have anything but the 3" listed anymore. Who else can i buy one from(a trusted company) that isint gonna take my money and never ship the part.

Thanks ahead of time.

 

Why would you not want the 3'? And i would go Bad-Mab Header.

 

id love to have a 3" but im on a stock header and no one has the 2.5 listed n e more. ill check them out.

 

check the classifieds..prolly cheaper anyway

 

Cobalt & Ion ---> ZZ Performance

 

found that earlier. i only wanted the dp. looks like this is what im gonna have to buy tho. lol. n e 1 know how it sounds with h/dp with stock exhaust?

 

well im a base...doesnt sound bad but its pretty quiet for me

the stock DP takes A LOT of sound out

it will have more of a tinky sound with the header and DP

 

You can have stock header and ZZP 3" dp...

 

the stock cat back soungs great with a header and a catless dp clear image automotive makes probabaly the third best header out and ottp makes the second and zzp the first

 

How? Won't I havan exhaust leak from hell?

 

depends on how far you want your mods to go...no need for a 3" if you keep a stock header and dont pulley down at all

 

you can do this, its cheap and a good upgrade for what you are trying to do:
badmap header, zzp 3" catless down pipe with a 2.5 exit.

whats that cost roughly? about 300 something dollars all together?

 

^ that's what I'm gonna do. Sounds like a good idea n e way. Im already GMS2 and have an injen intake. I don't want n e thing too extreme. Lol.

 

Noope. I have stock header, ZZP 3" dp w/ 2.5" exit, and stock catback.
Oh, and no exhaust leaks.

 

how were the gains and ect. i heard with the header it opens the car up a lot @ higher speeds. but if the gains are minimal with the header i just want to buy the DP.

 

Well I have a fllowmaster muffler from the PO and it was super raspy at like 3.5k, and now it isn't raspy until like 6k.. which is my favorite thing about it b/c i had to shift so early in every gear.. As for gains, I'm not totally sure. I don't notice much horsepower wise, but my stock DP was clogged, so now I make boost A LOT faster. It is not any louder then my stock one either, which was also a big plus.

Hope this helps.


Oh and some tips before you start installing a new one..... Get some wd40 and cake the **** out of ALL the bolts and studs, and you might as well go to the hardware store and spend about $10-$15 on new hardware.

 

I think I've decided to buy the h/dp combo from zzp. But I need the rear O2 bung. If I have the extra bung added for a wideband can I stick my O2 and it and avoid a CEL? Or will it even reach? Thanks.

 

my rear o2 sensor didnt reach on my downpipe so i just zip tied it up lol.

 

3" downpipe for the LSJ is best if you are going aftermarket. 2.5" is smaller than the stock downpipe. Purchase a 3" ZZP downpipe with bolt in 2.5" option. This way it will bolt up to the stock or aftermarket 2.5" catback.

 

I have a catted down pipe and a header for sale in the classified section. It is a vibrant header and down pipe with a summit high flow cat. Sounded great on my car. Pm me and we can work out a deal.

If not I do know zzp makes good products and they also sound good too