yesterday I finally ordered my zzp catless 3" downpipe.... what should be next on my list? only have a gms1 and how long will the cel stay off til i get a tune? and would the exhaust note be noticable?

 

Nitrous.

 

I threw my CEL for the cat right after i left the shop haha

 

You'll def notice a dif tone w/ the exhaust, I suggest gettin that gm stage eleventy billion like this guy got^^

 

I'd just spend the money that you would on a catback and get upper and lower CP'ing and a better tune

I think that catless dp to stock exhaust sounds just fine, I wish I did that in the first place lol

Call it a day after that

 

catless downpipe on stock exhaust is very buzzy... i'm going to be buying the modern performance straight 3" to try and deepen the tone a bit and make it burble a bit more...

 

lmao, installing GM stage Eleventy Billion is a real pita!

 

Yeah I think I'll be getting that aswell when it comes out

 

Not Buzzy on mine

ZZP Upper CP is a nice piece
ZZP or MPx Intercooler is a good upgrade
K&N SRI

Are you going to get a tune?

 

yep! Im leanin towards a trifecta tune. just want some cp, intake and an intercooler next