I have Hahn catted DP, love it

YouTube - ‪2010 Cobalt SS/TC with Hahn downpipe and stock exhaust‬‏

 

this is kinda how my car sounds with the muffler delete well ill try it with it first if its two loud i can always have the muffler welded back on thanks everyone you helped me alot in my decisions

 

I have an HHR SS w/ stage 1 and a cat back 3" magnaflow exhaust. what kinda power gain can I expect w/ out a tune for the DP?

 

Well, hahn catted dp looks like the best quality, but for $404, that is as much as a damn tune. I will be going for a zzp or mpx catted down-pipe, and i already did the muffler delete, which is only somewhat loud at cold start.
I came from hondas and acuras, so this car sounds like a purring kitten compared to the loud ass buzz that comes from acuras....lol

 

is the smell really obvious running catless?

 

Not really noticeable normally, though if you drop the hammer it definitely gets noticeable.

 

hmmmm because i already have a catless, just worried about the smell, and not sure if i want to install it or get rid of it

 

I say do it, I always worried about my dad smelling it when I crash there over night. He hasn't said a thing. hell I got pulled over and shut the car off, cop had no idea.

 

I just put on my Bad-Mab DP and I can't notice any smell that would be obvious to anyone that didn't know about the DP.

 

As posted before I can do that DP for like $120 shipped to your door. PM me if interested.

 

I went Hahn as well, with their MODpipe stuff.

I'm running catless/straight pipe right now, but with MODpipe, if I ever need to put the cat on, it's just loosening a couple clamps, and swapping out the straight and putting in the cat.

Shitton easier than unbolting the entire DP and finding the POS stocker over and over.

hrc2 working

 

yeah my main concern would be getting pulled over, and having a cop smelling it.. thanks for your input though man, i'm gonna put it on this weekend