I am interested in a catless DP on a group buy over on the cobalt forum but some have said they aren't the same. I thought the Cobalt DP is the same for the 5sp HHR, is this incorrect?

Here is the one I am looking at getting:
http://bad-mab.com/lnfdp.htm

 

Yeah cobalt downpipes are interchangeable with the hhr

 

Nice, thanks!!

 

So anybody w/ a catless DP, any issues w/ CEL when using a defouler?

This is what I was going to use.

 

The defouler does not guarantee a cel will not appear. I know this because mine has and it uses a defouler j-pipe. Install an aeroforce and you can clear the cel.

http://www.modernperformance.com/aer...lt-p-1848.html

Plus it can monitor everything you need and don't need. I highly recommend this gauge to anyone who mods their cobalt/HHR. If you need any help with the install you can PM me or google it. However it should only take 10 mins or so to install it.

 

get a hahn dp and you won't have a CEL. from day one(been about 2.5 years) i have yet to throw a cel because of my dp/exhaust...i have no cats.

 

The Hahn DP is crazy expensive though.

 

i remember paying almost $400. considering the quality and the hassle free worries,to me,that's worth the extra $100-$200 for such an important power adder.

 

just looked and modern has the hahn's for $324. as for as the dp you are looking at,well you get what you pay for. $135 sounds like a steal,but i wouldn't/don't trust it. no a rep for hahn,just saying...

 

I figured for $130 I can't loose, I guess worse case is I get a code and I have to put the stock DP back on. There are quite a few guys running them on Cobalts with no issues.