bartSS

With adm you have 2 choices for a muffler. Either a magnaflow or the SW which I have. Mine gets loud as ****. Magnaflow is nice and mellow and so is the Hahn until u rip on it

oneton

How do all you catless pass the emiss. test. in your state? Even in florida with no state inspection some county's test.

sleeper

Yea, agreed, & If you ever get a roadside inspection check & have no Cat..

Could be $$$$$ & maybe a visit to the graybar hotel....

But I'm sure you guys have that all figured out..

HHRSSouth

After reading some comparisons last night on the cobalt ss/tc forums (reading zzp and cia actually going at each other). The only major difference I could see between the 2 was cia uses a metal core cat vs. zzp using a magnaflow core but with high dpi count, zzp owns the fastest LNF vehicle currently. I will probably go ZZP myself I just can't see paying more money for something identical minus the cat being different. Other then that, the quality looks identical from the welds to the material used through out the thing. Both look like great down pipes.

bartSS

Zzp definately makes some good stuff and at a great price. Their motto "go fast not broke" speaks for itself.

And as far as emissions go. I erased the code throught hp tuners because all they do here is plug you in through thr obd2 port

XXL

Why is L N F starred out? It shows up when I quote the message, but then stars it out when I post.

Neogenic

Is there any downside to using a hahn exhaust with another non-stock and nom-hahn downpipe. Also I thoyght hahn goes through steps so the sensor works with it and doesn't throw codes.

HHRSSouth

Was wondering the same, must be some kind of slang abbreviation also.

asanti

Exactly, if you saw the pics of my install, you'd see that the O2 is set to enter at a slight angle instead of at a 90* angle to the exhaust stream. It honestly doesn't really look like it enters the exhaust stream. That's why you won't get a CEL with the Hahn DP of your choice.

Allex

HHRSSouth

As far as I know CIA and ZZP also use the angled O2 to prevent CEL's, Hahn may have originally made it that way, but thank god for borrowed ideas to give us more choices and vendors to compete with each other or we would be paying 500 for a down pipe