[Sl1ckC4m4ro]

So i recently have been working on my camaro and i want to get the Borla Performance Headers, but i still want it to be "Legal" but all i care about is passing the emissions test i don't want to be taking it off and putting it back on every year, so i was wondering if anyone has any experience with this here to help me out.

Also i was wondering if anyone knows what the size of the Stock headers outlet is, Before connecting to the CAT?

I also hear that the 2nd CAT is just there to be there and doesn't do anything is this true?

[TJay74]

The only headers that will pass inspection and smog are shorty headers and to be honest they are not worth the time or effort.

If you go the long tube route you will not pas smog or inspection more than likely, plus every longtube header out there moves the primary cat which affects how fast the cat will light off.

As for your questions on the secondary cats, they are not monitored so you can remove them, but again depending on your state it can cause you to fail the visual inspection. GM used to make 2 versions of each vehicle, a 49 state that didnt use the secondary cat and the CA compliant version that has the secondary cat. GM also advertised a 5hp difference with the vehicles having the secondary cat being 5hp less than the other version.

The secondary cat does help in cleaning up the emissions but it is mainly there because the C.A.R.B. requires them to be in place and GM now only makes 1 model that is 50 state compliant.

[Sl1ckC4m4ro]

Thank you for your help!!! Really appreciated.
What all can I do to increase horsepower then since i was going to go with the headers

[kropscamaro16]

you guys have smog shit in florida like cali? lol that sucks!

[Anthony2SS.RS]

If you don't have smog check, headers are fine. If it's just visual and emissions as long as you still have a cat you should be ok. Best thing to do is find a shop that does the inspection and ask. What can it hurt? I know in PA we have emissions and visual, but a lot of cars run with headers and a tune to get rid of the check engine from moving the cat.

[Shawnqa800720]

Originally Posted by Sl1ckC4m4ro

Thank you for your help!!! Really appreciated.
What all can I do to increase horsepower then since i was going to go with the headers

ported stock intake manifold and throttle body are about all I've seen for easy bolt on performance gains. And if you're not worried about warranty, the tune you can do to maximize those mods can get you some decent numbers. Check out Pray Performance on these forums. I've been fighting the same battle, but I cannot do the tune due to warranty considerations, so I am minimally improving performance.