94ltz

So I just finished building my new motor and need to do a emissions test but need to get my Kooks green cats installed to pass. I took the car to a exhaust shop in Windsor after they said it would be 80-100 each side, we put it on his lift and his price jumped to 640+\- a couple hours ($80 an hour).

So at this point I'm looking for some help. I either need a shop that has done this exhaust work before going from a cat-less X pipe to installing these cats or some one that would rent me a X pipe that works on a 08 c6 ls3- (3"x3" and goes down to 2 1/2 exit).

kromberg

Talk to Rich at Corvette Connection in Denver. They do lots of great custom exhaust work.

Wop1

I've used Exhaust Pros in Northglenn for years. See Mike. If you are planning to build the catted X pipe and use it permanenty, the green cats may be OK. Usual issue w/emissions tests and aftermarket cats, particularly with a modded motor, is that they don't get hot enough to light off. I had to take a factory center section, shorten it and use the factory cats, swapping out the hi flow cats and X pipe every two years to pass the test, along w E85 and a re-tune. Good luck.

94ltz

What I'm trying to figure out now is if I should just build a catted X with my stock stuff or try to cut my existing Kooks one up and install the green cats and add some e85 to the tank.

Just not sure yet.

vette 99

I would be Happy to Talk with you regarding your Exhaust/Emissions needs. But I do need more Information to help. Feel Free to give me a call at 303.298.8388. We do a lot of Corvette Specific Exhaust, but every Project is Different.

Thanks, Rich

94ltz

After my last conversation with your shop about my build I will never do business with you.

His93C4

Check with Cory @ House of Mufflers @ Evans & I25 in Denver.

C5fourj

I used Exhaust Pros in Northglenn for two jeep projects and a Duramax and they we're great.

RockyMtC5

So did you get your emissions test?

94ltz

No, been busy and buying guns.

Fly'n Family

I know it's a long shot, but by any chance did this Cory once work at Dragon Racing?

I ask because he built my LS3 and it was amazing, and I'd like to find him again to do more work.

94ltz

I believe that Corey is at Colorado Speed and Performance

Fly'n Family

Wow!!! Many thanks - I hope that's the case. If so you just solved a huge dilemma for me.