LS3 Exhaust

[sressue]

Can I use the FFR exhaust that came with my GTM kit on my LS3 Erod without having issues with the ECM? Not sure how it will effect the emissions either. I do have the exhaust for the LS3 but would have to modify it quite a bit to make work.The headers are off a 2004 corvette.
Thanks, sressue

[Andy@FFR]

The exhaust should bolt up okay if you use the 2004 header, and I don't think it would cause any significant issues with the engine because you are still using cats. You may want to contact a tech guy at GMPP to find out how sensitive the EMC calibration is to changes like that.

[crash]

Don't know if these would be useful to you or not, but thought I would offer them up since it is how I am making my stock LS3 headers work.

http://www.myraceshop.com/Flanges.html

[first time builder]

I built a 59 Corvette with LS3, aftermarket long tube Headers and NO Cats. I used the GM erod computer with no problems. The main problem was locating the MAF sensor 10 inches from the throttle body(which is a must according to the GM supplied instructions). I welded O2 bungs in collector portion of header

Kenny

[c6_rob]

The only way to get around the distance issue it is a proper dyno tune. I use HP Tuners. I see you are in New York, ECS, East Coast Supercharging will make anything LSx work. These guys will get you in the right direction. With proper tuning you can get around alot of issues.