Cpt.Joe1983

Anyone know what kind of hp boost i would receive completely eliminating cats? When i deleted all 4 on my viper i picked up 49hp. Just curious if anyone has done this to a 65 model v12. And please dont tell me about the loud noise. Because i love it. Also i plan on doing a ecu tune from Speedriven at the same time.

euphoriaDSM

I did a 3" from the turbo back, no cats or muffler, and picked up 60hp. I can't give an exact number because the car was breaking up really bad on the dyno. I will say the sound is amazing and does not drone at all. Don't really hear the exhaust until you step on it.

Cpt.Joe1983

Ok thanx, i know the manufacturers really hinder performance motors for the sake of government regulations but anything even close to 50hp is outstanding. Have you dont anything else to the vehicle? Also, i guess it still has enough back pressure?

sgaar

Interesting, how would you handle the O2 sensors? I would assume you would have to do something so you don't get the CEL coming on?

euphoriaDSM

Just get elbow extenders for the 2nd sensors, post cat, or have them coded out on star.