Gen 4 with 3" catless exhaust????

[bmw2nv2000]

Can I install the 3" catless mopar race exhaust on my gen 4 without using a venom controller without any bad side effects? If yes Do I need to install the rear O2 sensors before the muffler or just hang them under the car to sniff fresh air like I did on all my Gen 3's? I will get around to ordering a Mopar ECM soon but I have the itch to install the exhaust now

 

[Viperless]

You will get a CEL but it won't affect anything. You can hang the 02's or, for a "CEL less" install, weld a couple bungs in the pipes and use spark plug anti-foulers.

 

[bmw2nv2000]

Thanks bud Ends up my car already had a magnaflow system on it so Im gonna go tomorrow and have the muffler shop cut out my cats and just sell the new mopar 3" race exhaust.