Im calling out to the Evo owners in Ontario, running a catless dp. Have you tried the new emissions test with no cat? Is there a way to tune around the o2 sensors so they don't trip a cel? Im thinking of going catless but don't want to be switching dp's.

 

There is not a cat in the downpipe. Yes, you can tune around not having a cat.

 

My mistake, thought it was all one piece. So an aftermarket downpipe and catless midpipe would net some serious gains.... thanks again for the help evo8426

 

there is an o2 sensor downstream you need to disable in the ECU

 

Would an o2 simulator accomplish this?

 

Y don't u just put in the oem cat back in for the etest and then afterwards just change it?

 

That's defiantly an option. I'm just looking for a set it and forget it solution