Hi all

i am currently have a CLS500 and I would like to have the primary cat deleted. I am running a custom exhaust with resonator deleted and flow master mufflers.

I see a few people who had their primiary cat deleted. I was wondering how you guys get pass the check engine light ? i heard if the oem cat is taken out, it will trigger the o2 sensor or weird warnings?

i was wondering if you anyone with the cat delete experience tell me what you did? did you just replace the cat with a pipe? what did you do about sensors? any info would help!

i heard there are no sensors on the secondary cat? does deleting secondary cat make a huge difference in tone and volume?

sorry for sounding annoying

also, i would like to get an after market header. i am not looking for mad performance. it's only a 500 so i am not too concerned about gains. i just want the sound.

thanks!

 

I deleted cats on my 99 s320.Talk about power and nice sound.But no warning lights.To pass smog I add 4 ounces acetone to each 5 gals gasoline.