Hey fellas i im contemplating the idea on replacing the catalyst with a test pipe, but since there is an 02 sensor after the catalist will this cause a CEL?

 

Yes it will cause a P0420 code. You will want a CEL fix. You can do the fouler trick or buy one from us.

http://www.rallysportdirect.com/shop...oducts_id/1147

Ben

 

www.o2simulator.com

 

hey can u tell me how ur Aluminum piece can fix the cel ?
i thought it would be a o2 simulator

 

What it does is it takes the sensor out of the exhaust stream so the sensor sees less of the exhaust gases. I have never had one not work perfectly.

Ben

 

i'll back him on that, i made my own with the foulers, but the same thing basically, over 15,000 miles and no CEL

 

i agree! did the same with my test pipe and works great!

 

I also agree with the fouler setup. I did the same thing to my VIII when I installed the one piece 3" downpipe w/cat elimination. Works PIMP and no CEL

 

+1 I had one of those come with my test pipe, I haven't had a CEL since.

 

Well, I'm the first then.

I bought one from you back in July of last year and drove the car for a few months and then bang! The CEL came on again with the P0402 code. I'm wondering what's going on with this.

-M

 

P0402 is for an EGR issue, not the catalyst inneficiency code P0420 and will not be fixed using this method. Did you simply mis-type the code number and mean to type P0420?

 

Mechanical o2 sims work majority of the time, but like their electronic counterparts they don't offer a 100% guarantee.

If it doesn't work I would suggest trying to drill a smaller hole in the fouler or soldering some extra material at the tip of the undrilled piece to greater limit the amount of exhaust gas the sensor sees.

 

Ultimate racing has a cat delete with a built in CEL fix for like $125