This one has me ripping my hair out. Ever since I installed the turbo dump pipe, downpipe & cat delete, my cel has been on. I reset it once already and it turned back on after a few hours of running. Is this a common prob? How do I fix it? I'm assuming it's something to do with the o2 sensor, but the car seems to run great.

 

needs tune up

 

02 simulator is the answer

 

Needs a search, more like it.

https://www.evolutionm.net/forums/sh...ad.php?t=99583

https://www.evolutionm.net/forums/sh...ad.php?t=86678

https://www.evolutionm.net/forums/sh...ad.php?t=65950

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https://www.evolutionm.net/forums/sh...ad.php?t=48741

https://www.evolutionm.net/forums/sh...ad.php?t=39324

 

Its your cat-delete pipe. There is tons of stuff on it, just search for it. Just type in cel fix.

 

sweet, i'm #9 on ur list, sorry to post a question on your forum

 

p0431 or p0400

lack of cat. I'm sure nothing serious.

Does it come up when you slow down?

 

Hopefully it's the cat delete and not the p300 code hehe. I hate that damn code! Cat delete just goto autozone, spend 2 bucks on a pair of 18milimeter spark plug defoulers. Drill one out with a 1/2 inch bit. Screw your o2 sensor into the drilled defouler. Screw that defouler into the other defouler and then into the pipe. Wala.... it's worked for me so far for like 4k miles.

 

This is the way to go..........works great

 

this has been working for me.

https://www.evolutionm.net/forums/sh...ad.php?t=99137

 

Try what fre said its working for me.

 

Let's back up and think for a second.

Did you read this before you posted?

It's in the Newbie section, and I'm sure you read the terms of usage for OUR forum when you signed up, right? In case you missed it, you can read them here.

Have a nice day.