nick_622

iTrader: (12)

Hey guys ... just got my Stage 1 Kit, Walbro Pump and it was tuned by Al, and now she is throwing a CEL on me?? I'm not sure what triggered the CEL, but wanted to get your opinions on what may be causing this, and if anyone else has run into this issue after getting similiar mods done??

Thanks,
Nick

brooks1005

Are you running cat-less? If so that will do it unless you have the fixes?

nick_622

iTrader: (12)

Running the High-Flow Cat.

brooks1005

People report those still kick on the CEL.Does you cat have the band clamps or bolt up? If its a bolt in, replace with the stock for a test session.I use the mechanical fix.

brooks1005

Forgot to include this...get a code reader or have someone do it.

Rnm

iTrader: (4)

Pull the code at your local autozone or pepboys.

rcheung

iTrader: (15)

Get the code scanned , then get back to us. We're just playing the "I think this is the problem" game.

32 psi daily

why don't people with CEL problem pull their CEL Code before they come in here and ask why and who?

CEL Codes basically tells you what happened and which area you should take a look. Then you could ask why and which specific part that maybe triggering these CEL codes.

lazy bums...

You should go get a cell code puller, it's $70.

nick_622

iTrader: (12)

I plan on going to AutoZone later this afternoon, just wanted to get a feel if anyone else had run into a similiar situation. I will post back with the code when I have it.

Warrtalon

iTrader: (6)

Well, yeah, tons and tons of people have CEL codes when installing an exhaust. It's par for the course. Read the code before asking us, because we're just guessing.

8urv8

I got a CEL after installing a high-flow cat. Got it checked out and that is what it was. Did the anti-fouler fix. No more CEL. But yeah, get it checked out anyway just to be sure.

nick_622

iTrader: (12)

OK guys ... just got back from AutoZone and the code is P0420 - Catalyst Effeciency.

Now my car was tuned by Al at Pruven Performance, so shouldn't the ECU not be alarmed that my Hi-flow cat is not cleaning as well as a stock Cat??

Rnm

iTrader: (4)

That code will be thrown with some high flow cats and test pipes as its less restrictive than the stock cat. Try the mechanical o2 fix or use an o2 simulator.

nick_622

iTrader: (12)

Where is the best place to buy the Mechanical O2 fix, and is it fairly straightforward to install??

Rnm

iTrader: (4)

Yeah, its very simple. Take a look here: https://www.evolutionm.net/forums/sh...mechanical+fix