klever

iTrader: (15)

Did this last week on my test pipe install it worked!!!

killian322

I just want to say thanks to whoever figured out the fix for the P0420 code, by using the spark-plug non-foulers, I put this on my car last weekend and so far have not gotten any codes.

_______

iTrader: (6)

Gonna post here to log how long it lasts. I put my test pipe on monday and threw a code that same day. Got this mod on today so we will see. Looks promising though!

Fox Fader

I have p0421. I'll try this and see if it works.

Fox Fader

There's no room for them on mine. My O2 is at/near the firewall, not down the pipe like others. I'm still trying to correct this.

Jimmer307

iTrader: (4)

I did mine over the summer when I get my new exhaust. 5k + miles and over 5 months later, and still no CEL. If you do it right, it will not come on.

Fox Fader

Finally got in there to try it again, using a 7/8 line wrench and not a O2 socket, showed I had room. Got it all put in, hopefully it works.

From under the driver's side door.

Fox Fader

LOL. Now I'm getting p0137!

I cleared it so I'm hoping it won't come back or may just be not grounding properly with the non-foulers in place. We will soon see.

jjplaya209

This will help pass emissions without a cat, but what about passing inspection?

sujinX

iTrader: (22)

depends on the type of inspection. most just look to see if u have a cat and the correct number of o2 sensors.

others actually have sniffers in the tail pipe and run ur car on the rollers at various speeds.
colorado's new emissions place :-(

Fox Fader

I just put in one fouler for giggles, now it's back to the original code.

NewEnglandRT

+1 for this tip. Bought parts Tuesday, installed Wednesday, passed inspection Thursday. So far so good!

SleepySamurai13

iTrader: (4)

Just did this and will update when I know what happens. Should work fine though, my buddy did this and has no problems. I added a little steel wool in the space inside the non foulers down by the lil hole to aid in a little filtration.

tbiggs

howdy, i have a 2005 4g94 tried to smog today and it failed due to not being odb2 ready. Seeing as i've had this code for a few years I just clear the code and go get it smogged. Never failed before but now theyre telling me the odb2 isnt ready.

So seeing as I have the 0421 will the foulers give me a decent shot at keeping the code off long enough to be ready and pass smog? My emissions are fine im just failing based on the odb2 part.

Already paid for smog twice and failed, hoping I can figure this out this third time.

SleepySamurai13

iTrader: (4)

Have had this mod on my EVO for 4 and a half months and no CEL!