FT-86 SpeedFactory Catted UEL Header

[teamxplizt]

Originally Posted by EpicNameBro

As a former resident I can tell you that they are really relaxed compared to California. You will pass smog as long as you don't have a CEL. Most shops don't even do a visual they just plug it into their computer do a run... no CEL=pass...

Great. Thanks for the info!

Aloha,
Ace

[fender9530]

Originally Posted by FR-S Matt

This code can be caused by even a high flow catted header. If this is one of the typical magnaflow high flow cats that most companies use, they let a lot of flow through. Just because it's catted doesn't mean it will act like your stock header.

When sensor 2's flow matches sensor 1's, the chance of a CEL is high for P0420. You'll typically see this while cruising, and not spirited driving. This even happens on catless headers. Same concept for either. The only way to truly eliminate it is a tune, otherwise, floor it everywhere you go and don't cruise at one speed. If you're someone that city drives a lot, you probably won't see a CEL. It's the highway drivers it catches due to the closed loop.

My CEL came on today for the second time while on the highway. I typically drive only city so maybe this is my issue. I still need to get the code scanned. I'll report back.





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[Fett4Real]

Originally Posted by STV3

Aaaannndd.... My CEL came right back on again on my lunch break just now. 5 min cruise on the highway.

If there is nothing wrong with my cat when I inspect it. I guess I'll try using a defouler.

Have you gotten the code checked? Or are you assuming?

[STV3]

Originally Posted by Fett4Real

Have you gotten the code checked? Or are you assuming?

Checked it the first two times it came on and it was P0420 both times. These past two times I have not checked. I'd say its pretty safe to assume at this point though.

[teamxplizt]

Installed my UEL headers and my CEL is on too. So where do we go from here??

Thanks,
Ace

[husker741]

Originally Posted by teamxplizt

Installed my UEL headers and my CEL is on too. So where do we go from here??

Thanks,
Ace

Read the code to see which code it is throwing. If you just installed it, there may be a leak somewhere if it threw it right away.

[fender9530]

Originally Posted by teamxplizt

Installed my UEL headers and my CEL is on too. So where do we go from here??

Thanks,
Ace

That's not a common issue. Def recheck everything.

[teamxplizt]

Originally Posted by fender9530

That's not a common issue. Def recheck everything.

I will give it a shot later on today. Thanks!

[kodyo]

If mine throws CEL, I plan to go with open flash tablet, so that's an option. Probably get even more power too.

[teamxplizt]

Originally Posted by teamxplizt

Installed my UEL headers and my CEL is on too. So where do we go from here??

Thanks,
Ace

***Status update***

Woke up this morning and rather than taking things apart, I decided to start by unplugged both O2 sensors and then re-plugging them back in...It worked! As of now, no CEL.

[jonbonazza]

I had CEL on install too way back when. Tune took care of it.

[teamxplizt]

Here are some minor sound clips I made today. Will work on drive by and in cabin sound clips in a bit.

[ame]http://youtu.be/O_OcLHFKUMY[/ame]

[chas3wba0]

Originally Posted by teamxplizt

Here are some minor sound clips I made today. Will work on drive by and in cabin sound clips in a bit.

Love it. I like especially how this header gives a more muffled rumble, unlike the hollower sound from the catless ones. Sounds more like the STi's that we are trying so hard to mimic

Installing mine this Saturday so more sound vids to come...

[Fizzo]

Ordered today, god knows how long this is gonna take