Sooo I got my stock map back on my car and i installed the UR intake and UR turboback exhaust and after a day of driving the light came on. Big deal or no?

 

{facepalm}
yeah, u should really do some reading prior to install. basically ur car is saying "holycr@p what is all this airflow!"

 

Most likely rear 02 because of HFC. It can be turned off via ECU.

 

UR intake has a larger diameter pipe causing the CEL, think there was a post on here a long time ago about it from TTP engineering.

 

Read: https://www.evolutionm.net/forums/09...ms-intake.html

 

I tried e-stalking TTP engineering to find out why their account is disabled. didn't get much other than rumor stories of the owner (forget his name) turning out to be a stupid, depressed ***** that was a shame on the tuning community. idk what happened, google didn't turn up much

but anyway, Intakes CAN be mediocre or almost useless, especially on the Ralliart. Properly scaling/calibrating the MAF is something A LOT of tuners can't do or don't do properly. I experienced it first hand when switching tuners. The very process of calibrating the MAF took longer than anything else, and it was a HUGE PITA - but it definitely made a difference.

Being more specific to the OP, I think that UR intake is crap. I think it's impossible that you can make an intake worth buying without using up the space taken by the battery. even there you run into heat-soak issues, let alone placing it behind a massive battery, in the back of the engine bay

disclaimer: this is all my opinion from experience trying different intakes and tunes on my RA. I'm no expert

 

Ive had the intake on for a few days before the DP and HFC got installed and it was all fine

 

Usually it takes a couple days (depending on how much driving you do) before the fuel trims sway enough to trigger a CEL.

 

So much speculation and miss information going on...

Please pull the codes and post them rather they just Ohh No's I have a check engine light and no idea what the codes are.......

The UR RA intake uses the SAME diameter maf tube as stock..... Like Bryan said it is probably the rear 02 cell.... no reason to speculate when you can pull the codes and know for sure.

 

he is gong to pull the codes and its going to say his gas cap wasn't tight enough

 

Mine has been on since my rear 02 got torn off, could be that

 

^??? do I even want to know ???

 

OP-
Yes pull ur code. Most likely guesses are:
1) Holy cr@p why are the exhaust gases so rich/lean/cold/hot?
2)Holy cr@p the fuel trims are as calculated from the last couple hundred miles suggests a dangerously rich/lean condition?

Its definitely going to be air flow related, just depends on before (intake) or after (exhaust)...

 

Could someone clarify:

Does the dash say "Service Engine Soon" or "Check Engine" with a engine symbol?

 

Went to autozone today, the code is P0420