I was throwing these codes and replaced both rear 02 sensors, after resetting the ecu with scanner the car is still throwing these codes. After codes throw the car will go into limp mode and will not allow you to go over 2500rpm in any gear...

My car is a 03 Sedan has Injen Cai,
Long tubes, no cats, y-pipe and catback.


any ideas?

 

You need to get tuned or get rid of the LTH's. You can't tune most of the 03's with Uprev so I would check your ecu first, if you're in luck its the newer model and you can tune it with Uprev, but most likely you're SOL.

 

^+1 I had a client who has an 03 he was throwing the same codes and i was able to correct the issue with osiris for him. Like seymore4 said check your ecu if your in luck and have someone with osiris tuner in your area they can pull your ECU part # and we can see if its compatiable for you or you can contact uprev directly.

 

Check which ECU you have and post back up

 

Yup I have known for a while I am SOL bc I don't have the good Ecu

 

Thanks for the pics, I m going now to double check which 1 I had...when I called Uprev, they just asked me, metal or black plastic box...I know it's metal, but now I m hoping I have the bottom one...

 

The 3 ecus above dont match my ecu. The ECU in my car is a silver metal box, but only has 2 small plugs in the center of the box. This is located on the passenger (right) side lower kick panel. If I post the numbers off the ecu, would that help determine if mine will work?

 

A64-000 ln4 2x08

 

I'd call uprev tomorrow and ask Jared or Omar, I really don't know. If you have your VIN handy I believe they can reference that as well

 

I grab the vin# as well...& call them 2mrw...Very tired of throwing codes, the Car is running like crap!!! If the Ecu isn't flashable, I may go with a Apexi Neo piggyback & tune it. I just moved up to Atlanta, from Pensacola. So hopefully there are some guys up here that can tune...

 

you'll have better luck removing the LTH's and putting stock cats back on over tuning with the Apexi Neo

 

what about a set of shorty headers and hi flow cats, then tune with Apexi Neo?

 

Looking at a set of Strup Headers and Kinetix High Flow cats..

 

I may be in luck, called uprev and they are telling me to bring the car to Forged Performance in Atlanta to do an ECU dump so they can look at the data and see if it can be tuned..Crossing Fingers!!!