I had a bassani x-pipe with cats installed, a day or 2 later service engine light came on.....codes are P0141 - O2 heater circuit malf. b1 s2 other code is P1127 - O2 sensor temp out of range. Have tried everything with Predator like turning off sensors...light still comes back on. C&L predator tuned to 93 street racer kit, although tune has been installed for about a year. I have heard about mil eliminators....any1 know if that is what I need? Or any other solutions??? I called dealer and they said if the codes track back to exhaust then I will be charged and it only makes sense that it will since the light came on right after install. This is really bugging me!! Please Help........

 

You're sure you plugged all the sensors back in right? You're sure you've got the rear o2 sensors turned off on your tuner and the tune installed? If you've got these things covered, then I can't help you.

 

Did you disconnect the battery before the install?

 

Yes I had the installer verify the sensors were connected and in the exhaust flow. Tune is installed and odbII selected to off.

 

You might have burned one of them up or broken one. Do you have the ability to datalog? If so I would datalog it and see what it says. I know that my car started acting up really bad and it was due to a malfunctioning o2.

 

is this a common problem??

 

Do you have an '07? I have read of two '07's that have this problem in spite of doing it all correctly.

 

NO, it's an 05

 

I should not have this problem with the check engine light because I have the x-pipe WITH cats, RIGHT??? Anyone know if the MIL eliminators would work for me??

 

??????????

 

Did you get an sct xcal II, nope sorry can't help you j/k MIL Eliminators, or get a new tune, recheck the 02 sensors. Oh, I didn't see that you had the cat's on there-scratch the MIL's

 

Did you figure out the problem?

 

Battery disconnected during install?