These are the codes I'm getting? Any thoughts ?
Light came on just after I installed resonated test pipes from fast intentions . I replaced the oxygen sensors at the time of install of test pipes. They are bosch o2 sensors. Could a exhaust leak cause any of these codes?

 

Might be stating he obvious here but have you tried re-setting the ECU so everything can become reacquainted? Might need a re-set to re-learn the new calibrations.

Hopefully someone can chime in who has seen this, but I thought FI were supposed to be CEL free.

 

Yes, an exhaust leak can cause these and you may also need to mount o2 spacer bung adapters (see Ebay link below) between your o2's and the cats.

2Pack Stainless Steel Universal O2 Sensor Bung Adapter Spacer M18x1.5 x 45mm | eBay

 

You could try to put in the OEM A/F sensors, just incase the aftermarket ones are more/less sensitive.

What year is your G?

 

1. Check for exhaust leaks
2. Use your tuner EcuTek/UpRev cable and program to clear DTC's
3. If those don't work order OEM 02 sensors and return the Bosch ones.

I believe the FI RTP's have a J bung to space away the 02 from the exhaust stream. I know my AAM one's do.

 

Yes, they have the J bung.

 

I agree with that. Aftermarket parts has disappointed me for too many times.

 

How do I reset the ecu or whatever but not loose my uprev tune?

 

Unplug battery overnight