Difference in LTFT's

[vsocks1]

Just finished a head/cam/intake project on my 2003 Z06. Start and runs really well at this point. No apparent leaks or anything mechanically suspicious. In logging I see that the passenger side is consistantly running about 10% higher LTFT than bank 1. For example if bank 1 is at 1% bank 2 will likely be 11%.
Where do I start to troubleshoot? Don't see or hear a air leak or whistle. O2 sensor seems to be switching voltages properly - just has a lowerverage than bank 1 thus adding fuel. Bank 1 average was right at .450 and bank 2 was closer to .380 or so.

Please give me some ideas or places to test. Thanks! :cheers:

[Garry]

can you switch sensors to rule out a defect?

[vsocks1]

I can but that is a bit of work. Not sure I can swap front O2's without dropping headers. Should I do that or start by looking at plugs or swapping injectors? Somehow I need to figure this out!

[Garry]

yeah, O2 on stock headers are somewhat a PITA to get to on an F-Body too ... I'm spoiled with the Longtubes I have ... maybe someone else has a better idea ... thought it might be an easy thing to try and possibly rule out ...

[vsocks1]

yeah, O2 on stock headers are somewhat a PITA to get to on an F-Body too ... I'm spoiled with the Longtubes I have ... maybe someone else has a better idea ... thought it might be an easy thing to try and possibly rule out ...

I actually have American Racing Headers but don't think there is easy access to the O2 on passenger side near starter!

[joecar]

You did check for leaks at the headers (at the head, and at the collector)...?

[vsocks1]

You did check for leaks at the headers (at the head, and at the collector)...?

Yes I did - no apparent leaks!

[joecar]

Might be sensor as Garry said... post logs of HO2Sx1 voltages.

[vsocks1]

Here is the log file!