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Thanks guys

That’s what I’m thinking but my tuner says it’s my truck. I can cause a vacuum leak and it’ll improve enough to stop throwing codes.

I’ve paid a tuner for this but he says it’s the truck, not the tune. I don’t know much about tuning. I wasn’t even logging the LTFT’s until it started throwing codes. Just trying to figure out if...

I did initially have a vacuum leak, that?s why I ended up replacing the gaskets. After was when the trims went negative. I don?t know what the tuner did to those tables. I was hoping someone here...

Hey guys, my LTFT's are staying at -19.5% and at idle the STFT's are pulling another -10% or so.
I just got it back from tuning last week and the bank 1 stft's were a little lean and I ended up...