Rich @ Idle but No CEL

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I done fucked up for the last time.
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*Email out to tuner and checked other forums, but needing help*

Looks like I'm trending 14.2-14.5 AFR at idle. LTFT at idle is +9.x. I'm used to seeing 14.7-14.8 after the ECU does it's hunting/making sure the primary 02 is working thing. But that's usually not occurring when sitting at idle continuously, but slowing down to a stop light, etc.

No CELs. It could be a vacuum leak, adding unmetered extra air that my idle LTFT has to go positive to fix. Or it could be a potential exhaust leak, maybe the DP flange area, because any leak pre-IM should cause lean at idle because everything is under vacuum at idle. Logs attached.

Thoughts?
 

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Has anything changed recently that could've caused this or did you just recently notice this because of a weird idle or something?
 
VashEXE said:
Has anything changed recently that could've caused this or did you just recently notice this because of a weird idle or something?
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Nope. Just normal wear and tear. Tightened up intake and FMIC couplers. put a new MAF o-ring on, cleaned the MAF, and did a few MAF cal revisions (my 93 tune is one of the last unlocked ones before Justin switched over to locking all maps). Voila, I'm in the +/- 3 LTFT range across all breakpoints again.
 
Update: after pondering this a while and pretty much ruling out any mechanical issues (due to my 93 LTFTs all being on point), I just asked Justin to update my idle breakpoint range MAF cal. I had to toss him $20 anyways to get an EGR-enabled map for inspection this month. He was gracious enough to throw in the slight MAF adjustment as a freebie. Looks like my E28 map LTFTs are all within +/- 5 now :D
 
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