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My tune keeps changing

Posted: Sat Aug 22, 2015 2:52 pm
by redyute
99 4 door civic with a3 swap, been running good for the last month but lately my tune keep changing up on me often enough that I have to carry the laptop to tweak it like every day. Example 5am I leave home for work, idle afr 11 so i get up to mid 14's, then 2:30 I get off I fire her up afr's like 18, then driving home she suddenly goes lean, like way lean that i had to pull over cause she would barely move. I'm not sure what the problem is maybe a bad sensor or something. So feel free to throw ideas around, need my baby to run good again lol.

Re: My tune keeps changing

Posted: Mon Aug 24, 2015 9:55 am
by Spunkster
Has this been professionally tuned?

Re: My tune keeps changing

Posted: Wed Aug 26, 2015 5:48 pm
by redyute
no it has not

Re: My tune keeps changing

Posted: Thu Aug 27, 2015 9:23 am
by Spunkster
The calibration cannot change itself. It sounds like a tuning issue more to do with compensations.