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Title: Proper way of cleaning trims between bank with KFBS Post by: vdubnation on July 24, 2016, 06:19:25 PM Whats the proper way of cleaning up fuel trims between banks with KFBS ?
Title: Re: Proper way of cleaning trims between bank with KFBS Post by: nyet on July 24, 2016, 06:57:31 PM Whats the proper way of cleaning up fuel trims between banks with KFBS ? I've never really seen a bank mismatch that was bad enough that it needed tuning out... big differences usually indicate hardware/mechanical issues ymmv. Title: Re: Proper way of cleaning trims between bank with KFBS Post by: nubcake on July 25, 2016, 03:20:13 AM Well, what comes to mind: log STFTs for both banks long enough, then run them separately through something like FKKVS fixer and overlay both tables. Apply consistent differences to KFBS.
That being said, I agree with nyet here. If the difference is within 2-3%, you're mostly chasing shadows. I mean, even if you "perfect it out" for a given day, then one of the O2 sensors gets replaced with a new one that is 2% off (or something like that), and all your work goes into the dumpster. Title: Re: Proper way of cleaning trims between bank with KFBS Post by: vwaudiguy on July 25, 2016, 07:09:24 AM Maybe wg preload differences causing back pressure differences between banks? Just a thought.
Title: Re: Proper way of cleaning trims between bank with KFBS Post by: vdubnation on July 25, 2016, 08:12:55 AM I've never really seen a bank mismatch that was bad enough that it needed tuning out... big differences usually indicate hardware/mechanical issues ymmv. Oh I know but the 2-3% bothers me and have seen it in the last couple months alot . Idle trims will be within .1 but partials always 2-3 percent. Title: Re: Proper way of cleaning trims between bank with KFBS Post by: nyet on July 25, 2016, 11:06:32 AM There are a million other things that a tune can always use work on than worrying about that ... unless you have a hardware problem.
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