TL target AFR issue

FlashPro questions & answers specific to the 2007-2008 Acura TL
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VitViper
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TL target AFR issue

Post by VitViper » Sun Mar 30, 2014 9:32 pm

Gentlemen -- seems we have a bug in the TL code?

I have a customer with:
- 04 TL 6MT
- 310cc injector
- CT-e Blower
- bolt ons

Using FPM 1.7.2 (beta). AFR will vary between WOT pulls, and you can see the resultant INJ PW & duty cycles skyrocket -- one pull will be on target AFR, the next 10-12% richer.

I've emailed Derek the logs & the calibration.

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Hondata
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Re: TL target AFR issue

Post by Hondata » Mon Mar 31, 2014 7:51 am

I believe that it is from the temperature difference 212 ECT vs 188 ECT, coupled with increased knock from the increase in temperature, triggering 'cat protection' mode. We've disabled this for the next release.
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VitViper
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Re: TL target AFR issue

Post by VitViper » Mon Mar 31, 2014 11:07 am

Suspected as much -- thank you!

DomGSR-T
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Re: TL target AFR issue

Post by DomGSR-T » Fri Apr 04, 2014 8:35 pm

I seems to have a similar problem tuning at wot in 3rd gear, I cannot lean it to (13.0:1) AFR, looks like the AFR only wants to stay in the low 12... is this link to what VIT says?

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Hondata
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Re: TL target AFR issue

Post by Hondata » Sat Apr 05, 2014 7:59 am

How are you trying to lean it to 13:1 - via the WOT compensation tables?
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DomGSR-T
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Re: TL target AFR issue

Post by DomGSR-T » Sat Apr 05, 2014 1:28 pm

no only using the high load fuel table, is there another/better way to do it?

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Hondata
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Re: TL target AFR issue

Post by Hondata » Sat Apr 05, 2014 5:21 pm

No, it's just that a lot of people think the WOT compensation is a target lambda and make them lean, which forces the ECU into closed loop the whole time.

Even if the is cat protect in effect the normal fuel tables are still used.
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