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how to correct going rich on decel

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Old Sep 24, 2013 | 06:43 PM
  #21  
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Originally Posted by Gadgetized
EFI Live only made this available in the CAX file as B9021. HPT has this available as the minimum fuel milligrams. I did not discover this, I was directed down this path by a fellow PT user that deserves the credit. I just decided to spend the credits on HPT to try to change it and it worked. I love EFI Live, dont get me wrong. I love the COS, but EFI Live needs to understand that there are plenty of people using their software on the 02-07 OS's, and they need to address this issue.
This is my one and only gripe with EFILive... I have asked them... go on the EFILive forum and search for my posts - add to the one where we ask for B9021 for 1MB PCMs...

His minimum fuel milligrams is already pretty low, but I would also recommend cutting it in half and seeing if that helps the situation. Go to engine/fuel/transient/min fuel milligrams and half it...
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Old Sep 24, 2013 | 06:48 PM
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so for anyone having this problem, i halved the min fuel milligrams this morning, took a little ride, and it's definitely fixed the problem. dfco is leaning it on out now on decel. think i'll turn off the dfco temporarily so i can finish tuning the ve table.
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Old Sep 24, 2013 | 07:10 PM
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So going to 0.014 fixed the issue? Are there any repercussions when going that low as a minimum?

If you are running the 80lb from FIC, your IFR is high if you are running 58psi as a base pressure.
Last edited by oakley6575; Sep 24, 2013 at 07:16 PM.
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Old Sep 24, 2013 | 07:34 PM
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yea the injectors are 106.7 lb/hr at 58psi. i don't see anything wrong with going to .014, it allows the injectors to go down to 1.5ms now, which allows dfco to kick in on decel now and do its job instead of everytime i let off the throttle it immediately going to 11.0-11.2
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Old Sep 24, 2013 | 08:00 PM
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Glad to hear that did it for you!
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Old Sep 24, 2013 | 08:21 PM
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If anyone reading this cant tell, ^^^ he is the one that got me in the right direction on this. Thanks Bret.
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Old Sep 24, 2013 | 09:04 PM
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In your first post you said you are running the FIC 80lbers. I'm running the same injectors and have the same exact data in my tune. If they are rated at 80lb/hr at 3 bar, then they flow 92.4lb/hr at 4 bar. So are you running the FIC 850cc or FIC 1000's?

Just wondering because if they are sending the same data out for different size injectors, I won't be too happy.
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Old Sep 24, 2013 | 09:21 PM
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Originally Posted by oakley6575

Just wondering because if they are sending the same data out for different size injectors, I won't be too happy.

Well they are nice guys and all over there but wouldn't be the first time I've heard of an issue with the injectors and the data they send out with them.
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Old Sep 24, 2013 | 10:08 PM
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well i just looked at the injector data.. i told them i wanted 80lb injectors.. looks like i got 92.4lb injectors though. they're 850cc. 92.4lb at 3 bar.. 106.7 at 4 bar
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Old Sep 24, 2013 | 10:24 PM
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Originally Posted by MechE
well i just looked at the injector data.. i told them i wanted 80lb injectors.. looks like i got 92.4lb injectors though. they're 850cc. 92.4lb at 3 bar.. 106.7 at 4 bar
850cc = 81lb/hr

Same injectors as me. The 850cc injectors are 92.4 at 4 bar. Might want to change that before you finish your VE
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