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Off throttle lean spike
Posted: Tue Sep 15, 2015 11:53 am
by 0081
Hey Guys,
After my intercooler install I'm getting an off throttle lean spike and was wondering what table is the best to tune it out,
Looking at the tables I'm thinking I need to adjust either
AE Fuel Multiplier Decay Vs Reference counts or
Decel Fuel Multiplier Decay Vs Reference Counts
Am i on the right track??
Regards Peter
Re: Off throttle lean spike
Posted: Tue Sep 15, 2015 12:28 pm
by vlad01
This is just decel fuel cutout. You want to leave it like this as it saves unnecessary fuel being wasted, it helps a fair bit with economy.
Re: Off throttle lean spike
Posted: Tue Sep 15, 2015 12:30 pm
by Holden202T
what car and what computer are you talking about ?
Re: Off throttle lean spike
Posted: Tue Sep 15, 2015 12:40 pm
by 0081
Holden202T wrote:what car and what computer are you talking about ?
Always forget to add that info in, its A VY flash PCM using the enhanced code.
I didn't think it was the fuel cut off as it goes lean straight as i back off for a second then comes back to target AFR then the DFCO cuts in
Re: Off throttle lean spike
Posted: Tue Sep 15, 2015 8:19 pm
by VL400
Decel enleanment most likely, occurs as soon as you lift off but only briefly. DFCO then happens later but lasts longer.
Re: Off throttle lean spike
Posted: Wed Sep 16, 2015 7:32 pm
by 0081
VL400 wrote:Decel enleanment most likely, occurs as soon as you lift off but only briefly. DFCO then happens later but lasts longer.
i was thinking it might have been that one but I'm also a bit unsure on how that tables works,
Does it count up from 00 ? can someone explain how the PCM uses that table?
Thanks Pete