Off throttle lean spike

0081 · Post by **0081** » Tue Sep 15, 2015 11:53 am

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

Post by **vlad01** » Tue Sep 15, 2015 12:28 pm

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.

Post by **Holden202T** » Tue Sep 15, 2015 12:30 pm

what car and what computer are you talking about ?

0081 · Post by **0081** » Tue Sep 15, 2015 12:40 pm

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

Post by **VL400** » Tue Sep 15, 2015 8:19 pm

Decel enleanment most likely, occurs as soon as you lift off but only briefly. DFCO then happens later but lasts longer.

0081 · Post by **0081** » Wed Sep 16, 2015 7:32 pm

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

Off throttle lean spike

Off throttle lean spike

Re: Off throttle lean spike

Re: Off throttle lean spike

Re: Off throttle lean spike

Re: Off throttle lean spike

Re: Off throttle lean spike