Closed throttle fuel decelration enrichment

General Tuning Questions And Discussions
Post Reply
vp304
Posts: 451
Joined: Wed May 19, 2010 2:21 pm

Closed throttle fuel decelration enrichment

Post by vp304 »

So my tuning skills are kinda basic but have a question you guys maybe able to help me with.
Car is fully tuned before i fire away and mixtures are pretty dam good all round on and off boost.
Car drives good.
On my vr l67 with 11p when i monitor with my wideband at the tailpipe with a sniffer.
When i free rev the engine and let go of revs it swings right around to around 12.0 afr then takes around 10 sec or so to work its way back up to 14.7 at idle.
here is some settings below of my tune.
Is there a reason it does this and can i lean of the deceleration enrichment i think its called so it say hovers in the low 14s or so when i come of the throttle ?
Slow rev or hard heavy rev its still mega rich by the wideband reading when coming down from a rev and even once it has settled
Attachments
De accel.jpg
De accel.jpg (170.75 KiB) Viewed 2214 times
vp304
Posts: 451
Joined: Wed May 19, 2010 2:21 pm

Re: Closed throttle fuel decelration enrichment

Post by vp304 »

Anyone?
User avatar
delcowizzid
Posts: 5493
Joined: Sat Feb 28, 2009 8:38 pm
Location: Wellington NZ
Contact:

Re: Closed throttle fuel decelration enrichment

Post by delcowizzid »

Post up a log
If Its Got Gas Or Ass Count Me In.if it cant be fixed with a hammer you have an electrical problem
vp304
Posts: 451
Joined: Wed May 19, 2010 2:21 pm

Re: Closed throttle fuel decelration enrichment

Post by vp304 »

Wideband isnt hooked into factory ecu if thats what you need the log for delcowizzid ?
Post Reply