Tip-Out Rich Condition

marshall.hagen · Post by **marshall.hagen** » Sat Jul 02, 2011 1:26 pm

I am trying to tune out a rich condition during tip-out. It occurs during both an abrupt tip-out, and slow tip-out. Screen images below show both quickly letting off the throttle and slowly letting off the throttle. The cells that the map passes through during tip-out are all tuned between 14.6-15.0:1 in steady-state. I want to think that the tip-out trim percent adjust is not working since the same AFR's are shown during tip-out regardless of the value entered for tip-out trim compensation. Any tips/suggestions/feedback? Thanks for any help.

JaredKaragen · Post by **JaredKaragen** » Sat Jul 02, 2011 7:05 pm

this is normal... though there is an option to disable fcut and trim tipout.

marshall.hagen · Post by **marshall.hagen** » Sat Jul 02, 2011 10:57 pm

Maybe I'm misunderstanding your post. Are you saying this is normal on eCtune? I've tuned many platforms before, and tip-in/tip-out can be tuned to keep AFR's at or around target. I would argue that it is not normal to have a rich condition during tip-out when the tip-out trim is maxed out to a remove as much fuel as possible.

TopMountGSR · Post by **TopMountGSR** » Wed Jul 06, 2011 1:55 am

If you try to correct out the rich tip out, you will cause driveability issues. Rich tip out is normal and needed to keep the car smooth during throttle transitions.

rich777 · Post by **rich777** » Fri Jul 08, 2011 3:50 am

marshall.hagen wrote:Maybe I'm misunderstanding your post. Are you saying this is normal on eCtune? I've tuned many platforms before, and tip-in/tip-out can be tuned to keep AFR's at or around target. I would argue that it is not normal to have a rich condition during tip-out when the tip-out trim is maxed out to a remove as much fuel as possible.

Yeah but remember how old our ecu's are now. Its not Ectune, its the fact your tuning on a 20 years old ecu. I know its annoying but that rich spike is normal.

marshall.hagen · Post by **marshall.hagen** » Sun Jul 10, 2011 7:25 pm

I can live with it just fine. The rich condition does not affect driveability. I was hoping it is possible to tune it out, but apparently not. Thanks everyone.

Bindegal · Post by **Bindegal** » Mon Jul 11, 2011 1:21 pm

I have found that an overly rich tip-out can be caused by the tune of the vacuum parts of the map that isnÂ´t otherwise used during normal load conditions. However, in the end tip-in and tip-out really is more about how the car feels to drive. /Allan

Post by **Bugermass** » Tue Jul 12, 2011 9:51 am

Bindegal wrote:I have found that an overly rich tip-out can be caused by the tune of the vacuum parts of the map that isnÂ´t otherwise used during normal load conditions. However, in the end tip-in and tip-out really is more about how the car feels to drive. /Allan

This..

TopMountGSR · Post by **TopMountGSR** » Wed Jul 13, 2011 9:14 pm

I agree, its important to tune out the 1 & 2 columns properly, but I never use a negative number for the tipout value. I have found it causes drive ability issues.