AFR's

[gttuning-glenn]

what should the afr's be on a starlet running td04 at around 1.4 bar??? thanks

 

[Chris@CCM]

mid 11s dude best would be around 11.8

 

[gttuning-glenn]

cheers mate, is this the whole way throught the rev range or just when turbo kicked in?

 

[Chris@CCM]

that would be on boost mate . loads of diffrent tuners map turbo cars diffrent coming on boost

 

[gttuning-glenn]

so around mid to late 11's on boost, what about off boost mate?

im just interested in finding out as a mate is thinking of mapping his own car

 

[Chris@CCM]

so around mid to late 11's on boost, what about off boost mate?

im just interested in finding out as a mate is thinking of mapping his own car

if he needs to ask these things mate i think its best he dose not mate it is not a easy job . when u mean off boost do u mean under light load ?

 

[gttuning-glenn]

yea light load or at idle? cheers

 

[Chris@CCM]

at idle u want around 14.7 mate light load depends tbh on how u drive tho around 14 i would think tho it depends if ur real hard on ur car or not. if u r u might want it runing richer to cool it off faster

 

[gttuning-glenn]

ok thanks for all your help mate, know a wee bit more about it now.

 

[Chris@CCM]

keep it mind thats just my take on it dude . other ppl will say diffrent things but thats y some cars make more power then other and some tuners r better then others lol

 

[HYBRID]

chris is spot on target!

i had posted this up a while back as well... so lemme give the figures & af targets u should aim for

idle 14.7~15.5af
cruising 14.0~14.7af

boost just coming in (ie say up till 4psi) 12.8~13.2af

whatever boost ur running till redline 11.8~12.2af

thats a setting which is for maximum efficiency & close to the limit so ur tune will be safe, yet very agressive

kon

 

[gttuning-glenn]

thanks, both of you have been really helpful, is either of you good with emanage as there is a couple of questions on it? thanks

 

[Sheldon]

you get these readings with a wideband?

chris is spot on target!

i had posted this up a while back as well... so lemme give the figures & af targets u should aim for

idle 14.7~15.5af
cruising 14.0~14.7af

boost just coming in (ie say up till 4psi) 12.8~13.2af

whatever boost ur running till redline 11.8~12.2af

thats a setting which is for maximum efficiency & close to the limit so ur tune will be safe, yet very agressive

kon

 

[Chris@CCM]

you get these readings with a wideband?

only real way to get them mate

 

[Sheldon]

cheers

 

[Fishy89GT]

imo 11.7:1 on boost, bit rich, but its needed on a turbo car to cool the combustion chambers..and 14.5:1 - 15.4:1 on idle..