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HomemadeTurbo - DIY Turbo Forum (https://www.homemadeturbo.com/)
-   Engine Management (https://www.homemadeturbo.com/engine-management-10/)
-   -   Equation for tuning fuel maps. Please help before I try to tune. (https://www.homemadeturbo.com/engine-management-10/equation-tuning-fuel-maps-please-help-before-i-try-tune-40948/)

J-MAN 06-14-2005 05:48 PM
Re: Equation for tuning fuel maps. Please help before I try to tune.
 
thanks DarkElvis for posting this question, i didn't even know about a formula

TurboEF9 06-15-2005 09:08 AM
Re: Equation for tuning fuel maps. Please help before I try to tune.
 
Hehehe. it's not really "a formula for tuning fuel"... it's just simple math to find the difference in two numbers. :)

Darkelvis 06-15-2005 01:45 PM
Re: Equation for tuning fuel maps. Please help before I try to tune.
 
yea, once you posted it i felt kinda stupid. It's just a simple percentage formula from like 6th grade math. O0

Turblow 06-16-2006 05:51 AM
Re: Equation for tuning fuel maps. Please help before I try to tune.
 
This formula makes tuning a LOT easier

Thanks

W O T 06-18-2006 08:09 AM
Re: Equation for tuning fuel maps. Please help before I try to tune.
 
Awesome formula!

I suck at math so yes it helped, not so simple to me

Oscar 06-18-2006 10:04 AM
Re: Equation for tuning fuel maps. Please help before I try to tune.
 
Originally Posted by jeffsciv23
thanks DarkElvis for posting this question, i didn't even know about a formula
yea, i was actually trying to figure this ---- out yesterday. I'm playing around with my map because its uber rich! my tail pipe is blacker than .....i duno, its just super ------- black.

0b00st0 06-18-2006 01:55 PM
Re: Equation for tuning fuel maps. Please help before I try to tune.
 
Originally Posted by FooK
8.6% equals 1:1 AFR change, so if you're at 10.5:1 AFR and you pull 8.6%, you would then be at 11.5:1

Go back to math class buddy. 10.5 to 11.5 is 9.5% difference. The only time a 1.0 A/F change would happen with 8.6% change in fuel would be if you started at 11.63 A/F.

For fuel since the values are inverted to the A/F

(Current A/F - Target A/F) / (Current A/F) = % Change in fuel

0b00st0 08-12-2006 08:21 PM
Re: Equation for tuning fuel maps. Please help before I try to tune.
 
Originally Posted by MADMAX
Originally Posted by FooK
8.6% equals 1:1 AFR change, so if you're at 10.5:1 AFR and you pull 8.6%, you would then be at 11.5:1
Go back to math class buddy. 10.5 to 11.5 is 9.5% difference. The only time a 1.0 A/F change would happen with 8.6% change in fuel would be if you started at 11.63 A/F.

For fuel since the values are inverted to the A/F

(Current A/F - Target A/F) / (Current A/F) = % Change in fuel

FooK 08-12-2006 10:17 PM
Re: Equation for tuning fuel maps. Please help before I try to tune.
 
why did you just requote yourself on a post from june...chug your mothers fat cock.

0b00st0 08-13-2006 01:58 PM
Re: Equation for tuning fuel maps. Please help before I try to tune.
 
Originally Posted by FooK
why did you just requote yourself on a post from june...chug your mothers fat cock.

To make idiots like you wonder why. Get off my nuts already.


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