hey guys i want to tune my FIC 1250cc injectors and need your help..!

ok so i need to tune my fuel trims and as far as i read you need to tune the (LTFT) mid and low and leave the high!...so i'll be datalogging today but need to know should i log the (LTFT) low one first or the mid one? and during the mid one what speed and gear should i be in?

right now iv'e scaled my injectors to 1271cc

and the latency goes like this..

battery voltage ms
4.69 4.008
7.03 3.096
9.38 2.208
11.72 1.512
14.06 1.056
16.41 0.816
18.68 0.648

is the above value correct?

what trim value should i be in +5 or -5 for my fuel trims to be correct?

plz guys you have to help me get my trims right i'll start datalogging and reporting back as soon as you answer my questions!

 

bump!

so i logged yesterday and my (LTFT) low and mid are very same at -12.4
so should i increase my injector size or decrease them to get to -5 or +5 ?

anybody plz answer,belive me i cannot do this without your help!

 

increase!

 

https://www.evolutionm.net/forums/ec...upermerge.html