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!

 

You.might get more help in the engine or ecuflash section. Also search for posts on injectors scalings. I don't think every car is the same but it will get you.on the right path.

 

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

If you read through this it'll give you a very good idea on how to tune them. I'm in the process as we speak as well tuning my 1200 cc injectors. They also have a list of scalings and latency that other people have used successfully. Granted every car IS different so you can plug these numbers in to get you in a ball park area, but you'll still have to do some fine tuning yourself.