help with fuel tuning please

[Stez]

Im pretty new for tunning the fuel, had not much practice yet, so sorry if the question is stupid.

I just installed a 680cc (i guesse) pte injectors and have a Maft Pro for tuning.
Please, help me to tune the low load, how much % should i compensate and wich numbers on the Logger should i look to tune it properly

 

[olmytsi]

I don't know how to use the maft pro. However, it should have instructions on what to set it to baseline for your injectors. You want to tune looking at timing since you cannot see knock (detonation).

Please, make sure you read and learn before going messing with the settings...you can blow up the engine really easily if you don't know what you are doing.

 

[Stez]

I don't know how to use the maft pro. However, it should have instructions on what to set it to baseline for your injectors. You want to tune looking at timing since you cannot see knock (detonation).

Please, make sure you read and learn before going messing with the settings...you can blow up the engine really easily if you don't know what you are doing.

using Maft Pro in tuning is as easy as Safc - so this is not a problem to add or retard some % of fuel in some point (its even esier with maft pro), and i CAN see knock with my Logger so this is not a problem too.

Tune the high load (with knock) is not a big problem i guess, Im more interesting how to tune low load map, and how to see is the compensation wright or not, should it be bigger or smaller?

and maybe someone has 680cc injectors - what is the % of compensation at idle do you have???

 

[olmytsi]

Sorry i somehow thought you had a 2g. Well just tune for no knock period. You have to adjust the low throttle % according to your fuel trims. Evry car is different, don't use other people's settings.

 

[Kevin Jewer]

Just as a rough reference point, the x80 injectors tend to flow like x50 injectors, and the compensation factor for 650s is 30%.