Hi

Engine displacement should be as accurate as possible, so if you have a 1248cc engine, then you should enter 1.248 into the displacement field.

Boost adjustment is only if you constantly read positive boost (typically 14.5psi, and this should generally be left alone. It's primarily for some mitsubishi engines only.

VE should also be left alone, 85 is suitable for most vehicles, older larger litre engine vehicles may be lower (as far as 75), and higher performance engines may be higher (this is usually only for specialist setups though)

Thank You! 🙂

i saw that the supercharged cars have greater VE. My car is supercharged.The engine is 1.3 CDTI (Common Rail) Diesel Turbo Jet

Can you read this? You can manage to implement something for torque to calculate the VE.

http://www.installuniversity.com/install_university/installu_articles/volumetric_efficiency/ve_computation_9.012000.htm

That'll work, but only for vehicles that have a MAF sensor (MAP won't be able to do it as you need the VE entering in the profile, which negates the accuracy of the equation :-))

I'll see what I can do.