Although there are quite a few members on this forum that have been tuning their cars for many years, there are also many members that have just started to venture into this world. There are no doubt some members that are fine with getting a tune and never bothering to check their logs to see how their engine and cpu are performing, and then there are those of us that would like to know exactly how how well our engines are keeping up with the new variables from the map that was just written on the cpu.
This is the first car I've ever owned that I've invested in a tuning solution where I can actually see the different ratios that the CPU is monitoring and I think it's pretty effing cool. I just wish I knew what everything I'm looking at meant. I've picked up on a few things just reading through the most recent posts about what the ideal AFR should be during WOT and at cruising speeds.
This may be asking a lot, but if one of the more seasoned tuners wouldn't mind sharing some of their basic knowledge and shed some light on a few things, I believe it would help many of us that are just getting started understand what we're seeing and save time from sending PM's to know if our engine is running as it should be. Below is a list of parameters that I see logged on the OFT and if someone could explain each item along with the range we should ideally be in, it would be greatly appreciated. I'm unsure if ideal parameters change depending on E85 or pump gas, so if that can be clarified as well that would be great.
MAF Voltage:
VVT intake:
VVT exhaust:
Ignition advance:
KC learned value:
AFR:
STFT:
LTFT:
Adv multiplier:
