I am not a professional tuner. I do it for fun. I can work on my own cars, I've always wanted to tune my own cars. And now I can. Tuned my Gen 3 Vette, Gen 4 G8 and now working on my buddies Gen 5 Silverado. I understand the process and understand how to do it. I've always been curious tho, why can't you run MAF only?? I know technically you can but why bother with VE and VVE altogether? Specifically Gen 5? Pros, Cons? Don't want to sound like a total noob with all the pros on here. Just curious. Thanks in advance for any advice or knowledge.