I will be getting a 19% pulley for my 02 MCS and I am considering getting V38 to cure the slight yoyo it has. My concern is that V38 may have altered the A/F ratios to increase mileage. I dont know if it has, but if someone gets it, or has access to the information, I would appreciate them posting it.
Thanks!

 

I posted the same questions when going to v36 and couldn't find anybody else that was concerned. A/F numbers were eventualy posted and nothing appeared to change for the worse. It would be my guess that they are not interested in improving gas mileage or leaning out the mix, just refining some of the logic.