I'm just finishing a twin turbo silverado build and am now doing my research on tuning this thing. I'm looking at using a COS system ether 3 or 5. I have read the tutorial about COS3 and it seems like it will meet my needs. Any benefits to running COS5?
When I start tuning this (hasn't been started since mods) should I start with the MAF on on the stock tune then go to a COS and start the SD tuning or just go COS right away and with or without the MAF. I don't plan on running one once the tuning is done.
Mods: 60# injectors, cam, 2bar map sensor, and twin turbos.
Any starting help is appreciated as I'm new to EFIlive