how do i make sure its not running too lean

[samsspringer512]

I have a brand spankin new 2013 GMC 2500 and its actually a work truck so i definatly dont wanna mess it up but this truck is a bust when it comes to power and economy . the problem is i can adjust soo many things with efi i dont know were to start let alone if i am doing more harm than good ... has anyone been sucsessful tuning this kind of aplication if so HELP!

[Mike@Vengeance]

I tune them all the time with good results. If you are really worried about running lean you need to get a WB. I use a Innovate and have had great luck with those.

The trucks are very rich usually not lean so you should be safe. Make small adjustments and check your logs. A good log can tell you alot.