Flashing ECM
 

I read somewhere that a guy had his 02 reflashed and it ran better. Do you think it is worth 110.00 bucks

find someone with a smarty and have them program then unprogram your truck , this will give you the newest version of stock ecm setting including factory high idle

I did mine and it made it run much better cuz it had a super chip in it too I guess

I was lucky enough to have a pre Smrty program for my truck. Ran much better and had more power than post Smarty.

I lost 35Hp uninstalled Smarty and at a lower RPM. Flash to old program, power and rpm came back.

Dave