Sup guys just here having a important question, I just upgraded the k and n and was wondering do i have to retune my truck again. Also another question, do you have to keep retuning the truck everytime you put some performance on the truck? if anyone knows, need some advice thx.

 

No.

T-stat, shift kits (depending on what you are looking for I guess), tires, gears, cam, electric fans, n2o, blower, etc yes.


Intake, exhaust, plugs, wires, and free-mods things like TB Bypass, etc. - No

 

i agree. you can do a lot of mods before you have to retune. bolt ons you will be ok with. any major mod and i would do it. what tune do you have now? cause i know that nelson once you buy the tune then you are set. you just have to wait to get it back. good luck and welcome to the site.