jknappen
Senior Member
Just wondering what all mods I will need in order to run the hemifever tune. What exactly is the hemifever tune. All I have is a catback now would like to do some of the basics like TB, drop in filter, 180 tstat and catch can and possibly some long tubes way down the road. can I run the hemifever tune now with just the cat back or can I tune my truck with either the 87 or 91 tune and upgrade to the hemifever later on? most likely will just be running a rancho quick lift kit as I dont want to mess with spring compressors and **** like that. stock wheels and just a touch bigger size 20 inch tires. not looking to race or offroad just want to wake up the truck a little and get better performance and what not.
