i have a 2008 f150 XL 4.2L with a six inch suspension kit and it has 35x12.5x17 inch tires. i just bought a hypertech max energy programmer and want to adjust the rev limiter but i dont no what to do it to. It goes up by intervals of 100s like +100 +200 etc until +500 and then it goes to -500 and honestly i dont know what to do any advice would be appreciated thank you

 

i want to get the best performance that i can out of my lifted v6 haha

 

why?

 

wont adjsuting the rev limiter give the truck better perfomance or no ?

 

no. you arent making power past the existing max adjusted rpm. actually, those big tires are killing your performance.

 

welll i understand that but i was just wondring becasue i dont know what adjusting the rev limiter will do

 

it will adjust the max controlled rpm.

 

wow.

 

ok so you recommend not to change the stock rev limiter settings

 

just sell the hypertech crap and get an SCT tuner. plug it in, follow the directions, go drive. its a vehicle, if you dont know what adjusting the RPMs will do, dont do it.