got a 09 lariat 4x4 5.4 looking to buy a tuner but i dont know what is the best one to buy. i want more horsepower and im adding some 295/55r20 nitto trail grapplers so i will have to program the speedo to compensate if thats possible.
im a noob to these things, they cant hurt my truck in anyway can it?
anyone have any suggestions or personal experience?
thanks for reading

 

How many of the 13301 threads did you read?

 

junk/junk/junk

check out a sct sf3 from mike troyer.....