I'm getting ready to purchase my first tuner for our Mustang. Currently, I have an S&B CAI on the car which does not require a tune. Originally, I was thinking about just buying a tuner to go with that, so my investment would be about $380. I have come across an opportunity to purchase an used JLT II with an used Xcal 3 for around $350. I think I might be able to get him a little lower. I'm in the process of finding out if his tuner is compatible with my PCM (which I am just learning about for the first time). It appears the only set up difference between our cars is the gear ratios, which I should be able to adjust in the tuner, right?
Assuming that it's compatible, should I go with the JLT II and Xcal or should I stick with my S&B and just pick up a tuner? Would the JLT offer any significant difference in performance?
Assuming that it's compatible, should I go with the JLT II and Xcal or should I stick with my S&B and just pick up a tuner? Would the JLT offer any significant difference in performance?