Tune touch up? Opinions?
I have since moved to Arizona at 968' above sea level and I'm assuming different quality in 91 oct gas. I also installed a new catback that is no longer resting on the floor board that I discovered that I didn't know about until now. I'm also going to be running 4.11 gears where before I was running 3.23's.
Would these new changes warrant a new tune and some more data logging? Besides the speedo being off. Since I will be putting a different load on the engine with the new gears and exhaust not rubbing the floor? Lol
Opinion please!

