How does this tune feel?
Simply great! I drove from Seattle to Leavenworth, WA and back and had a 27mpg average while doing 65+ mph pull most of the way. My S4 pulls hard for being on KO3... harder than it ever has. Keep in mind that I have APR tune and a MTM tune, all I can say is this Motoza tune is heads and tails better than any of the others. Which is not shocking as must S4 owners will say custom tunes are always going to be better than "tune templates" like what is offer by GIAC or APR. The simply fact that is custom to my setup is really bring my S4 back to life.
Well Motoza offers a Stage 1+ upgrade, but it requires using 550 CC injectors, but the tune itself is only $40 upgrade. I could do a E85 tune if I wanted, but there is little to no E85 stations around the Seattle area. So I'm out of luck with that. I think I'll get the 550 CC injectors later this summer and do the Stage 1+ upgrade. This should pump out another 20-40 more HP and 10-20 ft-lb of torque. Nothing huge, but it does prepare me for future K04 or other hybrid turbos.
In Summary, if you looking for a new tune, or maybe you were in my boat and didn't know what tune you were running, I can't recommend enough about Motoza Performance. The tune is impressive and the service and support and honestly the best I've ever experienced ever in my life. And best yet the price is hard to beat.
Price: $349 (as of June 2018)