I have the 93V7 tune and my 2013 does some weird stuff here and there too. The V7 tuned seemd to raise my shift points or rev limiter but that was all I could tell it did for me.
I do believe I'm getting some spark blow out that I plan to address this week I'm just not sure if I want to regap my stock plugs to .30 or put in a different plug while I'm at it.
The most annoying thing my SHO does is sometimes when I floor it at low speeds and it downshifts to 1 then it shift up to 2nd no problem but going to third it'll hit the rev limiter and shut the car down. Anthony @ LMS believed its the TC detecting tire slip at the shifts and if I plan to go wide open throttle (WOT) then I should turn the TC off first. I think thats silly. I think it has more to do with the car loosing traction at the downshift into 1 but then acts up at the 2-3 shift point, (but not every time either). My wife drives the car too and I know she floors it here and there too I don't want to tell her to turn the TC off when she gets in the car becasue of the tune. And sometimes it does it sometimes it doesn't I can't figure out the pattern I guess it depends on the amount of traction it looses somewhere. And sometimes it gets wheel hop at the shifts and sometimes it doesn't. I think it's annoying I don't want to spin the tires at the shift so Anthony suggested I soften up my shifts. I held off to play with it some but I can't figure out the pattern. Yesterday while driving the car and it was completely warmed up when going about 90% throttle from 2-3 shift it was like the car gut stuck at about 6,200 rpms and was hesitating like it couldn't accelerate to the shift point then it finally did shift up then the car pulled hard going into 3rd.
all kind of annoying but when I talked to Anthony about al this he explained the tunes as somewhat a work in progress at LMS. Apparently they are constantly working on these tunes and dealing with the different variables that come up with cracking the computer programming that Ford put on these car. It seems like they're basically hacking into the cars ECU to upload the OEM program with no manual from Ford as to why certain systems affect other systems under all the various different circumstances. Theres a lot of different complicated things going on all at once with these cars with very little support becasue of the complexity and newness of these vehicles to what they are doing, and they want to provide something for everyone that will be safe on the car. Sounds complicated. Seems like it is what is since there's not as many people tuning SHO's as there are Mustangs and Camaros etc....
personally I've just been sitting back waiting on the Xv1 tune to see if that is the fix all tune across the board with even better performance with the added boost in the higher rpms. According to Anthony they make changes to the tunes such as the newly released V7 tunes based on what they experience with the test vehicles they drive, and they are putting a lot of work into the upcomming Xv1 tune before they will release it to the masses which explains the wait. Crossing my fingers for them to get the power / driveability / reliability / consistence / engine safety 110% right on with the XV1. I dont care what supporting mods I need for it just give me a list of what I need to go with it if that will get it perfect.
