Limp mode or something else?

tchertel

Turbo Joe Tuned.

He got some great horsepower and torque out of this car; he gave me two maps, one for the cooler weather and one for the hot weather and also gave me two-step. However, I noticed that my 7AT never liked his tunes and this could be where the problem lies. After I got tuned, a few days late, I noticed that going from 3rd to 4th would always slip (rev high) when leaving 3rd and going into 4th; the only time it did not is when I was hard on the gas. He made adjustments and I had the tranny fluid changed (was due anyway 35k) and it kept doing the same thing, go back to Stillen and no more. The last tune I got from him the car did not slip anymore but shifts are really strong but I still ended up going into this limp mode about a month after downloading the tune. I am sure this is the connection, I just don't know why the tranny does not like his tune and the Stillen tune shifts fine.

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2014 370z Touring Sport, Stillen supercharger, cat-back and oil cooler