throttle input all over the place

[Dolphin S4]

I recently had my car JHM tuned it's a 6 speed with catless down pipes and FI catback. Anyways I love the tune but I started noticing sometimes when I'm half throttle give or take around 3k and climbing the car starts jerking all over the place like not smooth at all the throttle wigs out and it's all over the place while accelerating.

I shut the car off and turned it back on and it seemed to go away but the next day the same thing happened.

Any ideas ? No CEL on dash

[S42RS4]

Have you done a throttle body reset?

[Lucca M]

Is it 93 tune? They are known for misfires if your gas is slightly less than 93

[Dolphin S4]

Is it 93 tune? They are known for misfires if your gas is slightly less than 93

I'm on the 91 tune but you hit the nail in the head! Turns out the gas around here is garbage found a shell v power station and filled it up and bam ! Working amazing again

[Lucca M]

Yeah man thats the thing. Its not gas being bad. Its amount of water in it that kills.