engine surge timing ?

when i drive this 1g at low rpm 1,2,3,4,5 gear i get a surge its like the engine cuts of verry briefly but only when i let of the gas mainly at coasting to accelerating kind of like the timing is not adgusting ive tryed turning the cam sensor 180 and it dosent change

91 rs 5 spd hacked mas can

I have the same problem with 90 talon 2.0L DOHC, T3/T4 Turbo, S-AFC.
Same as he described!!!