Boost problem?
On the way home from work, car was nice and hot. Gave it a boost coming off the round about, soon as it hit 6k there was a violent jerk forward like the boost cut out and then it came back, did it a couple of time, had a quarter of a tank in the motor, cars an 02 sti impreza.

Any ideas? Tried to googling it but to many diffrent things coming up

 

Try it with a full tank of fuel. I have the same below half a tank

 

Fuel cut?.

 

Yeah mate, have you tried with full tank. I think it's quite common when your fuel is below half a tank. Especially when coming off a island