Hey

I currently own a 99 wrx, when i'm cruisin normally it shakes and looses power in low revs, and it takes time for it to go normal. then finally if i put my foot down it completely throws itself forward like crazy.

Even if i'm crusin the freeway at 100km/h in 5th it'll start shaking (it like a loss of power) say i put my foot down when this happens, nothing happens it very slowly begins to shake less untill it reaches about 3000-3500 revs, which is when it takes off.

Sometimes in first when i take off quick at the lights and stuff and put my foot down it almost cuts out for a while, like literally it just rolls as if in idle, then after about 4-5 secs it will completely throw itself.

can someone please help me, I had the car serviced and it didn't fix the problem. Also what petrol you reccommend.

Thankyou, please help me