I am having the following issues :
When accelerating in gears 3-5, the engine seems to sputter, as well, I can see the boost levels dipping while this is happening. My friend who was driving behind me said that he seen it backfire. The whole car jerks, sometimes really noticeable, other times its very subtle.
This is a new car to me, it is a 2002 WRX with 266000 kms. Previous owner did timing belt at 180000kms as well as a pro-tune, and complete turbo-back exhaust.
I have not done any testing as I do not have any equipment for it at the moment. I will check for CEL's when I can.
Also, another problem I have, is the car's ABS was turned off, the previous owner bought it that way and has no idea how it was turned off.
If anyone can give me any insight, that will be fantastic.
PS. I have been looking around for the issues on the forums, but no issues like mine?