Recently i got my 07 wrx tuned by yumi's in santa clarita, I am pushing 20 psi and do not have any problems when going through gears 1-3. Some times have the problem in gear 4 and all the time in gear 5. I do have an exhaust leak because the gasket connecting the downpipe to the muffler is going bad. Could it be a bad boost controller that is causing this issue. And when doing a pull in 4th and 5th gear the p0244 code pulls up, every when doing pulls through every gear the code pops up and causes the car to jerk in gear 4-5. Very confused as to what can be causing this problem.