I've been fighting with a gross misfire and bad studder at about 3500- 4500rmp for at least a month now.
Car is a 2004 wrx wagon.
Person I got it from said it's a jdm swap
No name turbo back exhaust
Catless down pipe
Rev 9 turbo inlet
Wabro 255lph fuel pump
After market intake not sure on...
I have a 2006 Wagon WRX with 85k Miles on the clock.
The car is all stock. It has been running a little rough at idle and stutters under acceleration. After a stutter or two the car seems to pick up and pull pretty well.
I have read lots of threads about similar problems and decided to check...