Hi all,
I've recently bought a WRX, nice but runnung a bit rough as in not as sharp on the pick up as it should be, feels like intermittant power coming through. I use Shell Optimax and had the sparks , fuel filter etc changed. This did make a difference and it felt sharp again, but after 100 miles reverted back to sluggish. Has anyone experienced this, does this indicate ECU problems or something else, any help would be greatly appreciated!!
Thanks
Chris.