Visit me at: http://www.ericthecarguy.com/ See Part 1 http://www.youtube.com/watch?v=rsGTeWayqIU Vacuum leaks http://www.youtube.com/watch?v=9CPqbaSgcok+ Voltage leaks http://www.youtube.com/watch?v=x-U9WqJfaJs Power Balance http://www.youtube.com/watch?v=bAOmUjAjNjE Compression testing http://www.youtube.com/watch?v=X_tbksFYhl4 Leak down testing http://www.youtube.com/watch?v=WgrfT0LFMhc&feature=relmfu Here we are with part 2 of the Subaru Performance Series and as you can see we still haven't found the issue but to me I feel that I've eliminated a lot of possibilities and I feel I've narrowed it down to a problem in the driveline in fact the next part of this 'series' will be changing the transmission fluid and filter as well as the fluid in both the front and rear differentials, I'll post links to those after they are uploaded. The point of the series however is to avoid throwing parts at a problem like this, don't get caught up in replacing sensors that you don't have evidence are bad it gets expensive and is hardly ever effective. If you have a performance problem start with any check engine light codes and repair those first, if you don't have any replace basic maintenance parts like plugs, wires, air and fuel filters and THEN start looking for other causes, I feel you'll be more effective with that approach instead of putting a new sensor on because it fixed your friends car. If you have automotive questions the fastest way to get a response is to head over to my website and forum as I no longer answer YouTube comments and it takes me a while to get through email these days, here's a link. http://www.ericthecarguy.com/forum/default.aspx Stay dirty ETCG Due to factors beyond the control of EricTheCarGuy, it cannot guarantee against unauthorized modifications of this information, or improper use of this information. EricTheCarGuy assumes no liability for property damage or injury incurred as a result of any of the information contained in this video. EricTheCarGuy recommends safe practices when working with power tools, automotive lifts, lifting tools, jack stands, electrical equipment, blunt instruments, chemicals, lubricants, or any other tools or equipment seen or implied in this video. Due to factors beyond the control of EricTheCarGuy, no information contained in this video shall create any express or implied warranty or guarantee of any particular result. Any injury, damage or loss that may result from improper use of these tools, equipment, or the information contained in this video is the sole responsibility of the user and not EricTheCarGuy.