I recently bought a 2005 Equinox LT AWD and I am only getting 13 MPG. I have read up on some of the aftermarket mods to improve this and found a "chip" that will increase it to what they "guarantee" will be an extra 10 MPG. Only problem is that I cannot find where the ECM(computer) is on my car. Anybody happen to know anything about the location of the ECM? And any other suggestions would be greatly appreciated. Thanks!