Its 2-1/2 years later and my daily driver still runs well with the XFI cam. Around town with no unusual driving techniques it gets a solid 44mpg. On a recent trip of 400 miles each way it averaged 54mpg just by holding the posted speed limits. On the same repeat trip 2 weeks later but in a hurry to get home it averaged 49.5 mpg with speeds exceeding 75mph at times.
XFI cams should be all the same specs. I put syntheyic ATF in the trans and keep the tires around 35psi. Woops, no Singh grooves in the head yet. I will have .040 removed from the head when I do this but the car is so reliable as a daily driver that I don't mess with it. I love what this cam did for my car.
For those of you who remember, the 70mpg diesel Metro sits in storage, unable to be registered in the Republik of Kalifornia. It may get a mid engine 3.8 supercharged Olds V-6 sitting on my engine stand if I feel cheeky enough.....but the 6.5 turbo diesel going in my boat has my full attention right now. Click here if you want to see it...