Yeah highway counts. I was making 310rwkw out of my R33 and dont think I ever saw 500km to a tank. I used to think they were good when kept off boost and just cruised around but this was short lived when the car came from the workshop. You might say I had a bad tune, but Ill tell you that 3 different, well respected tuners have tuned the car on different occasions.
p.s i think we are getting a little off topic, Loving this build up, keep the pics/vids coming!