[stewie]

WD40 holla brother. Ok here is what i've done last night and today. First and formost. Anyone with 175 tires can not use or rely on analog insturments to tweak guino in our cars. If one has 165 tire then maybe but still analog speed really? ...anyway. The only way to get correct measurements is to use GPS. Like i said i used GPS with xx.xx decimals and closest number to xx.2x degree of error i found was 8090 VSS P/M. Today i drove to work 12 miles and measured miles like steffan did in his post on GPS and did this.

8090 VSS x 11.80 guino miles = 95,462/11.794 gps miles = 8094 VSSP/M.
This is based on 12 miles those 12 miles where very close as you can see. I will test 8094 VSS new figure for speed and miles on the way back but like i said earlier 8100 was by little too high so this seems like a bulls eye. This would be best on longer continuance trip. 8208 default number is too high as speed is off and even 8100 speed was off so 8094 for 175 tires might do the trick. If this figure turns out ok i will then test us per gal using Andrzej method. 8094 is really close or dead on. If 8094 wont be dead on i will try to test it on longer trip. Whole tank would be ideal but my GPS is phone based and i'm not leaving me phone in car. Maybe if i get really picky about i will buy for 30 days GPS and do whole tank test. I think i'm getting this now.