General Changed location now speed density tune is a little off!!

[selmerguy]

I just converted to dsmap and did all my tuning in Austin, TX. I am in the army and have to go to school it Ft. Leonardwood, MO and my tune seems to be a bit off. I decided to do a few pull here to make sure my car made the trip ok and I saw knock. I originally had my car tuned to 0 knock and I saw 21 degrees of timing at 7000 rpm. Now my car has knock at about 4000 and it does it every time. I saw 16 counts. I checked out my logger and I am running about 12.3:1 AFR at 4000 when I was at 11.6:1 in Texas.

I don't know how many people actually travel with their DSM's (scary thought I know) but this is something to think about. I never thought such a small change in climate could do so much. I could see moving to Denver or something but Austin is at 550 feet above sea level and here it is 1119. Pretty cool huh?

 

[Zenja]

That's odd. I think that theoretically a change in altitude shouldn't change the tune, even with the speed density setup. That's not even a big change in altitude.