Air and E.T.'s

yeah I have seen huge changes. I used to race in el paso where the density altitude (da) would rane in the 4000-6500ft area. Now in phoenix it's 0-2500 and just driving from el paso to phx I dropped from a consistent 16.0 to 14.8 I have always said that it takes a good 4 to 5 trips to the track, and then you need to average the runs to get a good baseline. Make a change and do it all again. Otherwise you will not get a fair comparison. I haven't raced since june, (when my truck was totaled) but I can't wait to get out and hit it hard again once the duster is built