Timing is set at 22 degrees at 3000 rpm. I live in Alabama in 90 to 100 degree days temperture steady climbs. I turn it off at 240 Degree. I'll change the vacuum to the ported side. I found a Zips water pump riser to try put all I have is the unit. Temperture going down highway runs 190 degree. Thank for the replys. I running at custom Performance Distributor that the reason for 22 degrees at 3000 rpm. Thanks, Leon