I'm tryin not to let the secondaries open up as much, if it can be helped. I do go above 4000, but not for as long as I used to (don't want carbon build-up). My last tank was about 27.5 mpg, but I don't like drivin' like a grandma to get it, LOL.
Scott

Scott Mabe I WILL be Phil. 1999 Contour SVT, Tropic Green BAT kit, K&N RU-3530+MAF, Magnecore 8.5mm, some audio goodies, Hightowers, Knauberized, tatoo by Parkedcar.