how much air does a BHAF flow compared to the AFE PG7 stage one. i recently installed this turbo and injectors and my towing temps are higher than i think they should be. i have to down shift to 4th if im on any hill for longer than 30 seconds or i will be around 1200*. this is towing less than 4k in a 6x12 cargo trailer @ 60-65mph. 3. 55's w/315's