Chipstien,
I went back to stock box and K&N. Trying to find cure for EGT's. Never really noticed any higher egt's with stock box. Went back to be sure and did a little test. Same hill,same day, same temp, different setup. First ran WOT with BHAF and comp on 3x5,1350*
Then put in stock box with a freshly cleaned and oiled K&N and ran from same spot. 1310* I don't know if it really matters to save 40* but I think it is worth a try. I pulled off at 100 mph just to make it the same. only variable was letting truck idle to switch out filters. Would it matter... ... ? Greg