For seamless boost changes. If you setup the bike right, use good components, get the tune right at a conservative pressure the damn thing never skipped a beat. It would bracket race in the 80s pass after pass. HOWEVER, that's not my style. We would up the boost and up the nitrous every pass. So each time you had to make a good calculated guess at the fuel. Sometime right, sometimes wrong. You don't always get a ton of passes to fine tune what setup you had, and as the day goes on the bike would need to be faster. Motor was a bone stock 350. Stock everything.