hello forum again. This am left Taos at 7.00 am OAT 32 c at ground climbed wot 2700 38 inches 8 minutes to FL 190 FF 44.5 GPH highest CHT 410 EGT 1500 forgot to add low boost engine happy once leveled off leaned to 17.1 GPH with CHT down to 350 rapidly and EGT 1500 with TIT2 1680 OAT 8 farenheit running smoothly 25 minutes later noticed low fuel boost not being on, turned it on and less than 1/2 minute after the dreaded little "bang" at the bottom of the engine and engine running rough a bit, so turned off low fuel boost and 1 hour later average speed 280 KTS landed at home KHQZ with no problem. Any savy wise comments regarding this darned matter? Low fuel boost makes engine run rough and reproduced detonation described before. Once leveled RPM 2530 and 31 Hg manifold pressure prior to leaning to above settings. Will appreciate any comments