Posted for "George Braly" <gwbraly@gami.com>:

 Andre,

 Please download your engine monitor stored data and send it to me.

 It is much easier to evaluate with real data.

 Regards,  George

"""
 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
 
 andres 18AK
"""