.Last Sunday we were dyno tuning Dustin Unverdorben”s brand new F7/ F9
EFI, a complete sled purchased from D&D, F8 stroked to F9, with
monster twin pipes, fuel pressure booster, pac, and eqaulizer.
After doing part throttle high load midrange we saw deathly lean A/F
ratio.We jacked up base fuel pressure 10 psi higher thn the pac gauge
read–the dyno now read 45 psi, the pac gauge was pegged to 60+. Those
pac gauges read way too far off of our dyno gauge. Regardless, now the
engine was happy in midrange and with the very excellent equalizer
tweaked to perfection we made 191 HP at .68 lb/hphr or therabouts.
Chicken Jim decided that this was too much for pump gas, and we bumped
equalizer to create 188 HP at .70 plus. I guess that should be fine!
Dusty please limit time at WOT to 1000ft!
I will post Dusty’s F9 numbers this week.
Turbocharged CTEC 800 “Solid Legend” turbo system on <93 octane
designed for high altitude riding, this system is quite happy on a bone stock CTEC 800 here at 1000