Maxi, raced with a EB modded Ex Tech last night (Sponsored driver too) and will tell you this from what I saw of it , It has REtarded bottom ! VERY responsive engine for sure ! As for milage... well my 21 gallon 421B consistantly out distanced it and pulled it on the straights and through the sweeper .He was getting consistant 7 minute runs and I was getting over 8 with no worries of running out BUT I am a lot smoother on the trigger and my track is one that reqires a lot of throttle to be fast! The local hot shoe took the ExTech for a rip and run'er out of fuel at the 6 minute mark LOL .
He might be fast but he DEFINATELY hard on fuel
I was impressed by the engine's performance overall though ,for $429 (I think) for the modded version , this is a nice mill . Ran cool too.
If I could get 21 gallons from one I would DEFINTELY get one! But I need to purchase one first to find out LOL.