Just wanted to give some honest feedback on a couple things I been running this year on my MP9 TKI3.

1. Thunder Innovation 4 shoe clutch and shoes. I havent ran too many 4 shoe setups besides the stock Losi one I had when I ran a Losi last year, besides that mainly 3-shoes I've always ran... anyways I cannot believe the overall performance in general. Its got a good engagement throughout the powerband and the wear is excellent. I have now gone through 2 gallons(keep in mind the 1st gallon was mostly breaking in the engine) but since then I been running pretty consistently on the weekends and they still have plenty of life left.

Second thing....

The Arrow 5port has been really good to me. I barely have to adjust the needles throughout the day. If I do its only a couple hrs. Its been pretty consistent so far and its definitely a potent engine compared to the very high-end counterparts out there. I have more than enough "pop" all throughout the track and for the price...well you just cant beat it. I know the 1st gen Arrows weren't the best...carb issues...tuning issues...cases cracking...bearings leaking...well I think Arrow has solved all those problems. I haven't the least bit experienced any of these issues whatsoever. I run a 6.5mm carb restrictor on mine with the VP-PRO Ultra Hot P3 plug. I think I'll be getting another one of these engines for sure. I'm more of a regular club racer and I attend one or two big races a year so for me this engine is very practical.

Well thats my input...RACE ON!