I have been using the GRP #6 plug in my GRP and it really works great. The motor comes off at 205 every single time. In the last 3 race weekends I have not had to touch the tune at all. The motor works great. 3 race weekend 3 A mains 45 minutes each, and still comes off at the same temp. Even after running the 30 minute B main then bumping to the 45 minute a main the motor keeps on trucking along. Not a single flame out in any main or qualifying. I could not possibly ask for any more from a motor, the thing gets me 10 minute fuel runs at race pace.

I am very happy with this motor. I am pretty sure my losi buggy is very happy with this power plant as well.