The D52 is a bit smoother and a little more top end. I ran a D52 in my car last weekend. I lapped mine, 2 tanks on the bench (alot of heat cyles) Went out for practice and started tuning on it. Didnt miss a beat all day! I forgot to change the plug so I ran the stock T3 plug all day too.

Kendall ran a modified R8 in his buggy (in video above) And a stock R8 in his truck. He Tqed both truggy and buggy at Mnrc rd1 and ended up second in both. Fuel mileage was great also as the heats were 6 min. and had lots of fuel left.

Rex