Originally posted by rodrigo1508
I normally use 30% from powermaster because thats what my LHS carries but now they got some 40% odonnel and I already bought it so what can I expect from going from 30% to 40%. Also how good is this engine I am planning on using it in my new NRS-RR12L5. Or should I stick with the 30% I havent opened it yet so I can always change it.
stick with 30% unless you are a master tuner that can tune that motor to run with 40%, also your engine life will decrease with the 40 %.