If i was you to start of with i would personally go for the Fastrax Enduro engine it is fairly cheap very reliable and easy to run in and tune;
I have ran these in my rally x since they were first released and i had no problems with them as such all i have done is replaced the bearing in the one engine and that is it
I do not run the engine and pipe set to be honest
1st engine i run the technopower Pipe
2nd engine i run the JP -4 Pipe
3rd engine i run a EZ POWER Pipe
All of these run faultless on any of these pipes and fuel economy is around the 10 min mark
Keep your eyes peeled as they will be up for sale shortley due to a new sponser for engines for this season of my racing
__________________
|