Dont let anyone get you down about your engine...I have been using the Hyper .21 8 port for almost 5 years. I get 10+ gallons on every one. It holds a tune well makes a ton of power and its IMO one of the best $100 engines on the market. For future reference any engine that has 5 plus ports will always be a top end engine..so the 8 port is also. It likes the Mcoy 8, or 59 plug, and works great with the Ofna, or Dynamite 053 pipe, which will also give it some more bottom end grunt. It is a screamer on long straights and will keep up with $300 engines on any straightaway. It does not get good runtimes... 7-8 minutes in buggy maximum...keep an eye on temps, and smoke from the pipe, if you overheat it, it will Flame on you, and become tricky to tune. break in is about 5-6 tanks of fuel, then race tune it, and beat the hell out of it..You will not be disapointed in this engine, people still come up to me today and say "what the hell engine you got in there"..As you become a more serious racer, as I did...you will find the Hyper 8 port makes a great practice/back up engine while you waste your money on a bonafide "racing Mill"...why I have no idea, but we all do it