Wan,, I use Trinity monster20%, but the last trip to the LHS they were out of it so I got a jug of odonell20%, I like it just the same as the trinity,, I dont know whats available to you in your area but the top selling fuels should be easy to find! Trinity,blue thunder, Odonell, stick with 20% you would only go up to 30% if you had a racing mill, and since you dont, I would not recomend ever running 30% in your mill, It would run like a raped ape but only for a short period of time before you were rebuilding it, dont worry about it your car will be plenty fast with 20%! buggies are built for jumping not for speed, dont get me wrong here, I love watching my buggy flyin down the straight, but I love watching it fly through the air better! as far as the break in goes! This is how I broke mine in and it worked very well for me, my buggy runs great and fires up 1st pull everytime! first, make sure your radio and trans are on, this is important because If you fire up with your rcvr off you can damage your mill before you know it, it will start full throttle and well, you can guess what happens after that! I ran three tanks of fuel at factory settings(very rich) without even touching the trigger, just let it idle and walk away from it,keep your eye on it but dont give it any throttle,its a good idea to hold on to your car when its about to run out of fuel during brake in, its going to rev up for a few seconds before it runs empty, now after three tanks you can start to give it some short bursts of throttle, about 1/4 throttle bursts should be fine,5th tank you can start leaning now, remember, when you start to lean your carb do it a little at a time!6th tank you can run the car now but make sure you do not do any WOT(wide open throttle) runs, this is not the time to get anxious and impress the neighbors with your new car, be patient here, this is tough because your gonna feel like a little kid with a new toy, and trust me, your gonna have a huge smile on your face! but that smile will soon turn to a frown if your not patient through these steps!
now after the above steps you can start running and leaning till your happy with the perfomance! you should always see a blue smoke trail coming out of your of your stinger when you accelerate and will become less as your speed increases, but should always be there, If you have no blue smoke trail at all, you are running too lean,you should richen right away if this is the case! Now , I wouldnt normally post my break in procedure because everyone has their own tecniques for break ins, this way has worked for me with 5 mills and I am sticking to it with all my new 21.mills in the future! now as far as the stock pipe and filter go, I like my stock pipe, I may have some neighbors that wish it were quieter but screw them! I like the sound! nothing wrong with the stock filter for now, you can change it out later! no matter what filter you get, keep it clean and well oiled, dust and carbs dont mix! now, I tried to be as thorough as I could with the above info, but as you will see when you get started there will be some frustrating moments, your gonna expereince a few things like compression, wait till you start pulling on that thing, this aint your daddys lawn mower! remember this too, your starting at factory settings(rich) you may go through a glo plug or two, have some spares on hand, If your car dosnt start at all dont get pissed, just breath and figure out the problem,all engines will start! be patient and leave what ever temper you have at the door, you can't do this pissed off, trust me, it just dosnt work that way! Now get out there and learn to drive that damn thing! but dont launch it just yet! that will come later!lol!:redbuggy: