I have 2 quarts of Byron Race 3000 plus a 1/2 gallon of break in fuel through my Roma and it just gets faster every time I run it. I did change the pipe today from a Losi RE10 to a Nova 41001 and 9886, what a difference. Its almost to fast on the top end, granted I was just running it up and down the road, and not a track. I am going to try to get to the closest track this week (its about 2hrs away) i know there are a lot of guys who run Novas there and can help me get a good race tune on it, but I think I am pretty close, on a high speed run up the road I am hitting about 240 to 250 degrees, no funny noises, and a faint but noticeable smoke trail. The plug still looks like new, when I pull it and put after run oil in there is a brownish tint around the threads and on the very bottom but it wipes off easily, no burnt spots and its not dripping fuel, just moist.

Now I am torn as to which motor to put in my race 8Ight-t, the Roma is excellent, but I wanted something different, I have a OS .21XZ-B Spec 3 ready to break in, but I might have to get another Nova. I was thinking a Vir-tus 7, Mito 7, or Bonito 7. I am leaning towards the Vir-tus, but any help is greatly appreciated, also any info on pipe and manifold choices would help, I am very new to nitro,and I have allot to learn.