I am considering buying the NovaRossi Plus 21-4btt (or possibly the Clockwork mod version). I have been doing some research on the pipes for this motor, since it appears to use different pipes then an O.S. Speed. These were the pipes I was considering, but what would be recommended for a person who likes low end grunt but also wants great fuel mileage:
Novarossi pipe 51020 (EFRA 2096) with the NovaRossi 41029 header (same as 41021)
NovaRossi pipe 51016 (EFRA 9901) with the Novarossi 41030 header (same as 41020)
Losi RE10 or RE11 pipe
Ofna JP3 pipe
O.S. 2050 or 2060 pipe

From those who run the NovaRossi 21-4btt engine, what is the best pipe combo for this motor and why? Any pipes I should stay away from?

On the Clocked version I recommend the 9886 Super Strong and the 41001 manifold.....IMO this combo provides the most well balanced powerband of all the pipe and header combos, extremely strong low end grunt with a terrific top end runout....its Just a wicked running combo, crisp and snappy trigger feel with a fantastic throaty exhaust note.....

The Losi RE12 is a better bet than the 10 or 11. Its similar to the 9901.

I spoke to Drake about what he runs, which was a 9901. I have never seen someone get runtime like he does in race conditions.

As Neal stated the 9886/41001 will be the strongest. The clocked btt has a lot of bottom/mid power. It's best throughout its powerband with that pipe. It will work ok on shorter tracks using the 2096 or 9901. Topend suffers though. Mileage may be better. It does do best with the 41001 on the clockwork modded engine no matter which of those 3 chambers are used.

So is the 41001 header similar to the 41030 or 41029, as since I have a Mugen MBX6R and headers can be a pain to install in the narrow chassis.

There's many reasons for that, and it isn't just his tuning skills! No matter what batman cereal you eat for breakfast, your not going to get the same run time with a stock Novarossi with off the shelf fuel as Drake's engine/fuel setup.

41001 will fit your Mugen. It's a short double bend manifold that looks like the manifold that comes with the OS 2050 pipeset. Almost identical to ofna 086 manifold. Look on a website that sells pipes and you'll see.

This

You were there Chris, how do you think he got 14 min in the Exp Buggy main ?? It was not like he was back pedaling it on the straight, he was full wood like everyone else. With the same motor/pipe combo Drake runs (Even with him tuning it) I can't get better then 10 min. Big advantage in a 25 min main only having to do one stop to everyone else's two..:tire::tire:

I'm sure the engines he runs aren't off the shelf engines; Novarossi rivets the back plate on his engines so no one can open them. Besides from that, I think he uses some extremely low oil content fuel, something like 3-6%, not sure about nitro percentage. Also notice how he is always smooth on the throttle? If you were to punch it the engine would probably lean bog because its lean everywhere in the power band. Even with that, his engines come off at normal temps because of the low oil content fuel.

you could always just ask him instead of spreading speculation.

Can I run a nova p5 with a werks 2013?

Very nice but ridiculously focused toward low end power

If you were to ask him, he would just say 30% Nitrotane. At that level, his advantage in run time makes a huge difference, so they won't tell everyone exactly what they use. And this isn't speculation on my part, its from other experienced racers going to the worlds told me, along with people who have driven his car. Drake's pit man says they get 60 gallons without any replacement parts on their engines, so I'll set that as my goal and see how far I get! :D

Don't wanna lose that much top end if I don't get the 9901

What about a re11? Trying to see if I should get another b5 pro for 150$ or just get a p5 and use a pipe I have already. This will be for a truggy.

For buggy I probably get a p5 or maxy with a nova pipe