Hi,
Think the Mugen engine is a lot like the Serpent NovaMega engine.
Those engines are fast and reliable. The Mugen engine has also won a lot of races.
I have seen both of the engines raced, but the JP is that much faster!
It has incredible power, and the top speed is by far the highest I have seen yet in a .12!
This is not only done by JP, a lot of other manufactureres are not building new engines every year.
The Mugen is still the same, as well as the NovaMega, and the R&B.
Engines like a NovaMax, or a IDM are hard to get so there isn't realy that much competition.
I think it's a plus having a carburator wich can be adjusted only on a few ways, like the JP has.
A lot of people have fast engines, and a bad setup of their engine.
This can be avoided by using the JP carb.
A large backdraft of the JP is it's durability.
They are not ass durable as other Nova Rossi based engines.
But wath the hack, most people buy a new engine every year.