Originally Posted by n.e.r.d

cjm1126,

What pipe are you running with your JX21?
I have the EBMods button too, running the Ninja with the EBMods pipe.
Struggling to hit the 9mins mark..
I guess what pipe you use does make a lot of difference to runtimes..

Btw, guys..
I have a JP B5N mod, about 4 gallons old.
Do you think it's worth replacing the engine's p/s + conrod and hoping tt the B5 will get abt 9min runtime?
I'm thinking of getting a std P5 p/s to save on cost as the JP's p/s are too expensive..
Worth rebuilding the B5? What are your opinions?
And what is a good mileage pipe for the P5 series of engines?