ORIGINAL: Kostas1
Can i ask you sth else?
I haven't used any tuned pipe in the past,so is it easy to set-up and gain the lovely +++rpm's?
Kostas,
The Hanno is twice as expensive as the purple pipe I suggested and is specially made for the OS61 Hanno engine. Nothing wrong with that Hanno pipe but the other pipe I suggested will do the job for your engine.
If you buy the purple pipe then just bolt it on and go out and fly
dont cut anything. You could use anything in the range of 12x7-14x7. Good luck