Hello all, I'm Marco i'm from Spain and before all, sorry for my english. I've had a differents mopeds with differents performances during my life. Right now, i'm making the most important proyect that i've done. It's a Piaggio zip 99 with a Skipper 150 2t engine, it was fixed on my moped and it was running great. But, in the lastest months i've get the project to another level. My zip it's now with a 172cc malossi cylinder, with 180 malossi exhaust, malossi gears transmission and i've been developing a proto intake. The new intake for this engine, i've print this with my 3D printer.l it's an intake with rd350 reed valve and with 28 polini carburator with a pipe that connect the carburator to the stock skipper filter. In spain it's difficult to find people who tunning theirs moped and, the people who do it, used to be kids. it seems that this forum will be worth for me and i'll learn a lot of things.