Modern Vespa

Hello everyone
First of all, let me apologize if my English is not good
I'm using a Vespa GTS 125 with iget engine, now I want to upgrade it a bit more power. I did some research and found that using the Malossi kit is not durable and only has a lifespan of about 20,000km.

So I'm thinking about upgrading to a 150 iget engine by replacing a new cylinder.

I want to ask if this option is okay, in terms of operation and durability. And what parts need to be replaced when upgrading from 125 to 150?

curious? well if you change the cylinder then you need to also replace the ecu (or use a piggy back like the forcemaster)

Only cylinder and ecu? No need to change anything more? If just that, it's quite easy, i'll do it

don't know.

have you studied the parts manuals to see what the differences are?

also are you planning a stock oem cylinder or a malossi / polini cylinder?

I think stock OEM cylinder is suitable for me, let me check parts manual of both 125 and 150 version