Nice choice of Ski !
I spoke to my local dealer and he said yamaha can get funny about some modifications and can refuse cover on warranty if they deam the modification to be at fault. Better safe that sorry you know
Id personally, if you are worried about losing any cover, one do modifications that can be swapped back to stock if you have any issues before its returned to the dealer. Id avoid the thru hull for now as its pretty obvious to the dealer , but the filter and stuff are simple swap jobs.
what yamaha dont know cant hurt
Might be worth taking out your flash arrester in the intake too, its kinda a recommended mod on the N/A 1.8. there are loads of tutorials on youtube. It sharpens throttle response, I noticed quite a difference.
hope this helps
Enjoy the Ski !!
- Its better to have lived one day as a lion, than an entire lifetime as a mouse -