My search attempts were not yielding the results I was looking for so I apologize if I missed this elsewhere. I'm looking to switch from stock 4-4 pipes to a Mac 4-1 system. My stock pipes are pretty shot, and the Mac 4-1 seems like my best option at my price point. I'm open to other suggestions, but for the sake of discussion, it'll be a Mac. I know this will affect the back pressure on the bike, and the 78's run lean as it is. So what jet adjustments should I be looking into?
Here's what I got...
78' 550K
.5mm overbore
PD46 carbs
stock airbox
Thanks
