125cc Sportsbikes Forum banner
1 - 1 of 1 Posts

·
Registered
Joined
·
1 Posts
Discussion Starter · #1 ·
Hello, hoping for some experience with exhaust, got A perfectly running Yamaha dt125r, 1989, comepletly stock, very lo mileage, engine, piston ect. in good condition, (factory unrestricted 30 HP model), purchased and fitted new giannelli complete exhaust system on the bike, fits perfectly, and sounds great, but bike lost at lot of midrange power,(YPVS adjustement correct), engine revs higher thoug, topspeed is I belive also a bit higher, but when swithing back to stock exhaust, bike pulls A lot better, no signs of poor jetting, bogging or anything else, just low midrange power. Anyone tried similar issues ? Or is gianelli just not good enough?
Regards Torben.
 
1 - 1 of 1 Posts
Top