help with exhaust problem

[Guest]

hey guys i have a gilera dna 50 gp experience and have just bought a new viper exhaust for it it was advertised as a sport exhaust and so everyone says it is aswell

i eventually put it on and now can only go about 30 maybe 40 kmh on a straight bearing in mind with stock 65 to 70 i have no idea what to do.

downhill is a diff story though itl go up to about 96kmh so i just dont know? same with just starting off for first 20 secs u get on it after leaving it parked for awhile it will shot like a fricken rocket but then u start to feel a drag and get brought back down to 30 or 40?

and as for up hill HA ur better of walking and in many cases i had to talk about embarrassment does anyone have any solutions??

Thanks

Sam

[Guest]

oh and forgot to say went to garage and he didnt know either?

there is no holes or anything in it either

[Colin the Bear]

Give it a service.

Any bike will need a carb tweek after fitting a sport exhaust. Maybe a colder plug

[Guest]

Give it a service.

Any bike will need a carb tweek after fitting a sport exhaust. Maybe a colder plug

thanks mate was told today that it was a clutch vertabrator roller or summit like that lol