VTR 250 with fueling issues

[knee-down-nazi]

Hi all,
Just did the Rimutakas today and my bike backfired a few times.

Its got a RPS pipe and i suspect its running LEAN.

Anyone had any experience on tuning them for a/m pipes? eg needles etc

BTW im running 91 octane, and read all the threads on the fuel I should be using.

thanks
Rob

[CookMySock]

Crackle-pop backfire is normal for the vtwin on overrun. Is this not what is happening for you ?

Steve

[hayd3n]

i had that only when dropping down a gear down hill never any other time

[knee-down-nazi]

u mean the rev limiter, yeah it does back fires then but also when its bellow red line