Hi,

i am running a nova 4btt with a sirio pipe as it seems to provide a sweeter and smoother power band plus better fuel consumption. plug c6tgc. average ambiance temp 80 - 100 F.

i have a nova 9901 pipe with 41021 but the combination does not feel as lively.

would appreciate if i could get someone could share their experience with the different combination of nova pipes/header to suit the 4btt n bonito.

thank
kelv