Gemballa exhaust increase in BHP?

[Patrick L]

I have got one of these on my new 993. It sounds great that I do know but does it add to BHP? I would guess an extra 10 or so.......

[burzel]

Hi
the silencer boxes make very little diiferance to power,unless you alter the fuelling for the free flowing siencers.If you got 10 bhp you would be doing well,probably more like 2 or 3 bhp. or dare i say ,you may end up with less power.
Burzel