Ducati Sporting Club UK > Model Specific - Discussion, Technical Problems and Help > Supersports: SS / SuperSport / Supersport 950 > Exhausts

[skidlids]

Originally Posted by bradders

there is so much conflicting info and opinions on this, when senna kindly made one from bits I had last year I lost 6bhp, seems 2-1-2 works bset on a Ducati and most twins, altho the weight saving may offset the cpl bhp it adds...altho there are some 2-1 that are bang on the limit so who knows...

My bike runs a 2 into 1 using standard 900SS headers with the front cut before the splitter and then goes into a 2 into 1 coolector that is a direct copy of the standard 583 collector but in a larger diameter to suit the 40mm headers.
The collector was made by an exhaust specialist and all welds were gas purged giving a very smooth flow through the collector, where as Kew was trying to weld up a exhaust using three different stainless exhausts using Oxy Acetylene so god knows what it did for exhaust flow.

Dallas's 2 into 1 from 2010 also worked well, so much so that the can had to be changed to drag the max bhp down a bit while bumping up the mid range, His 2011 2 into 1 was pants.

A good exhaust is designed not just thrown together and Ducati spent a fair bit of time designing theres so its easy to make things worse but harder to find improvements, but as Ducati have to consider factors to do with mass production emmisions etc there is always room for improvement for a race exhaust