Invanising and Exhaust

[Exupnut]

It does indeed. Good explanation. Thanks mate.

[Kosmic Kartman]

I chose it because it looks and sounds better than kosmics

 

In your dreams.

It does have a bit more poke with the baffle out but it's not like I need the extra horses being the size of Dani Pedroso. I have run the SP without the baffle but IMO it's very loud and does seem to attract a bit more attention. But for you Exup I might remove it the next time we're out again. Might even let you have a go. Maybe.

[Exupnut]

Oh no... Kosmic's pissed :-)

[Captain Haddock]

I have a delkevic on my FZS600 and didn't realy notice any real performance difference with the baffle out so put it back in, did notice less people shaking fists at me with it in.....

[PieEater]

I have a delkevic on my FZS600 and didn't realy notice any real performance difference with the baffle out so put it back in, did notice less people shaking fists at me with it in.....

I think it's important not to miss the point - we're talking about bikes that have had their fueling system modified by means of an Ivan's kit. I think it's fairly safe to assume that Ivan developed these kits around bikes with free flowing unbaffled exhausts which is why you can see a detrimental effect with a baffle fitted. You can't expect an unmodified bike to perform better with the baffle removed in fact as has already been mentioned this can have a negative impact on fueling and performance.

As for noise I'm not a fan of overly loud exhausts especially in built up areas as I think they do a lot to damage the reputation of bikes and bikers in general. Because of this I generally only remove my baffle when I've planned a decent ride in the countryside and I make a point of trying to be as unobtrusive as possible in built up areas, fortunately my unbaffled Fuel can is not too obnoxious at modest revs.

[gixersix]

When I had my bike dyno'd I asked them to do a set of runs with the baffle in and out of my Fuel end can.
Baffle in - power 127 / torque 71.
Baffle out - power 134 / torque 74.


From the graphs both torque and fueling delivery are better with the baffle out, and the bike definitely feels fitter.



hey there, Pie,


what pipe did you use and any chance pof posting up your dyno graphs?? Thanks

[tomjimtom]

My 2p worth,
full monty with a blueflame exhaust which has two baffles. all out doesn't feel any different to just having one out (how I use it)
but if I have both in, I really notice, hitting a massive dip in power at about 3000rpm.
I only ever have both in on the way to MOT though, so doesn't really affect me.
This is all seat of pants stuff, no figures or anything to back it up

[MEM62]

I have my bike booked for a dyno run on Thursday.  '05 Bike, slip-on kit fitted by Mike and a Scorpion end can.  I'll post up the results - with & without baffle - later this week.   

[MEM62]

OK, its putting out 125.7 BHP and 71.7 ft-lb at 10,000 rpm.  Not bad   :-))

[Andy FZS]

With or without  baffle

[MEM62]

With.  And the fuelling was spot on - well done Mike!!