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+--- Thread: Invanising and Exhaust (/showthread.php?tid=65967)
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Re: Invanising and Exhaust - PieEater - 23-10-13
I'm happy with my oval stainless Fuel can, the noise isn't too bad with the baffle out. They now do a range of sizes and I'm guessing the shorter you go the more noise you'll get.
Re: Invanising and Exhaust - keithfzs1000 - 23-10-13
http://www.ebay.co.uk/itm/250948023168?ssPageName=STRK:MEWNX:IT&_trksid=p3984.m1497.l2649
will alter it to the length you want and hand made delivered within 4 days sounds lovely and do ovals
Re: Invanising and Exhaust - Captain Haddock - 23-10-13
Yeah the Simmi's got me, ordered at 375mm long.
Invanising and Exhaust - Exupnut - 24-10-13
Hi mr PieEater, could u explain the graphs u posted please and wot the different colours represent. I know its a dyno chart but i never understood them. Cheers :-)
Re: Invanising and Exhaust - PieEater - 24-10-13
(24-10-13, 01:22 PM)Exupnut link Wrote: Hi mr PieEater, could u explain the graphs u posted please and wot the different colours represent. I know its a dyno chart but i never understood them. Cheers :-)Each coloured line represents an individual run on the dyno. The top chart shows 3 unique runs with the baffle fitted - the average of the 3 is 125.93BHP. The air/fuel chart shows a dotted red line which is the supposed optimum ratio, the same 3 runs are plotted on this chart with the colours corresponding to the power chart. Where they are under the line the mixture is lean, and over the line it is rich. The middle chart shows another 3 unique runs with the baffle removed the average is 133.97BHP, the air/fuel chart is unfortunately not to the same scale but to my eye it is a lot smoother with less fluctuation between lean and rich. The 3rd chart is a combined report of the 6 individual runs, unfortunately the air/fuel chart is too small so is confused but the Torque chart clearly shows the 3 runs with the baffle out on top (more torque) and the baffle in underneath (less torque) and again to my eyes the charts show a much smoother delivery of power with the baffle out.
Hope that helps.
Re: Invanising and Exhaust - Exupnut - 24-10-13
It does indeed. Good explanation. Thanks mate.
Re: Invanising and Exhaust - Kosmic Kartman - 25-10-13
(19-10-13, 12:50 PM)Exupnut link Wrote: I chose it because it looks and sounds better than kosmics
:rollin
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.
Re: Invanising and Exhaust - Exupnut - 25-10-13
Oh no... Kosmic's pissed :-)
Re: Invanising and Exhaust - Captain Haddock - 25-10-13
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..... :lol
Re: Invanising and Exhaust - PieEater - 25-10-13
(25-10-13, 07:48 AM)Captain Haddock link Wrote: 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..... :lol
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.
Re: Invanising and Exhaust - gixersix - 01-03-14
(19-10-13, 02:30 PM)PieEater link Wrote: 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
Re: Invanising and Exhaust - tomjimtom - 01-03-14
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
Re: Invanising and Exhaust - MEM62 - 03-03-14
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.
Re: Invanising and Exhaust - MEM62 - 06-03-14
OK, its putting out 125.7 BHP and 71.7 ft-lb at 10,000 rpm. Not bad :-))
Re: Invanising and Exhaust - Andy FZS - 06-03-14
With or without baffle
Re: Invanising and Exhaust - MEM62 - 06-03-14
With. And the fuelling was spot on - well done Mike!!