exhaust baffles in or out myths

[chipwood67]

hi all newbie here.. just wanted to ask does taking the baffles out effect the bikes power i here all types of myths taking them out can effect loss of power and the common back pressure issue...also it can effect the fuel running lean and the fuel jests wont like that over time.. i have suzuki gsr 750.. and leo vince exhaust baffles in i know the exhaust has been tuned for my bike..but baffles out not so sure...also is there any section on here about the gsr 750 owners posts! thanks

[Mudshark]

[Rogerborg]

[Acemastr]

Baffle out in mine is ridiculously loud and the bike has no engine braking, thus mine stays in.
____________________
2017 KTM 350 XC-F - 2014 Yamaha R6 - 2005 Yamaha YZ125
2016 Toyota Tacoma Limited

[chris-red]

Mine certainly runs smoother lower down the revs.
____________________
Well, you know what they say. If you want to save the world, you have to push a few old ladies down the stairs.
Skudd:- Perhaps she just thinks you are a window licker and is being nice just in case she becomes another Jill Dando.
WANTED:- Fujinon (Fuji) M42 (Screw on) lenses, let me know if you have anything.

[winz]

[Polarbear]

I had LeoVince exhausts on my STR. They were stupidly loud without the baffle in.

Also, from what I remember from the waffle I got with them they were designed as a straight replacement for the standard cans with the baffles in.

Make of that what you will as I don't think end cans make much difference if you don't have the bike mapped.
____________________
Triumph Trophy Launch Edition

[Undinist]

Chipwood, don't believe anything anybody tells you. The only way to find out exactly what's what is to get to a dyno centre and test your bike with lots of different setups. You could start with baffles in versus baffles out, but also test with the stock exhaust, and with and without any other mods your bike may have, e.g. to the airbox or ECU. I guarantee it will be fascinating and instructive. If you're confused by the possibilities the guys at the dyno centre will explain - just take all your tuning parts and your standard parts. The centre will already have lots of test results from other people's GSR750s to compare with.

P.S. I assume that when you say 'fuel jests' you mean 'jets'? Jets are part of a carburettor. Your bike doesn't have carburettors, it has fuel injection.
____________________
Current bike: K1100RS. Previous: CD200, GSX250, GT550, VFR750, K100LT, K1100LT, R1100GS, R1150GS, ZZR1100, Hayabusa, RSV Mille, MV F4 750S, R1, ZX-10, KTM Adventure 950S

[Acemastr]

End cans make no difference to how new bikes run, I had to get a full exhaust to get any gains/sound. It does look pretty awesome though
____________________
2017 KTM 350 XC-F - 2014 Yamaha R6 - 2005 Yamaha YZ125
2016 Toyota Tacoma Limited

[Undinist]

[Nexus Icon]

[Undinist]

The bike may feel similar but the end can will make a noticeable difference on a dyno graph, and the results will vary considerably according to the model of bike.
____________________
Current bike: K1100RS. Previous: CD200, GSX250, GT550, VFR750, K100LT, K1100LT, R1100GS, R1150GS, ZZR1100, Hayabusa, RSV Mille, MV F4 750S, R1, ZX-10, KTM Adventure 950S

[Acemastr]

[Undinist]

Can't you stop talking bollocks? What are you on? Your posts about helmets had zero logic to them, now you're on the subject of tuning and you're spouting rubbish which you say is based on impressions of two bikes. (You don't mention a dyno so I assume you test bikes by the seat of your pants.) I've spent countless hours in dyno shops testing cans, full systems, chips and ECUs because I was in the trade, developing and selling exhausts, plus I worked with half a dozen race teams, two of which I rode for. You're so ignorant it makes me want to weep. If you had even the slightest understanding of the subject you might start by explaining the relationship between noise/emissions testing and power delivery. Can you do that? Or do you know sweet FA?
____________________
Current bike: K1100RS. Previous: CD200, GSX250, GT550, VFR750, K100LT, K1100LT, R1100GS, R1150GS, ZZR1100, Hayabusa, RSV Mille, MV F4 750S, R1, ZX-10, KTM Adventure 950S

[G]

Undinist - valid points or not, yours are entirely negated by this...

[Undinist]

Oh, stop being a knob. I'm fucked if I'm going to spend any time passing on my hard won knowledge to you peasants.
____________________
Current bike: K1100RS. Previous: CD200, GSX250, GT550, VFR750, K100LT, K1100LT, R1100GS, R1150GS, ZZR1100, Hayabusa, RSV Mille, MV F4 750S, R1, ZX-10, KTM Adventure 950S

[Acemastr]

[Acemastr]

I gave you a funny karma, it was funny
____________________
2017 KTM 350 XC-F - 2014 Yamaha R6 - 2005 Yamaha YZ125
2016 Toyota Tacoma Limited

[P.addy]

[Nexus Icon]

Roger, I'm more confused by your rating than anyone could be by my post, assuming English is their first language.

Simply put, the cat is far more restrictive than anything in the end can. Changing the silencer alone has a negligible effect on exhaust gas pressure leaving the cylinder. A seat-of-the-pants dyno will not pick up the difference on most motorcycles.
____________________
Greetings from Shitsville!

[barrkel]

Biggest difference I've noticed from changing exhaust (no remap) is worse fuel efficiency, and that's with baffle in. I did it for sound though.
____________________
Bikes: S1000R, SH350; Exes: Vity 125, PS125, YBR125, ER6f, VFR800, Brutale 920, CB600F, SH300x4
Best road ever ridden: www.youtube.com/watch?v=s2MhNxUEYtQ

[Rogerborg]

[Shaft]

[Rogerborg]

[Captain Caveman]

Gixxer 750 L0 - Got it Dyno'd. No other mods than an end can.

Baffle out gave me 5 more horses over baffle in.
____________________
Mazda Bongo 2.5 V6 = MPG 22 0-60 Fast for a camper van...
Impreza - somewhere between the two.....
R1 = MPG-who cares 0-100 Slightly faster......