Slip on and Baffle Removal - Suzuki GSXS1000 Forum
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post #1 of 12 Old 04-26-2019, 11:30 AM Thread Starter
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Slip on and Baffle Removal

So how much does the baffle in a slip on affect back pressure and engine performance? I have an Alpha T slip on that I installed without the baffle and I love the sound but Dano's Performance is telling me to install the baffle because of back pressure issues. Thoughts?
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post #2 of 12 Old 04-26-2019, 01:54 PM
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I'm not in a position to physically check at the moment but doesn't the stock exhaust can have a straight-thru flow, with only glass-pack style sound deadening? If so, what would the difference be between that and any other slip-on that has the baffle removed?
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post #3 of 12 Old 04-26-2019, 02:54 PM
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If I remember right, the stock can is offset flow...

2016 GSXS1000F
2017 GSXR1000
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post #4 of 12 Old 04-26-2019, 03:58 PM
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If I remember right, the stock can is offset flow...
Yup. I can't find where I saw it, but I think Paul uploaded a picture of it. Inlet pipe ends, offset separate outlet pipe.
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post #5 of 12 Old 04-26-2019, 05:25 PM
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Yup. I can't find where I saw it, but I think Paul uploaded a picture of it. Inlet pipe ends, offset separate outlet pipe.
Correct, took mine off recently and you can clearly see this is the case. Also outlet pipe diameter is quite small. Around 43mm.

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post #6 of 12 Old 04-26-2019, 05:33 PM
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Originally Posted by jjsemperfi View Post
So how much does the baffle in a slip on affect back pressure and engine performance? I have an Alpha T slip on that I installed without the baffle and I love the sound but Dano's Performance is telling me to install the baffle because of back pressure issues. Thoughts?
The back pressure myth was busted a long time ago. If it isn't running optimally then the tune isn't correct.

When life throws you curves, lean into them.
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post #7 of 12 Old 04-26-2019, 07:45 PM Thread Starter
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The back pressure myth was busted a long time ago. If it isn't running optimally then the tune isn't correct.
That's sort of what I'm reading. Dano's is saying to run my bike to see if I like it before a Power Commander but I think it may be a good idea down the road. We'll see. Thanks.
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post #8 of 12 Old 04-26-2019, 08:12 PM
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That's sort of what I'm reading. Dano's is saying to run my bike to see if I like it before a Power Commander but I think it may be a good idea down the road. We'll see. Thanks.


Eh, people say myths. but ive had bikes with baffle out, it had more top pull, but I felt like I lost torque down low. I definitely think back pressure is important, ive read post on here about it. PP can chime in since he builds exhaust. free flowing exhaust, more top, but you lose some down end, and vice versa.

needless to say, I run baffles forever now.
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post #9 of 12 Old 04-26-2019, 08:57 PM
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Originally Posted by jjsemperfi View Post
That's sort of what I'm reading. Dano's is saying to run my bike to see if I like it before a Power Commander but I think it may be a good idea down the road. We'll see. Thanks.



Eh, people say myths. but ive had bikes with baffle out, it had more top pull, but I felt like I lost torque down low. I definitely think back pressure is important, ive read post on here about it. PP can chime in since he builds exhaust. free flowing exhaust, more top, but you lose some down end, and vice versa.

needless to say, I run baffles forever now.
Did you adjust air/fuel when removing baffle? Lean/rich fuelling will cause power loss throughout the rpm range. You need to look at both sides of that coin. Paul confirmed back pressure is nonsense but please don't stop there, scientific analysis on the subject is abundant on the internet. Don't be ignorant.

When life throws you curves, lean into them.
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post #10 of 12 Old 04-26-2019, 10:03 PM
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Nope. Didn’t adjust anything

Loss of power and annoying loud pipes made me toss them back on, it made it hard to do wheelies onthe highway with it out. And that’s the only reason I ride my motorcycle honestly. Stand ups for milesss
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