Katana of the Month - May 2008 – XMAN75
 

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Mechanics 101 Can't get it to run right? Find a trick to add HP?
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Old 05-13-2010, 06:53 PM   #1
cablerum
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Default Slip-on Exhaust

Hi, I have a 98 Kat 750, still has the stock exhaust. I was thinking of adding an aftermarket slip-on. Just wondering 2 things. First, I would rather not have to do anything with the jets or carbs & second, is there a preferred brand or model for 750 kats to give the best sound or performance? Any ideas or suggestions? Thanks!
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Old 05-13-2010, 06:57 PM   #2
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You won't need to do anything with a slip-on exhaust. You just put them on and go. Nothing else is required.

The preferred brand is the one that sounds best to you at the right price. For my former Kat, a Good 'ol D&D was the best because I liked loud and cheap, just the way I like my women!
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Old 05-13-2010, 07:33 PM   #3
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Theres a yoshi RS3 for sale on the forum for $150.00. Great sound, not super loud and you'd be getting a GREAT deal on a yosh system.
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Old 05-13-2010, 08:45 PM   #4
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I love my D&D but my first Kat had a Hindle and that was really good as well.
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Old 05-14-2010, 05:21 AM   #5
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Quote:
Originally Posted by Nero View Post
You won't need to do anything with a slip-on exhaust. You just put them on and go. Nothing else is required.

The preferred brand is the one that sounds best to you at the right price. For my former Kat, a Good 'ol D&D was the best because I liked loud and cheap, just the way I like my women!

How does one have 22,000 posts and still reply with complete bull**** advice? This is just wrong.

Everytime you change the airflow either into or out of your engine, your fuel needs change as well. He'll need bigger jets for sure. As a matter of fact, I'd be surprised if the bike ran well at all after the change. It would be running dangerously lean and he'd risk damage to his engine.
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Old 05-14-2010, 06:46 AM   #6
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Quote:
Originally Posted by akarob View Post
How does one have 22,000 posts and still reply with complete bull**** advice? This is just wrong.

Everytime you change the airflow either into or out of your engine, your fuel needs change as well. He'll need bigger jets for sure. As a matter of fact, I'd be surprised if the bike ran well at all after the change. It would be running dangerously lean and he'd risk damage to his engine.
From my understanding the most restrictive part of the Kat’s exhaust is not the muffler and mid pipe but the header tubes. I can speak from expericane that you can put a slip on on and not adjust the carbs from factory at all. A lot of people will adjust the A/F mix screw but that is it for a slip on.
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Old 05-14-2010, 07:23 AM   #7
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Quote:
Originally Posted by akarob View Post
How does one have 22,000 posts and still reply with complete bull**** advice? This is just wrong.

Everytime you change the airflow either into or out of your engine, your fuel needs change as well. He'll need bigger jets for sure. As a matter of fact, I'd be surprised if the bike ran well at all after the change. It would be running dangerously lean and he'd risk damage to his engine.
Neg. There are plenty of Kats here with slipons that perform just fine without rejetting..
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Last edited by Free Coffee; 05-14-2010 at 08:54 AM..
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Old 05-14-2010, 08:27 AM   #8
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Kids, kids, stop the bickering. Actually some of the "street legal" mufflers are even more restrictive than the stock part. Thus "need" no jetting. You could benefit from a jet kit but that could be said of a totally stock Kat.
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Old 05-14-2010, 08:51 AM   #9
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Yea, your right (I suppose). Although, I have no idea why anyone would purchase an aftermarket exhaust if it didn't provide more air flow. The stock dual pipes are a pretty sweet seamless design. I suppose it's possible someone could put on an aftermarket system with the exact same air flow as stock.

So, to clarify, if you purchase an exhaust that increases (or decreases) flow through the engine, you need to rejet.

Last edited by akarob; 05-14-2010 at 08:54 AM..
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Old 05-14-2010, 02:43 PM   #10
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WOW, sounds like it's up to you! Slip on for better sound and looks, re-jet for more power and drive-ability. Or both for the best of both worlds!
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