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Main Area => General GS500 Discussion => Topic started by: Fletch on January 14, 2008, 07:51:43 AM

Title: Exhaust Catalytic Converter
Post by: Fletch on January 14, 2008, 07:51:43 AM
Hi,

I cut my stock pipe off my 2007 gs500f this weekend & going to be installing a new Yoshi slip-on pipe. After cutting the pipe off I notice about a cm in the exhaust there is what looks like a honey comb inside filling the entire area.
Is this the Catalytic converter?
Before I install the slip-on shoud I drill the honey comb out of the exhaust? What would be the pros & cons of doiing this?
Once I install the slip- on I will take it to a bike shop to do a dyno test.

Thanks
Fletch
Title: Re: Exhaust Catalytic Converter
Post by: dgyver on January 14, 2008, 09:01:16 AM
Yep, that is a catalytic converter. It really will not affect performance either way. It will help with emmisions though, burning off any excess fuel. Will not smell as bad too. When I made my undertail exhaust using a Duc 999 midpipe, it had a catalytic converter and I left it.
Title: Re: Exhaust Catalytic Converter
Post by: ivany on January 14, 2008, 09:32:58 AM
They put cats on GSs? Since when??
Title: Re: Exhaust Catalytic Converter
Post by: Fletch on January 14, 2008, 10:35:21 AM
Thanks Dgyver,

I thought it would add some HP to the bike if I removed it. But if you say it will not change the performance of the bike then there is no reason for me to remove it.

Thanks
Fletch
Title: Re: Exhaust Catalytic Converter
Post by: 510 on January 14, 2008, 05:58:52 PM
Hrm, and I just finished reading an article on why they didn't put cats in motorcycles; something about the vibration and stresses that would break the ceramic.

I'm thinking that article I just read is full of it.
Title: Re: Exhaust Catalytic Converter
Post by: beRto on January 15, 2008, 07:47:19 AM
Fletch,

Any chance that it's still accessible enough for you to take a picture? It would be good reference for those of us who haven't cut apart our exhausts yet  :icon_lol:
Title: Re: Exhaust Catalytic Converter
Post by: Fletch on January 15, 2008, 09:37:14 AM
I will take a picture of it tonight

Fletch.
Title: Re: Exhaust Catalytic Converter
Post by: ivany on January 15, 2008, 07:08:09 PM
Apparently, they only put them through 2004 onwards. FYI.
Title: Re: Exhaust Catalytic Converter
Post by: Flywheel on January 15, 2008, 10:29:22 PM
It is quite likely that 2004 coincided with newer EU emission regulations. Given that Suzuki bored out the Bandit to 650 cc and then introduced a whole new FI engine to comply with restrictions, I find it remarkable that lean jetting and a cat did the trick for the gs500.
Title: Re: Exhaust Catalytic Converter
Post by: bobthebiker on January 16, 2008, 02:21:41 AM
bit odd to find a carbed bike with a cat in it. but the emissions regulations are getting stricter, so all that can be done to reduce emissions is being done to our bikes.
Title: Re: Exhaust Catalytic Converter
Post by: dgyver on January 16, 2008, 05:03:38 AM
Quote from: bobthebiker on January 16, 2008, 02:21:41 AM
bit odd to find a carbed bike with a cat in it. but the emissions regulations are getting stricter, so all that can be done to reduce emissions is being done to our bikes.

Not really. The 2000 Kaw ZX9R has a cat in it. Last year it was carbed.
Title: Re: Exhaust Catalytic Converter
Post by: beRto on January 19, 2008, 07:20:24 PM
Any chance that picture's ready?
Title: Re: Exhaust Catalytic Converter
Post by: Fletch on March 24, 2008, 05:43:36 PM
I have a picture, but do not know how to post it. I can send it to you by email if you want.
Title: Re: Exhaust Catalytic Converter
Post by: CndnMax on March 24, 2008, 05:47:05 PM
Quote from: Fletch on March 24, 2008, 05:43:36 PM
I have a picture, but do not know how to post it. I can send it to you by email if you want.

just up load it to imageshack.us  (http://imageshack.us) and use the direct link to post it up
Title: Re: Exhaust Catalytic Converter
Post by: Kurlon on March 25, 2008, 10:56:28 AM
Or just email it to me and I'll post it up.

Kurlon at x386 dot net
Title: Re: Exhaust Catalytic Converter
Post by: beRto on March 25, 2008, 11:03:20 AM
I'm sorry I missed your reply... and here I thought you had forgotten about this picture!  :oops:

There's a How To about posting pictures here: http://gstwins.com/gsboard/index.php?topic=15370.0 (http://gstwins.com/gsboard/index.php?topic=15370.0)

Hope it helps! Looking forward to the pic.  :)
Title: Re: Exhaust Catalytic Converter
Post by: rohde88 on March 25, 2008, 04:57:34 PM
Quote from: ivany on January 15, 2008, 07:08:09 PM
Apparently, they only put them through 2004 onwards. FYI.

Actually, I thought only the CA bikes have them