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CrazyMotorcycleGuy
Most users ever online was 4,519, September 2, 2015 at 03:26 AM.
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  (#1)
I'm a Rookie, How do I Wheelie?
 
Posts: 2
Join Date: March 9, 2003
April 11, 2003, 10:28 AM

The time has finally come for me to upgrade my stock exhaust. Please help by providing suggested slip-on manufactures for a 2001- R1, that's compatible without jetting.
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  (#2)
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Join Date: December 17, 2002
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April 11, 2003, 10:35 AM

I know nothing about slip-ons but welcome to the board!
<---standard greeting


~Kim
CCS# 827
01 GSXR1000
01 SV650S

I'm ADOS: Attention Deficit Oooooohhhhh ... Shiny!!!

Life's a BITCH. 'Cause if it was a slut, it'd be easy.
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  (#3)
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Join Date: September 30, 2002
Location: Silver Spring, MD
April 11, 2003, 11:04 AM

You don't HAVE to reject with a slip-on, but you should. The slip-on is going to make the gas flow faster and in turn will cause your engine to run leaner.


"Nick675 - sounds like a Harley"
"Me - Its a trash can"
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  (#4)
I'm a Rookie, How do I Wheelie?
 
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Join Date: March 9, 2003
April 12, 2003, 10:22 AM

kevers...Thanks for the welcome.
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  (#5)
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Posts: 64
Join Date: February 3, 2003
Location: Herndon, VA
April 18, 2003, 10:27 PM

2001 R1 will work fine with most slip-ons without rejetting. Contrary to popular belief, most bikes don't run leaner with a higher flowing exhaust - quite the contrary - they tend to have rich spots at low rpm where the stronger resonance signal from the straight-through muffler makes flow more variable during valve overlap at low RPM. With the EXUP valve in the stock R1 header, this problem is mostly eradicated.

My no.1 recommendation for the R1 is always Akrapovic (perfect fit and finish, very light and reasonably quiet). If you want something a bit more trendy and don't mind having to mess with moving the turn signals, the Leo Vince and Devil high levels also work well from personal experience on the dyno and have a good quality/price factor (especially the Leo Vince). In the end, slip-ons are really more about style and sound than outright performance - so pick what floats your boat.


Nick Jennett
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Lost somewhere in the Universe - back soon
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Posts: 1,043
Join Date: October 20, 2002
April 19, 2003, 09:05 AM

Yup........what Nick said. I have a Scorpion on my 954 and it runs quite rich right off idle.


People sleep peacably in their beds at night because rough men stand ready to do violence on their behalf.
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  (#7)
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Join Date: April 4, 2003
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April 19, 2003, 09:43 AM

Go with the TI Akrapovic. My buddy just got one and it looks great. Quality is very good.
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Join Date: September 30, 2002
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April 21, 2003, 11:51 AM

I had a Yoshimura RS3 on mine and it sounded good and ran good. Just my .02


Ride Hard or Put it Away. Trickn is life.
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  (#9)
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leon's Avatar
 
Posts: 1,037
Join Date: October 8, 2002
Location: Arlington
April 21, 2003, 12:15 PM

Quote:
2001 R1 will work fine with most slip-ons without rejetting. Contrary to popular belief, most bikes don't run leaner with a higher flowing exhaust - quite the contrary - they tend to have rich spots at low rpm where the stronger resonance signal from the straight-through muffler makes flow more variable during valve overlap at low RPM. With the EXUP valve in the stock R1 header, this problem is mostly eradicated.

My no.1 recommendation for the R1 is always Akrapovic (perfect fit and finish, very light and reasonably quiet). If you want something a bit more trendy and don't mind having to mess with moving the turn signals, the Leo Vince and Devil high levels also work well from personal experience on the dyno and have a good quality/price factor (especially the Leo Vince). In the end, slip-ons are really more about style and sound than outright performance - so pick what floats your boat.

Nick is the man!... Nick, I'll be bringing back my 750 soon. I put the PCIII on it and will probably want you to make me a custom map. I know my curve will be as smoth as your 12R!

-Leon
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