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1125rr
Posted on Saturday, April 04, 2020 - 02:04 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

Hey guys,

I'm sure this has been mentioned on the forum before but sharing it in the event anyone is interested.

American Sportbike did this exhaust comparison on every maker, with/without a race ECM; same bike, same dyno, same day. Sound, horsepower, everything.

The link is available though the Barker web page (near the bottom) if this one doesn't work.

Enjoy!

https://cdn.shopify.com/s/files/1/0475/8121/files/ Buell_1125R_Independent_Exhaust_Shootout_Report.pd f?513
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Shoggin
Posted on Saturday, April 04, 2020 - 04:03 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

Thanks for posting that, it's nice to keep it a easy resource to find. Man, I haven't seen a CES muffler in a LONG time!LOL

All that data keeps proving that ANY aftermarket muffler with a standard Race tune is so much better than the EPA constricted OE tune, it really doesn't matter which one you choose.
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1_mike
Posted on Sunday, April 05, 2020 - 01:05 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

Yea, that's funny.
One of the last comments..."None of these pipes were only a little bit louder than stock. They are all CONSIDERABLY louder, and some even painfully so."

I have a Barker muffler on my CR (need to get it running again). When I was driving it to work everyday, I would push it down the street, and around the corner before I started the engine. The street is much wider than my street, so I figured the sound would dissipate more, and not bother people as much at...4:30 in the morning.
No...not so much..!

I never got a "sound" ticket with it.

Mike
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1125rr
Posted on Tuesday, April 07, 2020 - 01:32 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

lol Yea I used the same technique leaving for work on a RC51 I used to own. Push it down the street and trigger the starter while coasting, try to rumble away near idle RPM.

That bike constantly caused car alarm warning chirps during normal cruising, sometimes setting them off entirely as I passed. One of the best twins I've ever felt, though. And it was all about that bass, no treble. ; ) Sounded nice and soft, only the deepest hollow thrum I've ever heard--no crackle the way many car exhausts are tuned these days, or 4 cylinder whine. I think those are more offensive even if quieter on the DB meter.

I figured that by pushing and coasting to start, if someone wakes up just a tad as a loud bike passes, they may drift back off to sleep. Whereas if its idling outside it would probably wake them all the way up. I then stopped down the road to let it warm up a bit. Always nice to maintain relations with the neighbors.

Also, I have noticed on the Buell it can sound much louder to the rider than normal bikes. Yes, they are loud aftermarkets, but I've regularly asked my neighbors and insisted not too loud. As long as not hard revving.
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1_mike
Posted on Wednesday, April 08, 2020 - 01:45 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

1125rr wrote -
"Yes, they are loud aftermarkets, but I've regularly asked my neighbors and insisted not too loud. As long as not hard revving."

B.S. - They are just being polite..!
My neighbors said the same thing when I asked...I knew better..! My across the street neighbor has a Harley that's NOT as loud as my CR. When he occasionally leaves early, before too many surrounding noises, his bike shakes everyone awake. And like I said, my CR is louder..!

Mike
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Ebmachine
Posted on Wednesday, April 08, 2020 - 03:26 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

Attached is an exhaust shootout with dyno results. The Barker is available with two inserts. The 1 1/2" is the least restrictive and costs only 1 or 2 HP. It is not loud and very streetable. This link is to a mapped ECM with the Barker exhaust.

https://barkersexhaust.com/products/buell-1125r-cr-performance-exhaust-complete-package
application/vnd.ms-excel
HP-Torque-AFR.xls (607.7 k)
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