I really like this. Can’t wait to hear it.

 

haha you too! I got mine a couple weeks back and have been waiting too.

 

Looks good, but **** that must be LOUD! I still can't believe how loud my stock UGS exhaust is and I'm still puzzled how they made it meet regulations (not complaining, just pleasantly surprised)! Does that Pro-Race even have a baffle?

 

Well, I definitely don't expect it to be quiet But then again, it's all relative.

I've heard other guys' bikes who have the even shorter Pro-Race GP-S1, which is basically just a little stub / tip thingy. Those are pretty loud but didn't find them offensive. I'm guessing this might be a little tamer, but not by much.

And no, there is no baffle. It's basically just a pipe extension.

 

Braaaaaaaap.

 

Take a video after its installed I would love to hear this thing.

 

I've been eyeing that thing up since I got a bike.
Curious if you'll need to re map for the less restrictive tip.
Post picture once you get installed.

 

I ask someone who is running this "muffler." he didn't do anything and said he wasn't noticing any issues.

 

If you're just changing the exhaust, there is no need to re map it. These computers will adjust up to 20 percent in either direction as far as fuel goes. I'm running a similar exhaust with a K&N Filter and I have no issues with the way it runs.

 

As promised, here are some pics and a video.


Overall impression: Yeah, it's loud. No surprise. If you are any part hooligan, you will love this pipe. And I think it looks great too. Sounds killer out in the twisties. Grin factor was huge out in the sticks. Time will tell if it's tolerable for day-to-day riding.

I'm sure there's no evidence to support this (i.e. dyno probably wouldn't show it), but the bike felt...I dunno...faster? Lighter? Probably just my imagination after I was so surprised how heavy the stock was when I pulled it off. That thing is a BOAT ANCHOR! Not to mention the noise just makes me think I'm going faster for some reason.

I had to leave the flapper on because I don't have a link pipe or the the Servo Buddy to trick the ECU into thinking the flapper / servo are still there. I'll probably end up removing both whether I keep this pipe or not, if only to clean up all that extra garbage down there. Other than that, no re-mapping or other messing around needed.

 

looks great and sounds mean as all ****

 

I was expecting more noise, looks and sounds great.

 

It's definitely louder in person. iPhone mic does not do it justice. Plus that was recorded outside. In a garage (which I don't have) it would probably sound louder, even with an iPhone mic.

 

Nice wee video, and the bike does sound angry.....

 

Awesome sound!

Just a thought, I was able to remove my flapper valve and not trip the servo. I simply removed the flapper valve, disassembled the servo so that I could take the cables out and put the servo motor back in with the electrical connections. Basically the bike 'thinks' that everything is ok and I don't get any errors on the dash. I now fully enjoy the free breathing happiness of the bike's exhaust!


Best regards,

El Jefe

 

Thanks for the info. I ordered a Servo Buddy already (along with a link pipe), but based on your feedback, I'll try just removing the flapper valve and cables like you said, and see if the bike is happy. If it is, maybe I'll just return the Servo Buddy.

It might be nice to remove the servo anyway just to have one less piece of junk on the frame. Then again, it's not that noticeable, so maybe I"ll leave it if your method works for me.

Also, what exhaust are your running? Were you able to compare the sound pre / post flapper? I'm wondering removing it will have any positive / negative affect on the sound for me. One thing I notice with the Pro-race w/ the flapper is that it's pretty "farty" sounding around 2K - 3K rpm.

 

Awesome vid! Great sound too! This might be a silly question but what does removing the flapper valve do for the bike? Just ordered an exhaust for my bike as well and want the most out of it!

 

Removing the flapper will make the bike a bit louder but only at low revs. I believe that it was put there to ensure sound levels at low to medium levels were low enough for the EURO standards. The removal of the CAT makes a much bigger difference.

Best!

El Jefe

 

I've got a Pro-Race Exhaust on my R9t as well...and I love it! I mainly wanted to go a bit louder and beefier on the sound, but I also *REALLY* like the look of this exhaust. Also, the price was great! From what I heard in your video, the sound is essentially identical. It can sound a tad "farty", if that makes sense, and isn't much fun when I'm next to a left-side barrier on the freeway, but otherwise is great

 

Your is the GP-s1 isn't it?
Does it comes with the link pipe (the bend) or just the final bit?

 

I tried the same setup but the throttle response became horrible, particularly at the low end. Did u also experience this? Or did u also modified the air fuel mix? Thanks!

 

Just to update that my problem was solved with the installation of the BP. Pic of my setup.

 

What ‘silencer’ is this, it’s a beauty, practically invisible!

 

I have just ordered the Pro-Race GP-S1 in black i will post pictures on here as soon as i get it fitted.

 

It is hard to believe these things silence anything! Looks really nice though !

 

I got it fitted and the quality seems top notch. The laser engraving even says BMW on it. The sound though.....WOW! It’s really woken the bike up.
It is just a temporary exhaust until I decide which one I actually want, just needed to get rid of that huge stock exhaust and show off that rear wheel.

But for now I’m more than happy with it.

 

Great discussion so far...

Has anyone lined up the GP-S1 and the RC-150 to see what kind of a sound difference they put out? Exhaust note, loudness, etc?

I’m surprised manufacturers don’t put up comparisons for their pipes. I know it’s different hearing it in person but would make diving into a purchase a little easier.


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Went ahead and ordered the RC-150 and it just arrived. Looks like they stopped doing the raised logo nameplate and went to a basic printed logo. Maybe to cut costs or manufacturing complexity? A little disappointed but as long as it sounds good I’ll be happy.

Will do a before and after video to compare the sound once I get to installing it.

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Went ahead and ordered the RC-150 and it just arrived. Looks like they stopped doing the raised logo nameplate and went to a basic printed logo. Maybe to cut costs or manufacturing complexity? A little disappointed but as long as it sounds good I’ll be happy.

Will do a before and after video to compare the sound once I get to installing it.


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Subscribed! Keen to hear/see your before and after video, hope it all goes smoothly for ya mate. I've just got a Pure recently and considering the same pipe (or GP-S1). I think the Pure sounds pretty sweet on the original can so I don't really want lose that sound, but its absolutely huge and hides the rear wheel!

Shame about the raised/cut-out logo not being on the new pipe, but still looks decent enough with the printed logo IMO. Cheeky of them to change it without telling you or updating the pic on their website...

 

The RC-150 came in and I installed it over the weekend. Put together a video with comparisons for sound.

My impression is that the RC-150 is definitely livelier and more aggressive, but I wouldn’t necessarily say louder. In the video, which was shot in a garage with the door open, you’ll hear the subtle differences which are more in quality and tone than loudness. In fact, the stock pure exhaust seems to actually have more low-end rumble. The RC-150 is dirtier with more growl and more brap-factor. Kind of like comparing a refined tuba to a dirty trumpet. Both can be loud but they are different instruments.

I prefer the RC-150 as it sounds more like, well, what I want a motorcycle to sound like. I thought I’d have to put the stock pipe back on for longer touring because of the sound level but the RC-150 should be fine.

One bonus - they weight savings is huge! Stock pipe feels like it weights 25-30 lbs and RC-150 maybe weighs 5.

Also included some footage with no pipe, just for the **** of it. Enjoy.

https://youtu.be/fpTpGS1I81c


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Really useful vid, thanks for taking the time to compare. Agreed the RC sounds better than stock! Open sounds pretty good too, but not live-able (and not looking great).

Keep us posted how you find the RC to live with.

I’m still tempted by the GP-S1 myself...



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Will do - and let us know if you get that GP-S1. I’d imagine it would be somewhere in between the open pipe and the RC-150.


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