laser vs. remus exhuast systems?

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plasmatron

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well... had the GS for 6 months now so the overwhelming urge to start chucking aftermarket bits on it has kicked in...

already ordered a motorradconcepts hugger, some tobinators, a Stebel magnum horn and some LED bits and pieces, but it's the exhaust system that's got me wondering...

I know a fair number of folks on this board have installed the REMUS Revolution can and/or full system... what I've read about it leads me to believe that it's generally good kit...

Strangely I've not heard much mention of Laser's system for the 1200GS... They obviously must be involved with BMW in some capacity since if I remember correctly the Boxer cup replica S came standard with a Laser exhaust system... although I suppose REMUS must be too since they sell their exhausts through the BMW dealers... so I assume neither would effect warranty...

personally I like the look of the REMUS carbon can better than the Laser offering, but the Laser's headers look better engineered / built than the REMUS...

so with appropriate apologies for any kicking of dead horses that this might bring up, does anyone have any thoughts about the relative merits of the two systems...?

:beerjug: cheers...

plasmatron
 
Having trouble making up your mind. Maybe this link on R12GS Exhausts from the Pelican Parts R1100S Board will help.
http://www.motorradonline.de/static/specials/Auspuff_1200GS_2005/FrameSet_auspuff.html

It tests 13 different exhausts for the R12GS. It gives performance characteristics, decibels, weight, and long soundbites at idle and at more speed. It is from Motorrad and is in German but you should be able to navigate it. The sound bites are down at the bottom of each selection. Hope this helps. Zoom Zoom :D
 
spot on...

thanks RogerJ... (now if you could just point me towards those "learn German in 24hrs" type websites, cheers:D )

although to be honest I've listened to them all and I'll be damed if they don't all sound much the same on roll on... except the HPE Akrapovic look-alike which sounds a bit fruitier... pity the real thing costs 1120quid:( ...

anyway I'm still leaning towards REMUS, but those who already have them... can you confirm whether or not the end... erm... spout? of your end can looks like A or B in the pics below... up until now I've only seen (and I prefer) B but on the German site they have the A version... strange...

A:
remus.jpg


B:
GS1200%206.JPG
 
plasmatron said:
...now if you could just point me towards those "learn German in 24hrs" type websites...
Click to expand...

If you use AltaVista's Babelfish and point it at the previous URL, it'll give you a fairly dodgy but somewhat readable version of the web-page..

What they seem to say:
Of the 15 Exhausts, 13 lose two to four HP over the original BMW Exhaust. Only the Schnitzer and SR Racing cans offer the same performance levels as the stock can. The SR can offers a noticeable torque increase in the much used mid-speed range, and as such is a clear winner.

Here's the power curves for the SR can:

sr.gif


Oh, and yes, the Remus 'type A' can looks like a droopy dick. :D
 
Thanks for the summary and analysis DodgyGeeSer. Glad you could wade through the Tower of Babel translator. Cheers!
 
seems strange that these test result seem to fly in the face of all the manufacturers dyno results... i mean of course the manufacturers are going to ham it up a bit and not market their product as a POS that reduces horsepower, but 13 out of 15 reducing peak HP is there something we are missing here?....

they seem to be testing them as slip on's in some cases and as full systems in others if I'm not mistaken... obviously full systems that bypass the cats are going to get better results than slip on's that don't... I assume that's where the SR Racing and the AC Schintzer products win... although the SR system does have a very healthy torque boost doesn't it...

also since Deutschland has very strict noise regs that *are* enforced are they testing these slip on's with the noise baffles in per chance?...

lastly I wonder if anyone at Akrapovic has noticed that their system is way over DOUBLE the price of *any* other exhaust system on offer... surely their sales/marketing people should figure out that that's not the best way to attract sales... sheesh...:confused:
 
TEESTAR said:
can not help you with them ones but have you had a look at BOS systems

http://www.bos-exhausts.com/bmw-eng-pond/index-bmw.html

got a full system fitted and its completely change the bike. looks and sounds the dogs B%^&%ks
Click to expand...

Have to agree with Teestar, have the full system myself and it just sounds fantastic, noticed more throttle responce across the range and more mide range grunt....happy as larry with it, well made and very good price at 600 for the whole thing fitted!!

Now all I need to do is get my licence back so I can ride the dam thing!

Cheers


:beerjug:
 
see that's what makes me suspicious about their test, since according to their dyno results the BOS system makes *less* power and less torque than the stock system for the majority of the rev range... :confused:

bos.gif
 
plasmatron said:
see that's what makes me suspicious about their test, since according to their dyno results the BOS system makes *less* power and less torque than the stock system for the majority of the rev range... :confused:

bos.gif
Click to expand...

Hi plasmatron
Dont know who or how that graph was made, but heres a a couple of graphs which show something a little different

http://www.bos-exhausts.com/bmw-eng-pond/index-bmw.html

the only area which the stock out punches the BOS is around 3600 to 3800, everywhere else the bos is on top
 
Boz said:
Have you tried replacing the chip, BOS do one but dont know who much or what difference it would make?

:confused:
Click to expand...

I thought the R12 does not have a chip. I just got the Reums full system and I am waiting on the Wunderlich power controller. It should make a considerable difference.
 
TEESTAR:
Yep, every other dyno graph I've seen for the various systems is considerably different to the rather weak results that German test arrived at... I guess the truth lies somewhere between the optimistic factory dyno's and the very low "German test" results...

DADASHI:
What do you think about the build qaulity of the REMUS system, specifically the headers?... To my mind the cans look great, but the headers seem a little less... erm... thought out than some of the other brand's headers with cross links etc...

it always works out like this doesn't it... days of research, discsussion, advice and comparison and I'm still no closer to making a final decision on which system to get...
:rolleyes: :D ...
 
plasmatron said:
TEESTAR:
DADASHI:
What do you think about the build qaulity of the REMUS system, specifically the headers?... To my mind the cans look great, but the headers seem a little less... erm... thought out than some of the other brand's headers with cross links etc...:rolleyes: :D ...
Click to expand...

Plasmatron:

I just installed the system over the weekend. The whole thing put together looks fantastic. Although I agree with you on the headers. I was originally going to get the Laser headers and a Remus TI Can, but after seeing both live I decided in favor of the Remus headers. I did not like all springs/attachements the laser can had.

I have not put the bike on a dyno but it feels like it has more power. I have the baffle out and it sounds great, not overly load by any means. The only time it gets really load is on full acceleration. The sound is music to me ears.

By the way I just spoke with Remus USA and they told me Remus is working on a FI mapping software that can be downloaded to the OEM computer in order to get the full benefit of the system.
 
DADDASHI said:
Plasmatron:

I just installed the system over the weekend. The whole thing put together looks fantastic. Although I agree with you on the headers. I was originally going to get the Laser headers and a Remus TI Can, but after seeing both live I decided in favor of the Remus headers. I did not like all springs/attachements the laser can had.

I have not put the bike on a dyno but it feels like it has more power. I have the baffle out and it sounds great, not overly load by any means. The only time it gets really load is on full acceleration. The sound is music to me ears.

By the way I just spoke with Remus USA and they told me Remus is working on a FI mapping software that can be downloaded to the OEM computer in order to get the full benefit of the system.
Click to expand...
Curious if you used to crush washers at the engine manifold? Also, do you have crash bars, and if so, did you have to remove them?

Cheers
 
Pop my 12 on the dyno next week. Will do a comparison of stock headers/stock can and Remus headers/stock can to see what the difference is before going to an end can. Rumour has it the headers liberate the power. We'll see.....

Stu
 
drdata said:
Curious if you used to crush washers at the engine manifold? Also, do you have crash bars, and if so, did you have to remove them?

Cheers
Click to expand...

I do have the HB crash bars and did not have to remove them.

Yes I did get new gaskets, figured for 15 bucks I'd rather not take the risk of an exhast leak.

Also I should tell you that I had to use a gasket sealer where the two header pieces conntect. Without the sealer there was a slight leak.
 
Interesting results there DADDASHI... thanks for the report back... I'll be interested to see what comes of this Remus performance download issue and also interested to see the Dyno results for the stock can with Remus headers, since this is also an option I'm considering...


I think I'm leaning towards the Remus can with the Laser headers... I'm not a huge fan of the springs but the Remus headers just look a shade too... unfinished for my liking... Kind of like they were made as an afterthought to have something to bolt the can onto... but that's just me :rolleyes:, and I'm sure they work fine...

on the subject of headers, what concerns me is that the various aftermarket headers are regular high grade steel and will go rust brown after repeated heat cycles... I have the OEM Chromed headers on my 12GS and the midnight blue and shiny silver look really does it for me... I'd hate to have to go to dirty, rust brown pipes and headers....

:beerjug:
 
Since I've heard a lot about a Power Commander for the 12GS and according to the DynoJet website, the Power Commander's for R series BMW's will be ready in June 2005... I fired off an email to Dusty, DynoJet's sales guy in Las Vegas about the chances of us having a PC for the 12GS any time soon...

The reply quick and helpful, but less than encouraging:


The R1200GS is going to be quite some time as it uses a different EFI system than the others. This bike has 2 O2 sensors which is not something we have looked into yet. Thanks for the inquiry.

Dustin Schaller
Powersports Technical Support Manager
Dynojet Research
800-992-4993
www.dynojet.com
www.powercommander.com
Click to expand...

looks like it'll be a long time before we see anything for the 12GS...
:(
 
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