BMW R1200R R1150R/T F800 K1200R R1100R/T R1250R RnineT Message Board

Done over 600mi since I removed the Cat last Mon and replaced it with a Staintune collector box. I am using the stock can.
Some impressions for those who may be interested....
As I had expected, the bike is noticeably smoother now, throughout the entire rpm range.
From a stop, it seems like nothing to get to 5k now, the engine just purrs along. It has taken some getting used to, because now I look at the tach and say hmmm...time to shift up!
This is esp true at the 5>6 gear. Used to get the customary 'it's time to shift' buzz in the bars at around 4k in 5th. Now I can leave it there till almost 5k and it hums sweet as can be....
No buzz at all in the bars in 6th past 3500, just a comforting, almost undetectable hum in the pegs all the way up to almost 5k.
My tach-to-speedo benchmarks seem to be slightly less than before, same speed seems to require less rpm and vice versa...could I have picked up some loose torque somewhere???
The sound is hardly louder, I think. I wear earplugs so I did not do the mod for the sound. I definitely like the new 'wwaaaahhhhh' sound better, tho.
I have lost the heat that used to bake my ankles and tranny! Can't feel a thing, even when wearing flip-flops...(JUST KIDDING! )
I used to long for Nomex socks sometime...no more!
I'm still averaging right around 47mpg, same as before.
The only neg to this whole thing is now I have a very noticeable metallic resonance that the box makes, mostly on acceleration away from a stop and at steady throttle below ~3800. I'm not sure if it annoys me yet...

Bottom line....

jm1515 wrote:Done over 600mi since I removed the Cat last Mon and replaced it with a Staintune collector box. I am using the stock can.
Some impressions for those who may be interested....
As I had expected, the bike is noticeably smoother now, throughout the entire rpm range.
From a stop, it seems like nothing to get to 5k now, the engine just purrs along. It has taken some getting used to, because now I look at the tach and say hmmm...time to shift up!
This is esp true at the 5>6 gear. Used to get the customary 'it's time to shift' buzz in the bars at around 4k in 5th. Now I can leave it there till almost 5k and it hums sweet as can be....
No buzz at all in the bars in 6th past 3500, just a comforting, almost undetectable hum in the pegs all the way up to almost 5k.
My tach-to-speedo benchmarks seem to be slightly less than before, same speed seems to require less rpm and vice versa...could I have picked up some loose torque somewhere???
The sound is hardly louder, I think. I wear earplugs so I did not do the mod for the sound. I definitely like the new 'wwaaaahhhhh' sound better, tho.
I have lost the heat that used to bake my ankles and tranny! Can't feel a thing, even when wearing flip-flops...(JUST KIDDING! )
I used to long for Nomex socks sometime...no more!
I'm still averaging right around 47mpg, same as before.
The only neg to this whole thing is now I have a very noticeable metallic resonance that the box makes, mostly on acceleration away from a stop and at steady throttle below ~3800. I'm not sure if it annoys me yet...

Bottom line....

doh! can you define metallic resonance? does it bother you yet? does it sound weird or just different?

You might want to try wrapping the collector in heat tape(header wrap). That should muffle the tinny sound and help even more with the heat, it might even help with exhaust scavenging and give you a few more ponies.

I'm sure somebody has bought a pile of this tape cheap. I keep seeing posts trying to push it. One it would look pants and two I don't see what use it is.

guest23 wrote:

jm1515 wrote:....The only neg to this whole thing is now I have a very noticeable metallic resonance that the box makes, mostly on acceleration away from a stop and at steady throttle below ~3800. I'm not sure if it annoys me yet...

Bottom line....

doh! can you define metallic resonance? does it bother you yet? does it sound weird or just different?

It's definitely different, but I use earplugs so it is not annoying.
The best I can describe is a medium pitched metallic howling sound...but I can't give you something to compare to.
Next time I ride I will try to pin it down.
I wrapped two 4 1/2" stainless hose clamps around the box and it seemed to reduce it somewhat.
I've gone over 4000mi without the Cat..bottom line is this new noise would not hinder me from doing this again...the benefits are very noticable and worth it.

I don't have a cat in either of my Beemers, and I prefer the Remus, better sound and power IMHO.

What is considered a fair price for the remus?

Dean...Do you like the Remus with the collector or the Y pipe?

Thanks

My tach-to-speedo benchmarks seem to be slightly less than before, same speed seems to require less rpm and vice versa...could I have picked up some loose torque somewhere???

jm1515.....what you have done does not affect the transmision and diferential gear ratios.....that is unless you also swapped your tires!!!!

It looks that you got what you paid for and expected, cheers........

On the R1150R I use the "Y" pipe with the Remus Revolution can, on the R1200ST I have the complete Remus system, both head pipes and can.