? Does any one have any suggestions other that replacing the cat's with an aftermarket exhaust? I am Considering a K&N filter or Bmc ? any bright ideas
K&N or Bmc
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rearro
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- Joined: Sat Oct 01, 2005 8:48 pm
- Location: Silverdale, Washington
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K&N or Bmc
I am thinking of replacing the factory air filter But I not sure what to buy
? Does any one have any suggestions other that replacing the cat's with an aftermarket exhaust? I am Considering a K&N filter or Bmc ? any bright ideas
? Does any one have any suggestions other that replacing the cat's with an aftermarket exhaust? I am Considering a K&N filter or Bmc ? any bright ideas
04' R1150R Edition 80, 136/2003
Re: K&N or Bmc
After reading a lot about how a K&N passes more air, thus more dirt, I don't think I'll be going to one when the time comes.rearro wrote:I am thinking of replacing the factory air filter But I not sure what to buy
? Does any one have any suggestions other that replacing the cat's with an aftermarket exhaust? I am Considering a K&N filter or Bmc ? any bright ideas
I'd also like to hear any feedback about the BMC filters...the one for our bikes is about 60bux from
http://www.bmcairfilters.com/products.asp
BMC Air Filters
Worth it???
j magda
TripleLifer Member 454
04 Black (the Classiest Color) R1150R
Deep in the OH wasteland...
TripleLifer Member 454
04 Black (the Classiest Color) R1150R
Deep in the OH wasteland...
My last bike (inline 4 carbs, sport oriented bike) was badly affected when I changed to a K&N filter - made it too lean. I guess the good ol' EPA had the carbs running on the edge of lean and the higher flowing filter threw it off. Thne I had to re-jet....
Oh yeah, our bikes are fuel injection - no need to worry about jetting, but I don't think the gain is worth the extra money. I've stuck with OEM filters and haven't had a problem. I think the extra flow won't make a big difference on power, but then you are stuck having to 'clean' a filter instead of swapping one out.
$.02
Oh yeah, our bikes are fuel injection - no need to worry about jetting, but I don't think the gain is worth the extra money. I've stuck with OEM filters and haven't had a problem. I think the extra flow won't make a big difference on power, but then you are stuck having to 'clean' a filter instead of swapping one out.
$.02
John
Member 293 (I think)
'17 Triumph Tiger 1200 XRX
Member 293 (I think)
'17 Triumph Tiger 1200 XRX
For some reasons people are under the impression that K&N filter would let more particulates in and ruin the engines. You guys do know that dirt bike racers use K&N filters, right? 
The filter itself will do nothing. But the filter itself coupled with a freer flowing exhaustion system, fuel mapping will be beneficial. On a BMW with its not-too-high performance capability, it probably means nothing. But for those who wants to squeeze that last bit of horsepower out of their bikes, it's probably worth it.
The filter itself will do nothing. But the filter itself coupled with a freer flowing exhaustion system, fuel mapping will be beneficial. On a BMW with its not-too-high performance capability, it probably means nothing. But for those who wants to squeeze that last bit of horsepower out of their bikes, it's probably worth it.
Cogito Ergo Vroom - I think therefore I ride.
03 Rockster, 07 Aprilia Tuono R, 07 KTM 990 Adventure
03 Rockster, 07 Aprilia Tuono R, 07 KTM 990 Adventure
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rearro
- Basic User
- Posts: 78
- Joined: Sat Oct 01, 2005 8:48 pm
- Location: Silverdale, Washington
- Contact:
So What is fuel mapping? and what kind of exhaust are we talking bout' and In your opinion That still won't make a huge difference?
The reason I wanted a new air filter is to get a bit more performance out of my Rock. but now I'm having second thoughts cuz the filter I was looking at was the BMC which runs about $60.00 Kinda Steep if you ask me! Tell me more!!
The reason I wanted a new air filter is to get a bit more performance out of my Rock. but now I'm having second thoughts cuz the filter I was looking at was the BMC which runs about $60.00 Kinda Steep if you ask me! Tell me more!!
04' R1150R Edition 80, 136/2003
The K&N filter will probably run you around $60, so it's about the same price as the BMC. I'm not familiar with BMC but the K&N is not a disposable filter. You take it out once in a while, wash it out, reoil it and that's it.
The factory exhaust and catalytic converter doesn't allow your exhaust to flow more freely and has more back pressure than needed (you can't really run a true free flow exhaust) thus restrict your bike's performance somewhat. Generally it's the throttle response that suffers. The fuel mapping is the the programming for your electronic fuel ejection. It only allows this much fuel to go into your engine at a certain RPM. It's designed to pass the emission test than to allow your vehicle to perform better.
So when you put on an aftermarket exhaust and change the fuel mapping via a Techclusion chip, a ZTechnik chip or a Dynojet Power Commander, you've changed the power delivery of your vehicle. The electronic doodad allows more fuel to flow into the engine for combustion. The freer flowing exhaust system allows less backpressure restriction. And an air filter like BMC or K&N allows more air to go into the engine to help better combust all that extra fuel.
But we're talking about a lot of money here. Figure around 700-1000 US dollars for an exhaust system (a catalytic converter eliminator like the Remus Y-pipe and an exhaust can) plus installation labor. Figure $500 for a Power Commander (or 300+ for a chip) plus installation & dyno tuning (200-300 for the session). I don't know if you can do any tuning with the chip but with the Power Commander, you can put it on the dynanometer and measure the power curve and torque curve. Then the tuner would make adjustments to the fuel mapping to get rid of the lean spots that cause the dip in the power curve.
You will gain very little in power. If you're lucky, you'd gain about 10-HP at the rear wheel (which is still significant), but what you will gain is throttle response. The bike doesn't stutter at the mid-range or high-range any more. Mine revs quickly and freely all the way to red line in all six gears.
I spent about $1600 US dollars just for the exhaust and Power Commander. To many people it's not money well spent. To me it is. I can either spend the money on touring cases or I can spend money to make my bike faster. I prefer to make my bike faster and easier to ride.
Next on my list will be exhaust accelerators and high-compression heads that are sold by San Jose BMW and performance shocks by either Ohlins or Works Performance. Or a rebuild by Race-Tech if they offer that for the Rock.
Will all these mods turn my bike into a crotch rocket? Nope. I already have a crotch rocket to handle that aspect. But it will make little beast that much faster and nicer to ride fast in. I love this bike and that's why I'm spending the extra money to fine tune it.
The factory exhaust and catalytic converter doesn't allow your exhaust to flow more freely and has more back pressure than needed (you can't really run a true free flow exhaust) thus restrict your bike's performance somewhat. Generally it's the throttle response that suffers. The fuel mapping is the the programming for your electronic fuel ejection. It only allows this much fuel to go into your engine at a certain RPM. It's designed to pass the emission test than to allow your vehicle to perform better.
So when you put on an aftermarket exhaust and change the fuel mapping via a Techclusion chip, a ZTechnik chip or a Dynojet Power Commander, you've changed the power delivery of your vehicle. The electronic doodad allows more fuel to flow into the engine for combustion. The freer flowing exhaust system allows less backpressure restriction. And an air filter like BMC or K&N allows more air to go into the engine to help better combust all that extra fuel.
But we're talking about a lot of money here. Figure around 700-1000 US dollars for an exhaust system (a catalytic converter eliminator like the Remus Y-pipe and an exhaust can) plus installation labor. Figure $500 for a Power Commander (or 300+ for a chip) plus installation & dyno tuning (200-300 for the session). I don't know if you can do any tuning with the chip but with the Power Commander, you can put it on the dynanometer and measure the power curve and torque curve. Then the tuner would make adjustments to the fuel mapping to get rid of the lean spots that cause the dip in the power curve.
You will gain very little in power. If you're lucky, you'd gain about 10-HP at the rear wheel (which is still significant), but what you will gain is throttle response. The bike doesn't stutter at the mid-range or high-range any more. Mine revs quickly and freely all the way to red line in all six gears.
I spent about $1600 US dollars just for the exhaust and Power Commander. To many people it's not money well spent. To me it is. I can either spend the money on touring cases or I can spend money to make my bike faster. I prefer to make my bike faster and easier to ride.
Next on my list will be exhaust accelerators and high-compression heads that are sold by San Jose BMW and performance shocks by either Ohlins or Works Performance. Or a rebuild by Race-Tech if they offer that for the Rock.
Will all these mods turn my bike into a crotch rocket? Nope. I already have a crotch rocket to handle that aspect. But it will make little beast that much faster and nicer to ride fast in. I love this bike and that's why I'm spending the extra money to fine tune it.
Cogito Ergo Vroom - I think therefore I ride.
03 Rockster, 07 Aprilia Tuono R, 07 KTM 990 Adventure
03 Rockster, 07 Aprilia Tuono R, 07 KTM 990 Adventure
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wardieone
K&N filter swap
I have them on my Rockster and my truck. I do it more for convenience rather than performance. I will tell you that I increased my mpg by 4 and my top speed increased and my ability to get to top speed quicker increased. In my case it was the cheapest performance increase I've ever had. Wardieone
PS Rock has close to 40,000 miles and it runs perfect
PS Rock has close to 40,000 miles and it runs perfect
I just picked up a used K&N air filter from http://www.beemerboneyard.com/ for $15 American, so this is an option. Arrived clean and oiled--filter is in good condition. In response to following post, shipping was $8.01 for a grand total of $23.01. Hella cheap indeed!
Last edited by OneShot on Sat Mar 25, 2006 1:29 am, edited 1 time in total.
-Nelson
Semper Fi!
'04 R1150R Titan Silver Non-ABS
Semper Fi!
'04 R1150R Titan Silver Non-ABS
