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BMW Performance Products
| Carbon-fibre inlet ducts for BMW R259 models .... and soon for other
fine sports machines.
A simple device which provides considerable performance and economy
gains, particularly when used with an aftermarket exhaust and a suitably
tuned chip.
Available now for the R1100RT, R1100S, R1100RS, R1100R and R1100GS.
The standard machine, prior to modification.
Standard
R1100S images and specifications
|
For all enquiries, please email lennie@boxer-performance.com |
R1100S Dynojet performance
graph
with and without ducts. |
This graph is for the development R1100S belonging to Boxer
Performance's principal, Lennie.
It compares the bike in standard tune, at 2500kms, with its current
state of tune using the InDuct intake duct, new cam grind and advanced
cam sprockets (to improve the low and midrange power delivery), and after-market
exhaust which has had internal welds ground out to remove restrictions.
This bike also has gas-flowed cylinder heads and an Epicycle VariReg
adjustable fuel pressure regulator. We have spent many hours testing and
tuning each change on the dyno and on the road to match and maximise the
benefits of the component parts. |
R1100S with standard and
InDuct manifolds
|
This chart shows the development R1100S at the then current state of
tune with the stock duct compared to the same state of tune with only a
change to the InDuct intake duct.
The dyno results do not reflect the full benefits
of on-road performance which result from the extra airflow and resultant
pressurisation of the airbox. |
R1100S Vanderlinde comparison
|
Dyno results of two different R1100S machines, one fitted with the
much talked about Vanderlinde exhaust and chip and the other fitted with
the Staintune exhaust and FIM chip. There is a difference of about 8 degrees
Celcius in these runs. There is no base run on the S fitted with the Vanderlinde
system to compare to the base runs from the standard Staintune bike. This
will give an idea as to the comparison between the two pipes and chip combos.
While the Vanderlinde delivers more peak hp, the Staintune and chip deliver
better midrange. As I mentioned on the Pelican BBS I have heard a lot,
and now see the results. I am quite surprised that the Vanderlinde combination
produces the top end that it does.
Comparison Graph of two similar R1100S bikes
Ride impression of the R1100S |
R1100RT comparison graph
More
Graphs
|
This graph compares the unmodified R1100RT and the same bike with with
the InDuct intake duct fitted.
The dyno does not truly reflect the actual on
road gains.
This bike with stock exhaust and just the InDuct fitted was
able to keep up with, and better, an R1100S fitted with a Staintune and
InDuct.
Both machines were two up and loaded with rally and camping equipment.
The test was done with a top gear roll on from 130-180kmh. The R1100RT,
according to the owner, gained an advantage of 3 bike lengths over the
R1100S at 180kph.
Images of the R1100RT components |
Boxer-Performance.com
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