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Strapping
The R Down Once More
Before heading for a
dynamometer test, I'm always filled with a sense of trepidation,
anxiousness, edginess and all other feelings that will tie knots in the
pit of my bowels and my adrenal glands will be working overtime. Not
knowing what to expect, especially from bolting on some performance parts
to major engine rebuilds, heading for the dynamometer always gives me the
willies. So I always do my best to clear my mind and remove all thought of
impossible gains and whatever result comes along, take it with a pinch of
salt.
Still running with Super
Unleaded RON 97 with added Torco RCL, I headed down to ST Wangan
to have the R dyno-ed on their 4WD Hyper
Power dyno machine.
Its been 3 days since I the installation of SUN Automobile and
Guang Dao
voltage products. About a week since the Torco lubricant change, fresh
Nology spark plugs and the installation of the Mugen Power Airbox.
Did a couple of runs and this time around the R managed to peak out
208.7 HP and 198 NM of
Torque measured at the engine, 10 peak horses up and 7 peak NM
increase. Much to my pleasure, the choice of bolt-on modifications
yielded very good gains, considering the fact that the engine, exhaust
manifold and catalytic converter have been left untouched. The gains in
horsepower and torque are all across the whole RPM band. The most
pronounced gains were from 6,800 RPM to 8,300 RPM where average
gains are approximately 9 - 10 HP and 11 peak horsepower was
recorded at 7,600 RPM. Torque gains are pretty impressive with an
average of 7 - 10 NM in that RPM range.
Low to mid-range power is no
slouch either, averaging about 5 - 6 horse increase before the VTEC
crossover point, but torque figures are way up the scale. 2,000 - 3,200
RPM gained between 15 - 20 NM and 7 - 10 NM torque gains
from 3,800 - 6,300 RPM.
With an increase in
horsepower and torque, the time recorded on the Hyper Power dyno was also
reduced, from 10.838 to 10.717 seconds which is a 0.121 seconds
improvement. Even the A/F (Air Fuel) Ratio is leaned out by quite a fair
bit which explains why I had better mileage after installing these items.
When electrical load and all electrical systems are working overtime, the
ECU would load a safer map to prevent unnecessary knocks and pings from
the engine. It is to my understanding that when the electrical side is
running efficiently and that electrical load is reduced, the ECU can
unleash its potential by re-adjusting the A/F map to generate more power
and torque.
It goes to show that with
the right combo of good quality lubricants, good plugs, enlarged air
intake and the addition of high performance voltage products can transform
a car and improve drivability and provide decent torque and power figures
and this is merely the beginning, coming soon, there will be more
performance items to spruce up the R and improve every aspect from chassis
tuning, ride and handling, braking, security and ECU tuning.
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