EJ257 dyno

Dotted lines represent the projected torque and power values using linear regression if there was no clutch slip. Data are unaltered as produced by the dyno machine and input into Excel for analysis.
The original chart is here.

According to the graph, peak power is at 5718 RPM. Assuming ideal conditions, a 2.5L engine would flow about 530 cfm of air at 1.1 bar of boost pressure... about 366 crank horsepower. This compares favorably with the 290 PS measured at wheels, and sounds pretty reasonable for 4WD drivetrain loss while also taking the clutch slip into account.

Dyno Dynamics: some math

How torque and horsepower are derived from measurements recorded on a Dyno Dynamics:

Calculated torque (Nm) = Tractive Effort (N) * Roller radius (m)
Roller speed (RPM)= (Vehicle speed (km/h) * 1000) / 60 / Roller circumference (m)

Torque at wheels (Nm) = Calculated torque (Nm) / (Engine speed/Roller speed)
Power at wheels (PS) = Torque at wheels (Nm) * Engine speed (RPM) / 7020

Example:
Roller diameter: 0.217m
Roller circumference: 0.681726m
Vehicle speed: 130 km/h
RPM: 5417
Tractive Effort: 7866 N

Calculated torque = 7866 * (0.217/2) = 853.461 Nm
Roller speed = 130 * 1000 / 60 / 0.681726 = 3178.207 RPM
Torque at wheels = 853.461 / (5417/3178.207) = 500.734 Nm
Power at wheels = 500.734 * 5417 / 7020 = 386.4 PS

HKS Supra with his mouth

That Integra sounds just like the real thing! :)

The Tuner Market is Dead

Kent’s aforementioned entry brought up the age-old argument that people need to stop buying cheap parts. For those of you who didn’t read his entry, he basically says “People who buy the cheap parts ruin the market and hurt the industry as a whole. People need to be educated about high quality product because if they learn about why a product is high quality then they won’t want the cheap stuff anymore.” For a long time, I too was an avid believer and supporter of those ideals. But recently, things have changed. In order to explain what my beliefs are I must first define “The Tuner Market” as what most people see as our aftermarket industry. Whether you modify your car for street, show, drift, drag, road race or time attack, you’re a part of the “tuner market.”

Very well-written article and I agree with most of his points.

Cal physicists make a radio 10,000 times thinner than a human hair

Physicists at UC Berkeley say they have produced the world's smallest radio out of a single carbon nanotube that is 10,000 times thinner than a human hair.

Professor Alex Zettl led a team that developed the minuscule filament, which can be tuned to receive AM or FM transmissions.

The first song it played? "Layla" by Derek & the Dominos. Eric Clapton's unmistakable guitar riff can be heard on a scratchy recording of the nanoradio's output posted by Zettl online.