Whatever helps you sleep at night.

To answer your question, I would absolutely call it a V12. Because it is a V12. And I'd happily correct anyone who called it a boxer. Because it isn't a boxer.

It's a 180° V12. He is perfectly right in saying it's a V12. If he said boxer, he'd be wrong—I'm aware that Ferrari called it a boxer, but boxer engines have only one piston per crank pin, whereas opposing pistons in the 512 share a crank pin. Flat construction, V12 crankshaft.

They say the flag will not be used in the future, but it will be better secured when the flag is used in the future.

Good lord....RR V12 would be a nightmare. Or nightmarishly awesome. One or the other.

Bring back the funny commercials. When people are expecting funny, a long, drawn out attempt at an emotional commercial is generally not going to be received well.

Must not make racist comment......must not make racist comment......

Coolant has a sweet-ish smell to it. Pop open your radiator cap (NOT WHEN IT'S HOT) and give it a whiff. And you can buy magnetic drain plugs if the flashlight method doesn't tickle your fancy.

Its much easier to just give the software an engine speed input and let it do its thing. Again, no reason to complicate things.

With an inertia dyno, measuring the horsepower directly really is easier because it does not require any external inputs. With only an accelerometer and a roller of known mass, measuring the horsepower requires no inputs from the operator, whereas measuring the torque directly would require the operator to input the…

Hydraulic dynos and eddy current dynos work fundamentally different than intertia dynos in that the former two measure torque and calculate power, whereas the latter measures power and calculates torque. Those are of course simplifications, but you get the idea.

First off, I'll clarify I'm speaking only of inertia dynos (i.e. most Dynojets, such as the one in the video). An inertia dyno can be simplified to two components: roller of known mass, and accelerometer. The accelerometer measures one thing and one thing only: acceleration. Acceleration is directly dependent on…

Not just wheel torque, wheel torque vs. roller speed. This returns a power curve, not a torque curve. The torque curve is calculated when supplied with an engine speed input, which is why this dyno chart only has a power curve.

Most dynos read wheel torque vs. roller speed, resulting in a power curve. The torque curve is calculated using an engine speed input. The dyno operators in this video couldn't figure out where to get the engine speed signal from, so the dyno software was not able to calculate a torque curve.

You have the concepts of torque and power right, but you're missing a key variable. The dyno doesn't just measure wheel torque, it measures wheel torque vs. roller speed, resulting in a power curve. The dyno software is supplied with an engine speed input, with which it then calculates the torque curve. If you don't…

That's great, but every car is different, and every oil is different. You're surely not harming your car by changing the oil that often, but I strongly doubt it is absolutely necessary. If you're curious about it, you can do a series of used oil analyses with a lab such as Blackstone (I swear they're not paying me for…

If you're talking about the observations I do while draining the oil, its really not scientific at all. While laying on the garage floor, I'll glance at the oil while it's draining to see how much light comes through, and also get a good look at the color. Then I dip my finger in it, rub it between my finger and thumb…

Blackstone Labs for the UOA, and observing color, transparency, and consistency while the warm oil is draining. The latter test is hardly data, but it is something.

Unless an STi is regularly beaten on and/or uses shitty oil, 3500 miles is simply not necessary. With a good oil and a mostly sane driver, 5-6000 miles is no problem at all. Hell, I beat the crap out of my WRX and even after 5000 miles the oil is still surprisingly clean with minimal shearing, but then again a 5L jug…

Screw you guys, I like this interior.