Personally I believe it started when HD riders thought their oil pressure was
too low when idling at a stop. So they would BLIP the throttle to bring up
the oil pressure. People started to panic seeing the pressure drop almost
to zero. Then with more & more HD riders comming into the fold they
probably heard older HD riders blipping their throttles at a stop and figured
that is what you are SUPPOSE to do. But now you have the nutcakes that
figure they have to REDLINE their tach at every stoplight. Then add the
bar hopping crowd comming home in the middle of the night figuring they
have to keep the motor tached all the way home. So .... Now Cities around
the nation are trying to enforce a Federal Law that has always been on the
books about all bikes have to have the EPA stamp on their mufflers.
They just announced here in Boston the other day of starting to enforce it.
Rob .........
Man did this bring back memories, and I think you are mostly right on the blip the throttle thing. Years ago I had a generator Shovel, basically a Panhead lower end with Shovelhead jugs. At a long stoplight or while sitting at idle the oil pressure would drop, and things would start to rattle around down between my knees. A blip of the throttle would brign back the oil pressure and stop the noise.
There is also the "racerboy" image of revving the engine at a light ready to do the drag race thing to the next block. Did this a lot in cars, still happens but it is hard to hear those 4 cylinder tuner cars over the thumping stereo nowdays.