Biker with over 40 years riding experience.
As people have said, some bikes need 'warming up' (mainly 2 strokes and some older design 4 strokes). However, warming up doesn't necessarily require a lot of revving; once a bike has actually started and the revs settled down, you should be able to leave it idling steadily, with fairly little noise, to warm up. That means you may get a few seconds of revving, a minute absolute maximum, but not 6 minutes worth.
What you may have as a neighbour is what's technically termed as an "anti-social wanker".
These come in three sorts;
- Young blokes who aren't old enough for a full license or can't afford a car. These tend to have bikes with fairly small engines. They're usually very colourful, spiky looking, motocross type bikes from Yamaha/Suzuki/Honda or scooters which make a relatively high pitched roar. They tend to dress in hoodies with trakkiie bottoms. They don't actually go very fast but they're designed to make 'youths' feel good about themselves. The owner will often remove baffles from the exhaust to make the bike louder (but which, ironically, only makes them go slower). The advantage with these bikers is that once they pass their test, they'll get a car and your noise problem will disappear overnight - until their little brother buys one.
- The next sort of really loud bike tend to be Harley-Davidsons. The owners of these tend to be middle aged men; often those whose mother's wouldn't let them have a motorbike when they were teenagers and they're making up for it now. Harley-Davidsons owners are living an ad-man's dream. The bikes are big, flashy custom styled bike, often with high handle bars and 'slash-cut' exhausts which make a HUGELY loud, low pitched, blat- blat, blat-blat noise.
- The last owner type is the racer wannabe. His bike is low and sleek looking often with garish colours. It can be any recognised Japanese brand but they aspire to an Italian Ducati or Aprilia. The biker will usually have garish, head to foot leathers. Unlike the first two types, although these bikes are loud, they shouldn't need to be revved hard once they've been started - in fact it's not very good for them, they overheat easily. Again these bikers will often have special go-faster loud exhausts which aren't street legal.
If your neighbour isn't one of the above three types, he's probably just dim. A middle of the road, non-posey, type bike shouldn't actually make much noise. Mine is 1100cc and does 140mph, but you wouldn't notice it from other traffic noise. OK, if I revved it like an idiot, it'd be noisy - but it would harm my bike, so I just wouldn't do it. And nor would most other bikers because bikes cost a lot of money. Nowadays, middle of the road bikes come with quiet exhausts, like most cars. It's only inconsiderate twunts of the above three types, that make alterations to their bikes which make a lot of noise. These alterations are often illegal.
Have a good look at the bike, make a note of the brand and, if possible, the model and how many cc's. Once you've identified it, you'll have a better idea if the exhausts are illegal and can report to police with some hope of getting it stopped. If it's a run of the mill bike, tell him that he can warm it up without revving its nuts off!