Query Approved.

The run-in procedure you have followed is the conventional one which is what the manual prescribes i suppose. But thats ok, you have not done any harm to your engine. If you really want to test the pick-up/acceleration then take it up to 7000-8000RPM in second/third gear and see if you are getting the expected surge.
For smooth gear changes, maximum mileage you could change gears @4500-5000RPM and this will provide gud enough power for your daily commutes. But since you have completed 1000kms now and if u are not too particular about mileage you can rip it at 7000-8000 rpm at times as a pulsar has its power all concentrated at the high revs and has a lot of fun to offer for an adrenaline rush hungry youngster

Hi Sudan welcome to xbhp..
you said that you maintained speeds of 40kmph for first 1000kms that is very good that you did good running in for the bike engine as company also suggest this.But there is another ways which is known as Moto tuning no no not that tuning it means to run engine as harsh as possible its good for the engine and it is tested modern engines are made with the help of good technology good piston and rings,they are not like the bullets or BSA which comes in 1950-60and so on that we had to do good amount of running in.
The point you ask was:
"NEVER ride at a sustained speed/rpm for any length of time"
This is true but only in certain condition this method only implies when you are ride your bike above its speed limit means it depends on bike cc,more the cc higher will be the torque and less stress will exert on the engine and that will help you in cursing at high speed.Lower the torque more will be the stress on the engine at high speed.Example Pulsar-220 & HH Karizma...
Always remember never do throttle locking for continues high speed in this way you will damage your Piston as well as crank.Our Indian bike are not meant to do all this stuff.
IF you are below the accepted limits - keep changing the RPM and speed
I don't agree with this statement because if we are riding at constant speed for example at 60kmph without stressing our engine we will get good mileage as well as good engine life,but on the other hand if we are dropping throttle at any speeds like this we are creating wear in the engine.
But be practical who doesn't break in India there is hurdle at every few meters...

You said that you don't think your bike engine has 'opened up properly:
Buddy you are extra conscious about your bike don't think that much and enjoy the ride try to touch top speed on your machine.

The Ideal rpm
Every bike has different gear ratio.Gear ratio are very important for the individual riding bike improper gear shifting leads to engine damage.try to maintain good rpm at the time of shifting,your eyes should always on the RPM while shifting gears.
But yes never exceed above 5000rmp while shifting

I tell you how I change-

1st gear-10kmph at 3krpm
2nd gear-20kmph at 4k rpm
3rd gear-30-40kmph at 4rpm
4th gear-50kmph at 5rpm
5th gear-60 RPM comes down to 4500rpm now I am cursing and engine is stress free too
(you may be thinking how 4500 in pulsar 150 which I have because my bike engine is opened up and it also have thick rear tire which increase the revolutions of the rear tire as compare to front tire)
One thing I wanna say is pulsar run on dual spark technology
dual spark don't continue after 5k-6k rpm mean till 5-6krpm dual spark plugs work after that when you exceed 6k rpm your one plug will not work due to thermal sensor (This thing I've tried and tested)
P.S: Do leave your bike on idealing when you start it in moring + when you are switching it off after long ride this way you will increase engine life

I hope I've solved your query
So t/c and ride safe and love your bike.
cheers...

@Aryan thanks for approvin
@DEvIl$ LAir Thanks a lot
@zayn ya, I'm probably bein extra conscious,.....
thanks for the detailed explanation and encouragement and I do love my bike

I did not know that!!

Yes Ashish try this
put your bike on idealing and see by taking out one plug wire and you increase throttle you will see right side plug work on 30% power & left side plug work on 70% power..