Why are you thanking me? I should be grateful to you and so do others, if not you who would have known this. The credit is for you buddy

Professional racing engine are all natural aspirated high revving engines, so they should have high air flow filters. Also they are using higher compression ratios. Are you trying to say that K&N is not the best high flow filter? Or The filtering efficiency is given the highest priority than high flow?

66 kmpl in god mode @ 70 - 80 ....why did you tune your bike.....as per my knowledge yours is the best mileage with that speed i've heard so far... with that same speed i'm getting 48 kmpl in Express way ..

full tank 22.40 litters

Today filled till the brim the bunk reading shows 19.4 litters, earlier hit reserve 25 kms before so approx 3 litters remaining on reserve before filling

So the calculation is 19.40 + 3 = 22. 40

Almost 10 vehicle's are in the queue, most of them starring at me and three of them asked me "is it a bike or car taking this much petrol, is tank is full or still have space left ;-)"

Oil Change

Hey Madhu, Great articles buddy. Congrats on your posting.

My GSR had clocked 2000km & needed a oil change desperately. the engine was getting very rough. As i could not find motul, gulf or shell 20w40 oil, i went for motul 15w50 (this was only available in my area). Now after 300km the engine is better, but still rough. I also experienced sudden jerks at times.

The question will 15w50 do or should i go for a 20w40. i dont mind wasting the current oil.

Tomorrow i am planning to go to the motorbike spare parts market (the biggest in mumbai - Grant Road) where i am sure will get any oil i need.

KN airfilter.......the air intake modification.

Because they don't need them !!!! You brought out names which have separate factory for racing developments,these are not road tuned engines.
They have turbo-chargers,air induction systems,cold-air intake systems and air-filters which are specifically made to suit racing engines and are perfected at factory settings.But for the custom market things are different.
Custom market focuses on rapid power gain on non standardized units,so they buy after market stuff off the shelf.
You will find some Subarus and Mitsubishis using after market turbo or KN air intake systems.But no one would mess with the Veyron(W16),it does not need tuning.
Even supercars like Skyline GTR,Toyota Supra,Honda Acura NSX and BMW M3s are tuned too,with NOs and in line turbo air intake systems.
The now non-produced Mclaren F1 runs on nothing but the tuned-hyper charged BMW M-series engine,even its air intake system was tuned !!!!.....maybe not by KN,but by some other company,but it was tuned too.

And when it comes to bikes,the fastest road legal bike on earth is a Turbo Charged Suzuki Hayabusa grossing 412kmph,which can be bought off Suzuki's shelf easily with few more grands than the normal price,even its air intake system is modified.

KN provides affordable air-intake modification system.They are the best so they attract most criticism unlike HP or Uni.

Anyone having questions about the KN performance and the safety of using their filters,please refer to a more scientific method which explains the tech from the factory here :
K&N Frequently Asked Questions (FAQ)

hey same happened with me, only the attendant was getting frustrated, as a queue had gathered behind me.

3 times what ?? you fell ??...careful buddy...well i wouldn't recommend any one to learn to ride with this beast (gs 150 r) as it is one of the heaviest bike...since you've already started you would've get adjusted with it now i hope....
coming to the issues..

gear shifting - yours is still in run in...so WAIT...and how it is difficult for you to find first gear ..if you say it is difficult to find neutral then it is o.k..it is just matter of time..are you familiar with the 6 gear pattern..1 down and five up..since you said this is your first bike in your family i'm asking this...and use good engine oil..the gears will get smoother..

shaking after 50 - i guess it would be 3500 rpm when you hit 50 kmph at 6th gear...in that case all gs150 r has some vibrations at 3500 - 4000 rpm..it is normal...go past beyond 4000 rpm or 60 kmph and check whether the shakes are there..if it is yes then there is some problem...

warm up- thats because of cold start..don't worry it is present in all bikes..push the accelerator a bit more when engine sounds like it's gonna die..

engine jerk - i too have that same problem like the petrol flow stops for a second and engine jerks..and we are not the only two with that problem ..my sc didn't resolve this problem..i think it's the problem with engine tuning...

Thanks brother,

Dont change the second part in oil grade, always stick to xx w - 40 grade.

Even if you wont get motul or gulf just make sure its jaso ma2 standard spec on the oil can and it should be mineral oil with 20w-40

On the above said spec you can get either valvolin, elf, gulf and mobile
Sorry almost all shell mineral oils aren't jaso ma 2 they are just jaso ma only.

Thanks Bro,

Oh gosh, i have also change my wife's scooter (HH Pleasure) which has clocked 30k with motul 15w50 semisynthic oil (Grade recommended by company was 10w30, but could not get that grade). now i will have to change that also

LOL in the manual why they mention 15.5ltr for our bikes

The link you have provided is the K&N home page..What do you expect except self proclaimed superiority ? The point I was trying to make is that NONE OF THE FACTORY BUILT AIR FILTER USES TECHNOLOGY DEPENDENT ON OIL SOAKED COTTON ,LIKE K&N.
Have you found any Technical write up on the benefit of using K&N WITH PROVEN STATISTIC DATA OF IT'S SUPERIOR FILTERING,WHICH IS WHAT AN AIR FILTER IS FOR....If you still want to use it ..go ahead it is your choice.
Turbo charging is no longer allowed in F1 circuit.Mclaren is still in F1.

@psr:

Ease up on the caps buddy,before the mods chase you down for so.

Apart from that,
As I told already,MclarenF1 was a road car.
F1 is a different sport,it has most state of art intake systems to maintain the stringent A/F ratio..............the cost of a F1 machine is more than even few of us can afford.

KN Corp insists that their test data for a particular vehicle would be made available only on a written request from the customer.


However,here I bring a generalized Data:


I think these data are more than a daily rider can digest or understand.

I have already used KN product on Suzuki engines and even on the R15,they compliment each other.

May be suzuki guys underestimated the GS tank capacity...

Yeah I second psr, no forced air intakes are allowed in professional racing as they make engines too powerful to handle. Only natural aspirated air intakes are allowed.

@ Anupdas

Thanks dude. The sound really makes me worry as it seems to be coming from the engine. It is more or less like a piston shaft or spring coil getting released. The sound decreased after some time..

Should I call the dealer and check this?