My GS completed 2400KM on odo and 2.5 months old. I consistently got 56.5KMPL after 1st service. I ride mostly 50-75KMPH speed. In last week mahabhaleshwar trip i got 55KMPL(with 891KM of 16L petrol). I rode mostly on 60-80KMPH and occassionally went 100+ speed on the trip.

I think there may be carb setting doing the issue in your bike .

Interesting,here in Kolkata,I think,the Pulsar220F is the tough one to beat.......I have taken R15 many a times in city streets but the 220F with its huge ass just instills concern in me,what if the rider sudden brakes or loses control and on highways,it does 100kmph in the third gear itself,though even then it finds itself not at ease with the GS in RVMs,coz GS has that advantage of an extra gear ,but Pulsar220F is a far easier machine to ride anyday than the R15,hence racing it may prove difficult.

Thing is and strangeness is GS150R's and R15's engine are very identical in displacement and even in the Bore and the Stroke configuration,they develop power very similarly-less low end torque,strong midrange torque,Huge top end Bhp.Four valves,forged pistons and liquid cooled head allows the R15 to sustain high top speeds which can be achieved at redline revs........which is not the case for the GS150R,to avoid damage to the engine,Suzuki has used rev limiter which cuts the machine from accelerating to red line in the top two gears,while R15 uses all six to power out.Only easy way to make GS150R perform better is bigger carburetor and the porting,boring etc are complicated things.

I have something to share about the mileage with all GSR owners here now :
I have tested my bike in two carburetor settings,
1.The rich carburetor setting in GOD mode returns 40kmpl on spirited riding and 45kmpl normally........this setting is achieved when the fuel screw is turned five times,half circle wise away from fuel screw lock position.

2.The lean carburettor setting in GOD mode returns 60-61kmpl under every riding conditions,the vehicle suffers huge loss in low end torque at this setting...........this setting is achieved when the fuel screw is turned twice,half circle wise away from fuel screw lock position.

3.The ideal setting in GOD mode returns 52kmpl under spirited riding and 58kmpl normally...............this setting is achieved when the fuel screw is turned 3.0 to 3.5 times,half circle wise away from fuel screw lock position.

Awesome research, just what i was looking for to tune the carb the easy way, (without that long procedure of setting idle etc etc).

But could u clarify the turns part again ? Because you said 3 times, half circle wise. Is that like 3 x (180 degrees) ?? (which would be 1.5 full turns from lock position)


@Guru_007: Congrats on getting your bike finally. I didnt log on to xbhp for few days, saw the posts now.

Vishnu will be ripping out his hair now, after all the preaching he has done to leave the carb alone.

he hates carrying screw driver and tuning by mach50 method but for the sake of GS 150 R Long live and good cause

Not at all. If anyone is deliberately trying to spoil his bike, what can I do?

5 times half circled means 2.5 {2 full and half turn}s from lock position (fully closed position)
thats the default position i believe, Machda am getting close to 62 kmpl with the above settings

twice half circle away from lock position means 1 full turns from lock position
thats too much lean brother

hope our Saviour Vishnu will post after midnight as he have to type a lot again

Catch ur point.......Guys SUZUKI came to FACE BOOK... not sure its genuine one

After long deliberation,too much actually thinking of buying the GS.
Only the hero honda hunk and Dazzler stand in the way
although i'm leaned towards Gs from the beginning needed to know if its the rite choice from ppl who own it.
Are the brakes too bad? what about the tires?
how hard is it to handle in traffic? i'm 5'10 in height
and finally what about long term engine stability or quality?

Seems you put lot of efforts to select or finalize your partner...

I have only one word for all your questions
the answer is "its a SUZUKI"

the last assignment for you is to go thru the last 10 pages and do refer the link on comments posted by our great veteran friend philosopher and guide Mr.Anupdas

Best of luck

@venky7: Im one of the people with some complaints about the vehicle. Even then, I like it very much and cant imagine being with another bike. Theres some magic about this machine. HHH and uni are no competition. (but I do have a soft spot for uni's jet engine)

When I got my bike delivered it ran very lean,which I raised to 4 half circles,which imparted adequate power and top end,3.5 circles puts things on a leaner side,something that can be used in these days of high fuel prices,but not lean enough to fry your valves.

5times half circled has got the GS150R that I posses deliver only 40kmpl on the mileage front while top end is restricted to 110kmph only

Actually,the true form of tuning without any fail safe methods would be,the old school method,where even a tachometer is not required :
How to Tune & Modify Carburetor Performance | eHow.com,

I will now tune to the above method and assess the results.

Hmmmm Lets see how it works

But i wont tune my GS further because it was perfectly screwed up by the professionally trained carb screwer s (SVC) and am happy with the mileage

Folks at my SVC are adviced by me ,not to tune my carb........cause the last time they did it,I crashed with my bike because at a corner,the GS150R lost idling and engine stopped,which caused lost of momentum and few evident scratches on my bike

Its better to try my hands..........when I know,the carb is not in danger and also is gonna be replaced by a Mikuni BS29 soon

Macho the present BS 26 is tuned for the GS150's typical characteristics.If you go up to BS 29 you will loose Venturi Velocity and the bike will loose performance.If you need better acceleration and top end go for up-jetting,but not a BS29.....unless you are going to up size the engine also.