Yeah! I get your point. It's actually a great thing that bajaj has done. Because those it has made the performance bikes more affordable. But it'd have been better if they launched a 150cc with all the latest tech's and goodies.

Looks like you haven't kept up with the news: Pulsar 350 and 350 Duke are next in line.

Source: Bajaj Auto plans bigger Pulsar & KTM motorcycle models to take on rivals Honda, Yamaha and Suzuki - The Economic Times

sorry for continuing the OT discussion but i hope it provides some knowledge.
@harishk
As you know catcon removal is just to reduce back pressure thus providing free flow of exhaust thus enhancing power(engine has to work less in exhaust stroke).
+ves
1) Better cooling
Yes by free flow of hot exhaust gases.
2) Increased Air intake.
AFAIK there is know direct relation between air intake and concat but as back pressure reduces engine revs more freely,more power and thus more air intake.
3) Mileage 50Kpl
yes(due to less work done by engine in exhaust stroke).
4) Vibe free, revs smoothly
I don't no about vibes but yes engine revs freely.
5) No change in Exhaust note
Yes
6) better topend
yes.You may observe power increase across the range but its less pronounced at bottom.
7) Emission test pass for BS3
Are you sure? Basic purpose of catcon is to ensure low emissions of NO2 and unburnt carbohydrates.
If your engine passed emission test it shows that your air fuel mixture is spot on(well FI takes care of that).
AFAIK this happens only @constant rpm
-ves
1) Need accurate Fuel supply, else backfire.
Yes.you will definitely have fire in exhaust due to unburnt hydrocarbons(The one situation i know is when you are accelerating and then decelerating without maintaining constant speed in between-as in races)
2) Risk of local Welding.
yes
3) Not sure about Engine life factor (But I have done 20K)
AFAIK There won't be any affect.
4) If its custom bore/comp ratio then loss of engine back pressure,I have a small extension at the end pipe for 0.5CM to adjust this loss on an approximation.
I don't understand this and this is the main reason i am posting.You are removing catcon for reducing back pressure.In two strokes you need back pressure to increase FE as fuel mixture stays in combustion chamber for more time.But in 4 stokes back pressure is undesirable.

yes sir, zmr doesn't affect the sales of zma and about fz and r15, there are lightyears of difference in both the bikes. And splendor and passion are commuter's. There are lots of options in that segment. It's just about personal choice. I know that duke is far better in terms of performance but My point is that, in a "pulsar obsessed" country why would people pay about 20-30k more just for 1.5hp difference and FI. And new pulsar looks equally sexy as duke and is more fuel efficient too.

wow! I had no idea about it. That would be so cool.. but again, why would they do that? That too in 350cc segment?

Simple..

Attack and Squeeze the competition (right now only limted to Yamaha & Honda) from the top with the KTM Duke and from the bottom with the Pulsars.

Why do you think many people pay more for Ducatis and MV Agustas for similar capacity motorcycles when the japanese are cheaper and provide similar performance?

As it has been said before, with certain motorcycles it's also about being part of a brand that levitates the whole ownership experience and not about just owning a motorcycle. Pulsar has always been marketed as a performance motorcycle meant to churn out good sales figures for the company (read meant for masses), and the new P200NS will be like this as well. Here KTM Duke will provide brand exclusivity in the similar engine capacity and no doubt a unique riding experience. That's why Bajaj is going to price the new pulsar very competitively. Even when performance of 200NS and Duke will not be very different, still the target buyers of KTM are different. KTM will bring along plethora of quality and image makeover for Bajaj. Do I make sense?!

1) Me too not sure how the emission is met, experts say Yamaha LC engines hardly leave any CO after the combustion cycle. It will pass emission norms right at the exhaust out port (That is why I was curious about the P200NS having 3 sparks for meeting emission standards, While R15 complies BS4 in 2008 itself)



2) This is what I have done to gain a little back pressure. 4-stoke even needs back pressure for various reasons like scavenging etc.

I have mentioned custom bore/comp ratio ,my setup is 180CC and opening the cat resulted in making throttle response flat, like it will go on to 7K RPM and stay there in all gears. Absolutely no torque felt, somewhat similar to a huge compression loss. At first I added this extension pipe for 1CM and with trial and error ended up at 0.5CM for accurate back-pressure gain.

On a stock setup after removing cat you will hardly find any loss in back-pressure.

Also there is another negative aspect, LOOKS. I have covered up the welding mess with Apache 150's exhaust cover.




I hope other XBHP walas are getting angry due to this OOT. So, if you like to talk further on this, post in the appropriate thread and intimate me. or send me a PM or use the Facebook link below.

@ Mr. Engine / Exhaust modder. Allow me to introduce you to a concept called 'Specific Power Output'. This entity is the power generated by an engine for every liter of displacement.This can be measured in PS/liter. The following is a list in Decending order. I 'hope' you can figure stuff which answers your questions yourself when you look at it. Assuming that all these *can* be sold in India as on Feb-12-2012 whatever the emission norms be. To keep the dataset small, I have considered bikes only with 100+ Ps/l OR those who have Fi.

(Ninja 250R - 132.5 Ps/l - Not considered since this is a Twin Cylinder)
Duke200 - 125 Ps/l
CBR 150R - 119.46 Ps/l
Pulsar 200NS - 117.9 Ps/l
R15 V2 - 113.3 Ps/l
R15 V1 - 113.3 Ps/l
CBR250R - 101.2 Ps/l
Pulsar 220 DTSi - 92.7 Ps/l
ZMR - 79.8 Ps/l

The Pulsar 200NS must done have *Something different* to end up amongst the top 3 single cylinder bikes while still confirming to the *same emission norms* even though it is the only carb bike in the top 6. It is also *supposed* to be the cheapest among the top 6.

If you still don't understand, then may god help us all.

P.S.: We cannot *assume* that bikes with cat-cons (fitted from factory) removed by the owner still confirm to emission norms since in some countries, it is illegal to remove the cat-con for any purpose other than replacing it with a new one.

P.P.S.: I feel as if I am talking to SatyamZMA 2.0 .

that's great! Hope these bigger machines get into indian markets soon.

Thank you so much xBhp for this review,but anyone knows when it will be come to market?

yeah i get your point. But the thing is there will be more pulsars seen in the streets and rarely any dukes.

around april or may.

That's the way it should be and it's a very good thing for Duke owners.. after all they would also be paying extra also for "exclusivity".

Please allow me:

Yep all single spark engine in India (emission norms are different across countries) comply with emission norms BUT with a Large Catytic Converter attached in the silencer exhaust.

Catalysts inside the Cat Con (Catalytic Converter) helps convert the harmful by products of exhaust into harmless gases. But these Catalysts are expensive materials.. So the Cat Con costs a lot (Try replacing the exhaust of a Pulsar 220).

According to what I know, the Third Spark in the P200NS ensures more efficienct burning, thus eliminating the need of a "Large" Cat Con, because of the third Spark Plug, the Cat Con in the P200NS is a lot smaller.. which means money saved in manufacturing the Exhaust Can.


Hope this answers your doubt.