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Will probably go for a DBS pipe. Which is the best local made exhaust company here.

They have a nice new triangular carbon fiber muffler that looks the same a yoshimura. Will be 6,500thb for the muffler, or 9,000 for the whole system, so I'll go for the whole system.

They sound great on the ninja, but remember that it's a twin cylinder.

That's the old round version, the new triangular one is far nicer on the eye.

 

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The best exhaust company in the world can't hide the sound of a single cylinder.

 

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The lambda bung is on the exhaust manifold, so the O2 sensor will send the info to the ECU which will automatically adjust to keep the compression ratio the same.

This said, the stock ECU is likely to be quite limited in its ability to change it too much.

A few options will be available if the bike is running too lean (not enough fuel for the amount of O2). Have the fuel injection reprogrammed, aftermarket ECU with new fuel maps/powercommander/juicebox.

I personally will probably go for a K&N airfilter, aftermarket pipe, then have the FI reprogrammed to match the stock compression ratio. This service is rummoured to be available sometime soon here in Thailand - selected dealers will be equiped to to put different fuel maps on the CBR for only a few $$.

 

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^ So increasing the air flow at the intake - like an airfilter mod may cause it run lean, but an aftermarket pipe won't?

 

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The Bizumo sold by K-Speed in Thailand certainly aren't going to be made in Italy.

They're local Thai made pipes.

 

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Yup, butt on the seat review please.

 

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Thanks for the info. I'm thinking of going for the yoshi slip-on.

How new is your bike? It takes a while for the bike to loosen up. In the beginning I took it up 135kph, then 145, then 155, yesterday I hit 161kph indicated.

To me the biggest hurdle to speed is wind. On the same road I can take it to 155, then 2 days later it will only hit the high 130s due to strong wind.

 

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@RedLine Is that with the stock exhaust? I reach 156 with the stock

Yes, it's with the stock exhaust, I put eight holes in the airfilter cover - not the actual airfilter but the cover on the airbox, and reset the ECU. I also have the Honda touring windscreen which helps deflect wind up and over yer body. So maybe those help.

I'm 175cm and 75kg, and the bike has 19,000km on it. With new Pirelli Sport Demon tyres.

Not sure if any of those make any difference, but as it's the fastest I've been able to take it, previous was 160kph, something must. I did notice it was easier to get to the higher speeds - the high 150s with the touring screen on. Before it would almost always top out at around 155kph.

I find the wind and air conditions make a big difference to what speed it tops out at though.

Will also add that the bike feels amazingly stable and secure when pinning the throttle for an hour at a time. It just glides along in the high 150s effortlessly, you could almost take out a book and have a read.

 

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I bought a LeoVince exhaust for about 250 Euro. Now I drive a Japanese beauty with the sound of a Norton Manx. To loud for such a fragile motorcycle. But impressive it is.

Can you explain that a bit more? I put on a cheap Thai made full system and it made the whole bike vibrate to the point it felt like every bolt was going to pop out.

I'm thinking of getting a Yoshi slip-on but not sure if it will have any negative affects such as extra vibration. What did you notice with the Leo Vince?

 

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The system you put on did it mount in the same places? Most of the ones i have seen only seem to bolt on at the engine then nothing until the muffler strap.

they should have a tab to bolt onto the frame as well.

No it didn't. I just checked today and you're correct. The stock downpipe connects to the frame an inch or two before the muffler is bolted onto it.

May well have been that, thanks.

Just thinking though, do any of the proper, big name companies attach their full system to it? (yoshi, 2bros etc). Hmmm.

 

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Good info, thanks.