capt

Hey Guys!! Need some advice on performance exhaust for my Cb1000R.
For my bike in particular ,will a slipon suffice or should i go in for a 3/4th decat or one with complete new headers?
What kind of power increase will i be looking at?Will i require a power commander to compliment the new exhaust?Also should i go in for a K&N filter too.
Appreciate inputs from all ends.

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sunilg

Query approved.

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Streetfighter

Depends on how much you want to spend. A slip on with decat pipe will suffice. Air filter would be nice but PC-V is essential. Akrapovic or racefit would be my choice but mind you, the latter is mind numbingly loud, my first choice though. Akra and racefit come with decat pipes. Not the CE approved for road use akra though.

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capt

Thanks for the input bro! Though as per the Honda forum ,there are a lot of views.Mostly recommend a PCV or PC3 for extracting max performance from the exhaust n decat but some have fears of engine damage due to the bike running very lean.
Well various manufacturers of the decat linkpipes provide for the lambda sensor ,so i dont see why the original ECU should not take readings from the sensor and adjust the map settings.
I'm being optimistic as dont wanna burn a big hole in my pocket.
I like the yoshi R77D which is a 3/4 system and eliminates the cat.
Any more suggestions.... welcome!!!

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Streetfighter

The PC is there to ensure you don't run dangerously lean. In an ideal world the ecu should adjust to richen the afr but do you want to take a chance with your hard earned money? Most bikes run lean with factory exhausts anyway.

The yoshi is a new entrant in the CB market, good reports but I still love the racefit growler.

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Carlitos

Most exhaust manufacturers do provide for a lambda sensor, but the stock or factory lambda sensors have a limited bandwidth which is sufficient for the stock ecu and an exhaust system with a CAT. PCV/PC3 can be purchased with an optional wide band lambda sensor, which works best if you intend on getting a custom tune.
Also, a lot of the maps available on dynojets website for various aftermarket exhaust systems are generally maps developed with the lambda sensor disconnected. I would suggest going for an exhaust system setup for which dynojet already has a map available since finding a dyno shop to tune your exhaust setup in India might be difficult. Safest option would be to get a slip-on and hook it up with a PCV just to be on the safe side. Slipon maps are generally simple to develop and there arnt too many factors changing and so the slip-on maps available are generally good.
Yoshi, Akra, Leo Vince, Racefit, FMF are all great exhausts.

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Streetfighter

Factory lambda sensors only provide readings up to a certain rpm range to pass emission norms which aren't measured at higher ranges. WB lambda sensor is needed if you plan on running auto tune.

Many slip ons eliminate the lambda and the PC for certain bikes comes with O2 eliminators. For the CB the eliminators aren't included, get them additionally. They are cheap.

Don't over complicate matters, get a slip on of your liking, if it doesn't eliminate the cat get an additional link pipe. Get a PC-V and load a map from dynojet's site matching your specs or ask someone on the dedicate forums to give you their map which matches your set up. For the CB, a quickshifter is only an additional 10-12k, you don't need the extra module which other bikes need thereby saving 25 to 30k.

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insaneroller

Leave the common ones aside & go in for a Hyperflo CF. they are Honda specific exhaust maker. Check it out. You will get proper maps & the O2 optimiser will work well with the pcV...

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capt

Hey guys!! Between a slipon and a full system,would there be an increase in power if i install a slipon or its just gonna make noise.
Does a slipon require a PCV ?

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Bladerunner

Go with the Yoshi R77D CF. Its a superb sounding exhaust.