Question about 2008 Honda CBR 1000 RR Fireblade

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Low on power

I bought a brand new 08 blade and have fitted the following items:
HRC Steering damper
HRC Exhaust (Full system)
Power commander
O2 Sensor Eliminator

I have removed the:
Air tube butterflys
Exhaust valve and motor

We have dynoed the bike and it's only putting out 148Bhp at the back wheel the bike put out 160.2Bhp Stock. It has the engine management light on and I think that it is restricting the power, do you have any Idead why. I'm doing this to race in the british Superstock Championship so it needs to be tip top!!


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  • 33 Answers

Be sure pwr commander throttle position is calibrated and reading 0% when closed.

Posted on Feb 09, 2009

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4 Answers


the only thing spinning and vibrating at idle is the crankshaft, gear box , clutch and flywheel
if the power commander is electronic there may be a fault in it
best place for these faults is a dealer shop as they are aware of these sorts of problems

Apr 18, 2015 | 2006 Harley Davidson FLHX Street Glide

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Is there a steering damper on my 04 fat boy

They aren't fitted as standard, though some people have fitted them as aftermarket ad ons. (So if you had the bike from new, the answer is no, if you bought it second hand, check with the previous owner, though it should be pretty obvious if there is one). The general opinion is that fitting dampners to a Harley wrecks the feel of the bike and if you don't like the feel you have then you should check the headstock and if that's OK consider maybe changing your bars.

Jul 08, 2011 | Harley Davidson FLSTF - FLSTFI Fat Boy...

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Whats the best way to deal with the ommission sensor when fitting an after market exhaust to a z750 kawasaki

Most aftermarket exhaust have a boss for replacing the emoission, or o2 sensor, unles the system is totaly for race purpose, you could buy a dynojet o2 eliminator, remove the sensor completely and plug the eliminator into the wireing loom to replace it, this will make the ecu think it is still conected, you will get 1 with a new dynojet power comander, which you dont have to fit
but will improve running making it possible to re map the fuel injection,
You could allways carefully wrap up the sensor in insulation tape and strap itmto the frame
If your exhaust link pipe does not have a boss for the o2 sensor then it is for race use, you should buy the pipe intended for road use. Or have a nut fitted profesonally

May 04, 2011 | kawasaki Z 750 Motorcycles

1 Answer

New bike coming home tomorrrow, is there an o2 sensor or anything else that would making the installation of a slip on exhaust more difficult. The bike is a california bought 2010 fz1.

Most bikes seem to have O2 sensors these days and I'd say it's pretty likely you will have one. They are easy to find, just follow the pipes from the motor all the way to the exhaust and you will find it, they aren't small. A bit like a big spark plug usually with 4 wires coming off it.

It won't stop you using a slip on unless the slip on replaces the part of the pipe containing the sensor. A decent exhaust however should have a plug in it so you can install the O2 sensor if required.

The problem comes when you try to get it running spot on for the new pipe. Some sensors are just used to lean off the mixture during cruise and part throttle operations. For these ones you can usually get a kit that will plug in to the loom instead of the sensor and it will "trick" the ECU into thinking the reading is fine and no change is necessary. This will allow you to add a power commander or other fuel control type device and tune the engine accordingly.

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1 Answer

My bike was running badly so i had a plug change

If there is a problem with the bike missing, a power commander wont solve any problem. I would suggest find the problem and fix it before fitting the commander.
A miss may be in the ignition such as a coil lead, plug cap resister, plug cap.etc
If it always happens after it warms up, it could be jetting too rich.
A full service is a broad term and may not include tests of all items.
If they merely checked the air element and it looked clean, without replacing it, this may cause rich running.
Did they adjust valve clearances?
Does it have the standard exhaust?

Jun 06, 2010 | 2000 kawasaki ZX-12R

1 Answer

Have an 08 Triumph Speedmaster Efi model. Put K&N filter,triumph cone mufflers, power commander (PCIII) on and having trouble @ low speed around town, won't idle when cold and backfiring when...

the fuel is lean on the bottom, i dont know if the power commander can add some fuel or not. Why disconnect air injection, also if disconnected is the exhaust leaking.

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1 Answer

Motorcycle running a little hot

The fan comes on around 212, when you put a full exhaust, the bike needs more fuel it needs a remap. They say that the stock computer can be flashed but you need a power commander and a BMC race air filter

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Your check engine light is on because you are not providing the proper signal that used to come from the oxygen sensors. Install the sensors in your new exhaust (yes, drill it and put them back in), then connect the wiring correctly and it will work.

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Top speed 2005 Suzuki GSX R 600?

It depends on weither or not you have any aftermarket stuff put on the bike. My 600 will do 182 but that is with a power commander, acceleration kit, k&n air induction kit, k&n filter, and having it dyno tuned. My buddys stock 600 will do about 166 mph

Nov 10, 2008 | 2007 Suzuki GSX-R 600

1 Answer

Does changing the fuel map smooth the power delivery

A power commander won't help as I believe it is an issue with timing and not fuel delivery. I bought my 2000 and it came with a Power Commander. I tried messing with the fuel with little change in the results. I recently bought a 2002 ecu on ebay and swapped it in. It runs a lot smoother down low although the 5k-6k area feels a little flat so maybe I'll increase fuel there. I really should get it dynotuned at some point. If you're willing to swing the money, buy a Tuneboy instead of a power commander.

Nov 10, 2008 | 2002 Triumph TT 600

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