CBF125 with extra 15hp?

[Killer Rat]

Someone please tell me this shit ain't for real.

https://www.ebay.co.uk/itm/310374743126?ssPageName=STRK:MEWAX:IT&_trksid=p3984.m1423.l2649


I keep hearing it's not possible to boost above the original 11hp, although, i have fitted a scorpion exhaust as the stock one was made of toilet paper and have noticed better accelaration from 0-30
I don't think the bike could handle anything extra though and was certainly built with that 11hp in mind.
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No! No more talk! We go in! We kill! Kill! We kill 'em! They kill us, we kill them! Kill 'em! Kill 'em! Kill! Kill!
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cbf125 09', cbt passed 4/6/2010 - 28k miles - 1 major breakdown (stator)

[dungbug]

Will this void my warranty?

~NO our modules will not void out most warranties.

Does it increase or decrease my MPG?

~No, your gas mileage will be the same.

Will this damage my engine?

~Absolutely not. Since the altered signal will always stay within the manufacturer's specifications, there is no way for your engine to be damaged in any way.


Sounds like bollocks to me.
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CBT: Pass 25/06/2011 Theory Test: Pass12/06/2012 Mod 1: Fail 08/07/2012
Mod 1 Retest: Pass 15/0702012 Mod 2: Pass 03/08/2012
Suzuki GN125 (Sold) ~ Current bike: Yamaha YZF 600R Thundercat

[Matt-]

Their bullshit.

Same as the shit car one's you get on eBay, for £10

This is for car's but may also be for bikes - All they do is trick the ECU to think the air is colder so it place it put's more fuel into the cylinder which means power increase, but really all you get is it being Rich and running like a bag of shit

Matt
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RIP jack (wheelie king), you will never be forgotten.
Current Bike's - Road Legal TZR 125 Pitbike, Aprilia SR50R 2010

[symonh2000]

What they said... Just a 10p resistor which you fit in place of the air intake temperature sensor.


The main limit to engine performance is the amount of air it gets, tricking the injection into adding more fuel to the same amount of air will make it run rich as Matty K points out.
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Four strokes is two strokes too many.

[Matt-]

i know for a fact on car's you get burnt valve's, cylinder bore wash, cat's get bunged up and the Lamba sensors get damaged due to unburnt fuel.

However i am unsure that it would be a total NO GAINER you might experience gain's in lower gear's if anything, but it would not result in any big GAIN. if it did car's and bikes would have them fitted as factory

Matt
____________________
RIP jack (wheelie king), you will never be forgotten.
Current Bike's - Road Legal TZR 125 Pitbike, Aprilia SR50R 2010

[Killer Rat]

Cheers for reaffirming my suspicions about that, i have also seen oversize pistons advertised but dont think theres any extra benefit.

As you can tell, im stuck with a CBF125 till a permanent job comes along, i do plan on keeping it though as a backup/commuter.
____________________
No! No more talk! We go in! We kill! Kill! We kill 'em! They kill us, we kill them! Kill 'em! Kill 'em! Kill! Kill!
_______________________________________________________
cbf125 09', cbt passed 4/6/2010 - 28k miles - 1 major breakdown (stator)

[Matt-]

[symonh2000]

[ruck bodgers2]

not worth doing any tuning or modding to a cbf engine there not worth it .just enjoy it how it is because it cant handle much else
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throw it up the wall

[symonh2000]

Indeed, if you must have a fast 125 get a 2 stroke.

When I was into bikes the first time around ages 17 few people wanted 4 stroke 125's because they were difficult to tune.
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Four strokes is two strokes too many.

[Matt-]

It's pointless doing it with the CBF at Risk of puttin to much on the crank, if you have time & a deep pocket it's very possible to tune Amy 5 stroke, with a 2 stroke its normally just a case of remove and replace with performance part, exhausts, carbon reed blocks, bigger carbs, bigger intakes etc is just the case of small work. If you looking for a reliable 2 stroke to have some fun on I suggest a NSR125 full power (28bhp) the RS125 and mito are more powerful due to them having bigger exhaust ports, due to having such big exhaust ports, any damage to the cylinder head would resort in a top end rebuild.

Matt
____________________
RIP jack (wheelie king), you will never be forgotten.
Current Bike's - Road Legal TZR 125 Pitbike, Aprilia SR50R 2010

[Matt-]

Sorry for my spelling / grammar issues above, using the iPhone that doesn't to do what it's told !
____________________
RIP jack (wheelie king), you will never be forgotten.
Current Bike's - Road Legal TZR 125 Pitbike, Aprilia SR50R 2010

[symonh2000]

I like the NSR125, very nice bike and not tuned to the extreme.

My old RXS100 and RD125LC's were both very reliable back in the old days. The RD had been derestricted.

Had a TZR125 as well, and the engine was also reliable... The electrics were not though.


Part of the appeal of bikes to me is that they are easy and rewarding to repair, they also fit in your shed a lot easier than a car does so are ideal for those dark winter evening to keep myself busy.

A 4 stroke might be just too reliable for that.
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Four strokes is two strokes too many.

[Matt-]

NSR125,RD,TZR are fairly simlour engine wise, obviously the NSR has Nikosil Plating ( so may the RD but i am unsure ), these bike's all put out simlour power, however the RS & MITO have much aggressive exhaust porting meant for power not reliability.

Most 2 Stroke's it's normally a case how their looked after, if warmed up correctly, Treat it to Good Fully Synthetic Oil , Don't Hold it in red it will last double what a abused 2 Stroke would.

Yeah i agree

Matt
____________________
RIP jack (wheelie king), you will never be forgotten.
Current Bike's - Road Legal TZR 125 Pitbike, Aprilia SR50R 2010

[symonh2000]

The RD has a plain iron bore.

The RD and TZR were looked after and run on good oil. The RXS100 was my first bike bigger than a moped and was run on cheap Esso oil and thrashed from cold. (Didn't know much difference back then )

Never had an issue with it though.
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Four strokes is two strokes too many.