2006 R6 Mechanically Capable of 17,500rpm?

Motorcycle.com Staff
by Motorcycle.com Staff
Here's an interesting experience a reader had. Take it for what it is worth.--MO

So, a few days ago, on www.r6-forums.com, a thread was started about the new Remus PowerCone exhaust system for the 2006 R6.

In that thread, a link was posted to a www.motorfreaks.nl news article showing a dyno chart for that exhaust which showed the 2006 R6 revving to 17,500-odd RPM. Understandably, people were somewhat confused. BS flags were raised, people cried foul, claiming that Yamaha had given the European market a better bike, the works.



Here's that article, see for yourself (credit where credit is due).

http://www.motorfreaks.nl/index.php/prodnews/3328

Being somewhat curious, and in the mood for an investigation, I emailed motorfreaks, asking them what was up. At the time, I thought that *they* had supplied the dyno chart, as it looked similar to the ones they had posted of their own test bike (which only revved to 16,200). Naturally, I was excited.

The cool guys over at motorfreaks got back to me quickly.

Hi Patrick,

The Remus exhaust figures came from the supplier in Holland for thePowercone, these are not our own test figures, it is part of ourproductnews section a small sum of info that we recieve from the dealers.

The Powercone distributor can be reached at [email protected] I guessits easiest to ask them this question, I am however quit curious about theoutcome, if you can keep me in the loop?

Regards,

Robert-Jan Dijkman


So naturally, I fired off an email to Remus's distrubutor, post-haste. This was late Saturday, our time, so given that Remus is an Austrian company, they took until late last night (Monday morning for them) to get back to me.

This is what they said:

Dear mr. Moore,

Thank you very much for your e-mail. (also for the e-mail to Motorfreaksand Remus)Your remark is correct that the current YZF R6 2006 models produce16.200 rpm, like Motorfreaks tested.

The bike Remus had for developing the exhaust was a pre-productionmodel. Between the time Remus had the R6 in Austria and the introductionof the R6 the rpm was reduced by Yamaha to increase the lifespan of theengine.It happens sometimes that the manufacturer changes the bike at a latestage, unfortunetly this time after Remus received the bike.

I hope this awnsers your question, if you have further questions, pleasedo not heasitate to contact us.

Kind regards,

Bram PrinsenHoco Parts B.V.


Ding. Ding. Ding.

Yamaha fixed the ECU. The bike is fully capable of revving to 17,500, Yamaha just decided against doing so for purposes of engine life. Changes like these are understandable and common during the production of any machine, especially one that needs to be waranteed.

This explains a few things, or at least, allows us a few speculations. It seems reasonable to think that the snafu with Yamaha's marketing was caused due the marketing department getting facts about the bike prior to Yamaha's engineers (or warantee department) decision to lower the redline. Everyone went to press with the amazing 17,500 rpm figure, but when production test bikes came out, the cat got out of the bag, and Yamaha had to issue its buy-back offer. Why they didnt just state "we decided to lower RPMs for engine life", I dont know, but time has shown us that the Big Four are loathe to admit to mistakes.

One other point is also raised. If all Yamaha did was alter a piece of software inside the ECU (I doubt they altered the mechanicals of the engine that late in development), how long will it be until Dynojet or another enterprising aftermarket company develops a plug-in module that allows the engine to reach full song? It's been done with the Hayabusa's and ZX-12R's speed limiter and timing retardation, I cant imagine it would be much more difficult with an R6's fuel/ignition limiter.

Any MOrons who work at one of these companies (or perhaps a staffer who has contacts) want to take this issue up?

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Motorcycle.com Staff
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