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.: XT660.com - The #1 XT660 Resource :. ( https://www.xt660.com/index.php)
-   XT660Z Mods ( https://www.xt660.com/forumdisplay.php?f=165)
-   -   Its Here At Last Kev's Tenere Fuel Mod ( https://www.xt660.com/showthread.php?t=11641)

Kev 14-02-10 22:30
Nice work mate.:3some:

Krusty 20-02-10 18:37
Fitted Dna stage 2 filters and the Kev mod today. Nice easy job which has totally transformed the bike. Fitted some Leovince exhaust last weekend which definatley let the bike breath a little more but, as others have reported, with the filters fitted the bike now pulls from lower revs and is much quicker to hit the rev limiter. Happy days .:icon_bounce:

Got to thank Kev for a great mod and super fast delivery from Aus.


Nick

Kev 21-02-10 00:43
Thanks for the feed back Nick.

Hope the Sun comes out for you guys soon so you all can go for a ride.
:sunny:

slugg 01-05-10 14:50
kevmod
 
Got my mod today.

had to remove the "bracket" on the fuel tank to get my hands down to the cable cause it was short.

everything went fine. Currently running only the DNA filter no DNA air box snorkel thing yet. Will use this when it arrives.

kev mod set to "3 o clock" feels like the engine works more "as it should do" Don't need to gear down as soon as the RPM get below 3k.

But I did'nt feel any "explosive" change over 3K RPM

So far so good ! thanks to Kev for all the help.

Kev 02-05-10 02:00
Quote:
Originally Posted by slugg (Post 127665)
Got my mod today.

had to remove the "bracket" on the fuel tank to get my hands down to the cable cause it was short.

everything went fine. Currently running only the DNA filter no DNA air box snorkel thing yet. Will use this when it arrives.

kev mod set to "3 o clock" feels like the engine works more "as it should do" Don't need to gear down as soon as the RPM get below 3k.

But I did'nt feel any "explosive" change over 3K RPM

So far so good ! thanks to Kev for all the help.
Nice work mate.

You need to fit the DNA snorkel mod to start to feel the HP gain, then crank the fuel mod to the 5 O-clock position.

slugg 05-05-10 22:09
kevmod
 
Did as you said Kev; cranked up to 5'o clock and inserted the DNA top.

After putting the kids to bed I took my favourit "close to home" trip. That trip includes a small "hill /top" (dont know the correct road word for that) I have always struggeled to find the perfect gear here. Up/down, up/down between 4 and 5.

With the filters and your mod it was only to keep the trottle in the same position. Without gearing down I could accelerate without any asmatic engine hestitation in 5. gear. Ofcause with the "thumper" feeling but that is now a romantic experience.

I love the "thumper" crusi'n in low RPM in turns and twist's. Feels as it should now.

All this has been written in the forum a lot of times but I just had to get it out :)

Kev 05-05-10 23:16
Quote:
Originally Posted by slugg (Post 128044)
Did as you said Kev; cranked up to 5'o clock and inserted the DNA top.

After putting the kids to bed I took my favourit "close to home" trip. That trip includes a small "hill /top" (dont know the correct road word for that) I have always struggeled to find the perfect gear here. Up/down, up/down between 4 and 5.

With the filters and your mod it was only to keep the trottle in the same position. Without gearing down I could accelerate without any asmatic engine hestitation in 5. gear. Ofcause with the "thumper" feeling but that is now a romantic experience.

I love the "thumper" crusi'n in low RPM in turns and twist's. Feels as it should now.

All this has been written in the forum a lot of times but I just had to get it out :)
The converted, well done mate glad you are enjoying the mods. :sbike:

slugg 06-05-10 10:08
wonder why Yamaha did not get the fuel/air as this initially. Can't be the emission /pollution case, they make 1900 CCM beasts that are fully possible to buy and ride everywhere.

Is there a limit for different cubic range ? 50 gr co2 for up to 750ccm, 70 gr co2 for up to 1200 ccm etc..

Or is it simply that the engine is not build for the extra power and would last shorter with this kind of changes ?

There must be some reason, the competiton is hard and the producers sure want to make their bikes as good as possible compared to other..

Kev 06-05-10 12:54
Quote:
Originally Posted by slugg (Post 128076)
wonder why Yamaha did not get the fuel/air as this initially. Can't be the emission /pollution case, they make 1900 CCM beasts that are fully possible to buy and ride everywhere.

Is there a limit for different cubic range ? 50 gr co2 for up to 750ccm, 70 gr co2 for up to 1200 ccm etc..

Or is it simply that the engine is not build for the extra power and would last shorter with this kind of changes ?

There must be some reason, the competiton is hard and the producers sure want to make their bikes as good as possible compared to other..
Alot is to do with emission controls & reliability, also learner legal regulations in some countries.

99% of motor manufactures over build their motors with reduced HP & Torque for reliability. There again there are 1000's of modified XT660's with only a hand full that I know of that have let go.

slugg 06-05-10 22:59
Quote:
Originally Posted by Kev (Post 128101)
Alot is to do with emission controls & reliability, also learner legal regulations in some countries.

99% of motor manufactures over build their motors with reduced HP & Torque for reliability. There again there are 1000's of modified XT660's with only a hand full that I know of that have let go.
Yeah, but why do they take away available power in the lower rews ? I should think that driving on lower rews should be more healty for the motor then driving on high rews ? could they not make the fuel / air mapping so that the bike has the power and smoothnes at lower rews and the same as stock on the higer rews.

Or can it be that it is not healty for the motor to run on lower rews ?


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