restricted cdi

dtr mkd

hi guys
do you know is it posible the cdi be restricted. i have swiss market dtr and it is very lazy and slow. cant get the revs over 8-9k. a guy said it is up to the cdi
thanks

Calum

Yes, although sounds like a powervalve issue to me.

Or rather, I'd start by looking at the powervalve as the easiest place to start.

dtr mkd

@Calum checked power valve and it is ok. when ignition on it is flush open then when engine start it closes. if i lock the pv open the bike has more pover in high revs but cant get more than maybe 9-10k

NINJA

@dtr-mkd If you want a fully derestristed CDi, then the best option is a Zeeltech, as there fully programmable and you can then run custom maps on your bike.

Calum

@dtr-mkd Nice, well you've checked that it's not the valve so depending on what year your bike is will determine how you derestrict it.

There is a guide on here I'm sure you can find it if you search for it.

dtr mkd

@Calum it is 1988 3BN bike imported from switzerland. any help how to derestrict it will be great as i am new with dtr's

andrewj1680

Being a 88 model I'm guessing the power valve isn't on cables the best thing you can do if not is take the cover off the powervalve on the left side of the cylinder head and rotate it 180 degrees and then refit the cover

Calum

@andrewj1680 On the later DTR's powervalves were fitted as standard, on the earlier ones it was my impression that powervalves were ONLY fitted to those that provided a the dealer with a bike license.

I was also under the impression that Joe Bloggs could go to Yamaha and buy the Powervalve to retrofit to their machines. But they just couldn't buy the bike with it fitted.

So it's possible that a factory fresh 88 could have YPVS.

I was also under the impression 88's were Mk3 DT LC's not R's.

I don't know anything about the LC's, except the Mk3's wer every similar to the R's but ran a different engine

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Previous generations of the LC ran front and rear drums with a completely different swingarm

andrewj1680

Calum he stated his bike was the dtr and I know my f plate dt125r was a manual power valve and the only restriction on it was the power valve

dtr mkd

@andrewj1680 guys the bike has a working servo for pv and when ignition on it does the cleaning cycle

andrewj1680

@dtr-mkd I'd take the cover off and check it's all moving as it should if so pin it in the open position and unplug the servo then try it again

Zrako

@dtr-mkd thats a lovely clutch there

dtr mkd

@andrewj1680 i have done that and when the pv is pined open there is a big impruvement in higher revs but not more than 9-10k

dtr mkd

@Zrako thanks. 30$ from aliexpress.com and it is a good improvement

Calum

Right to nip this one in the bud.

As said if you use the search button

https://dt125r.co.uk/search?term=restrictions&in=titlesposts

https://dt125r.co.uk/topic/576/restrictions

Have a look at @CYBER-NINJA's post...

DylanDT219

okay quindi come hai tolto queste restrizioni?

DT125R FORUM

restricted cdi