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Discussion Starter #1 (Edited)
Hi guys,

I own the restricted LAMS/A2 version of the Z650 (power restriction makes it 52HP/59nm).

I've been looking at how to derestrict it as I'm getting my full license soon. In the past on models like the Ninja 650 it has been as simple as removing a throttle stop and a looped plug on the ECU (photo I found online of a Ninja 650 is attached). The plug simply tells the ECU to use a restricted fuel map.

I took the tank off my bike today. The bolt on the throttle is there, which stops it at about 70%. It's easy to remove.

However the looped plug doesn't seem to be near the ECU, which makes me wonder if the restriction is achieved purely using the throttle stop on the Z650.

However on the side of the bike, next to the rear shock I did find a plug with nothing in it.. (photo attached).

I'm wondering if anyone else has had any success derestricting this model? Would it be safe to remove the throttle stop if the ECU does indeed use a restricted fuel map? Should I just leave it alone?

Any info appreciated :)
 

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Discussion Starter #3
Cheers for the link. Interesting, but it can't all be software as my bike has a throttle stop limiting it to 70% travel.
 

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Discussion Starter #4 (Edited)
Well I can confirm a couple of things:

- Removing the throttle restriction screw significantly increases the bike's performance. It's a simple torx head screw that stops the throttle at about 70%.
- It seems to be running a modified ECU map (which I had assumed anyway) because even with no throttle restriction, the bike's power doesn't seem to be on par with the unrestricted version

I've put the throttle restriction screw back on for now, because I want to put the bike on the dyno to see exactly what is happening with the air/fuel ratios when the throttle restriction is removed. I'm concerned that it won't be properly tuned for wide open throttle.

Will keep this thread updated.
 

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Well I can confirm a couple of things:

- Removing the throttle restriction screw significantly increases the bike's performance. It's a simple torx head screw that stops the throttle at about 70%.
- It seems to be running a modified ECU map (which I had assumed anyway) because even with no throttle restriction, the bike's power doesn't seem to be on par with the unrestricted version

I've put the throttle restriction screw back on for now, because I want to put the bike on the dyno to see exactly what is happening with the air/fuel ratios when the throttle restriction is removed. I'm concerned that it won't be properly tuned for wide open throttle.

Will keep this thread updated.

Did you do anything more with this? Has anyone taken their bike to the dealership to get the unrestricted ECU map?
 

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Restricted Ninja 650L MY2019

Recently purchased a Ninja 650L in green. The reason I purchased a Lams version was there wasn’t a KRT Green available in a standard Ninja 650; only black was available.
I will be changing the registration with Vic Roads once I derestrict it.
I’ve located the the throttle screw that will be removed but no idea where the ECU is located.
The dealer is unable to do this for me during the purchase due to their contract with Kawasaki.
I’ve checked the net asked a couple of mechanics but no one seems to know.
Can anyone please help?
 
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