ECU Remap

[Smithy404]

Hello all

Had the Z9 ECU flashed / dyno tuned today.

Pair valve delete + block of plates. Full akrapovic system + K&N as far as mods.


Bike is running a lot smoother and the power is definitely more linear - progressive as opposed to snappy on and off throttle. The aggressive engine breaking is reduced which is what I wanted.


Stuck with a check engine light which was reset but has since reappeared. Will take it back to the garage and the guy said he will have a look at what’s causing it. Anyway here’s a graph print out, I can’t make much sense of it perhaps you can.

The chap said it’s 129 bhp to the wheel - which is about what I expected given the exhaust and filter.


Note - he popped the original filter back in the K&N box as well as the pair valance and all its pieces. I noticed the small bottle of grease that comes with the filter was still in there and looks unused. Im wondering whether he used any around the filter at all? Could this be the cause of the check engine light?

If he did forget then it’s no big deal, I’ll get him to do it it when I next take it in for the CEL, the shop was very busy.

[3alfa3]

Originally Posted by Smithy404

I noticed the small bottle of grease that comes with the filter was still in there and looks unused. Im wondering whether he used any around the filter at all? Could this be the cause of the check engine light?

No

[Smithy404]

Guess I don’t need to worry about that then.


I’ll stop assuming the cause and just wait for him to diagnose it. Hopefully it isn’t anything to worry about. 

[Smithy404]

I know I said I would stop assuming but it’s 02:25AM and I’m awake pondering the cause of this damn CEL. Thinking so hard, I know exactly when the eml light came on or at least when I noticed it, it was right after my piss poor attempt at a burnout which I did mange for exactly 2 seconds.

I will try what has been suggested in other posts before having to resort to taking it to the garage again. I’ll try the riding it above 25mph for 5 minutes turn off and repeat method - hopefully that’ll work.

[3alfa3]

Originally Posted by Smithy404

I know I said I would stop assuming but it’s 02:25AM and I’m awake pondering the cause of this damn CEL. Thinking so hard, I know exactly when the eml light came on or at least when I noticed it, it was right after my piss poor attempt at a burnout which I did mange for exactly 2 seconds.

Burnout and wheelie can cause KTRC error on 2020 and newer. Don't know about 2017-2019.

Originally Posted by Smithy404

I will try what has been suggested in other posts before having to resort to taking it to the garage again. I’ll try the riding it above 25mph for 5 minutes turn off and repeat method - hopefully that’ll work.

Try it, if burnout triggered CEL, that Method should clear it.

Here is procedure:

Originally Posted by Fogg72

Start the bike, let it idle for a minimum of 30 seconds, then go for a 10 minute ride, 5 of which need to be at a constant speed of more than 40 kph (25mph), then stop and switch off.

 You do not need to let the bike cool down, repeat this another 2 times and you're done.

 ( if you drop below 40 kph at any time within the 5 minutes you need to do another 5 so choose the road wisely, highways are perfect.

Each ride must total 10 minutes minimum, (minimum 30 second idle + minimum 5 minutes constant >40 kph, + X minutes other riding = 10 minutes total ride, (it doesn't matter where the 5 minute part is within the 10 minute total, beginning/middle/end, it's all good)

Enjoy.

[Smithy404]

I rode until I couldn’t feel my fingers or face and my acorns retracted into my body for warmth and preservation presumably.

Followed the steps as suggested to no avail 

Anyway managed to find the error code by reading user ‘Frontline’s post which was helpful. 33 is the error code she’s showing and after a little searching I feel it has to do with the 02 sensor which would make sense since she’s just been flashed. 

[3alfa3]

Originally Posted by Smithy404

I rode until I couldn’t feel my fingers or face and my acorns retracted into my body for warmth and preservation presumably.

Followed the steps as suggested to no avail 

Anyway managed to find the error code by reading user ‘Frontline’s post which was helpful. 33 is the error code she’s showing and after a little searching I feel it has to do with the 02 sensor which would make sense since she’s just been flashed.

Yes, Service Code 33 is O2 sensor. It was probably not deactivated when ECU was flashed (i suppose 02 Sensor is removed). That's a rookie mistake for person who flashed ECU.

[Smithy404]

Thank you 👍🏼 yes I believe that is the case.


I’ve bought a blanking bung for the exhaust and a 02 sensor delete plug for the harness where the 02 plugs in from Kawasakibrad.

From what I’ve read the 02 is still making corrections for the exhaust/ air filter which is basically affecting the new tune because it’s trying to correct it.

Would it be worth having it re-flashed after fitting the kit?

[3alfa3]

Originally Posted by Smithy404

Thank you 👍🏼 yes I believe that is the case.


I’ve bought a blanking bung for the exhaust and a 02 sensor delete plug for the harness where the 02 plugs in from Kawasakibrad.

From what I’ve read the 02 is still making corrections for the exhaust/ air filter which is basically affecting the new tune because it’s trying to correct it.

Would it be worth having it re-flashed after fitting the kit?

Dont know, but i think no delete plug (resistor) is needed on the Harness and as i understood, delete plug with resistor is not fooling the ECU on 2020-2023 Models (except maybe plug to isolate connector from moisture), but ECU must be "told" (through flashing) that O2 sensor is deactivated.

[Smithy404]

Interesting, I don’t see why he wouldn’t have disabled it in the ECU prior to mapping but I will find out, awaiting his reply.

The kit is on the way anyway so when it arrives and it’s installed will update.