Power commander

[squadron leader]

Can anyone tell me if a power commander would cure the slight misfire on my K7, it only happens in low revs at low speeds, some research suggests a power commander will cure this.
Can anyone comment on this.

Paul

[tallpaul]

My personal opinion is if a power commander fixes it then it's masking another problem. My brother has a K6 vee and it doesn't misfire.  There is documented evidence of dodgy ignition coils on the vee which can lead to serious issues with glowing exhausts, melted plastics and the occasional fire. I would check the ignition system before throwing money at a PCV5 or similar.

https://www.v-strom.co.uk/smf/index.php?topic=37828.0

[Bobmc]

I have a power commander on a K6. I had it set up properly on a Dyno but no matter what we did we could not get the fuelling right below 3000 rpm. In the end we just left the original map up to 3000 rpm and then mapped it from there. It is great once the power commander kicks in. The problem below 3000 was over fuelling and we could not get it dialled out and get the bike to run all the way through the Rev range with the new map.

[tallpaul]

If there is a flat spot because of lean running then adding fuel would fix that. The OP describes a misfire, which I would put down to ignition. Not saying it can never be down to fueling, just that the the most common causes of misfire is down to ignition. I would be sure that all the other systems were working correctly before buying an expensive piece of kit just to find it still misfires because it was the ignition all along.  I have a PCFC for my bike which was fitted when I bought it.

[wurzel]

Paul, I think, gives strongly good advice here, get everything checked out, ignition, tps,crank position sensor, electrical conections/ earths, and perhaps then injection bodies and related plumbing.

[Ianmc]

Basics first, are the throttle bodies still in the correct position, its a fairly common fault I have been told and the bike will still run if one of them is out of place

[squadron leader]

Hi blokes,  thanks for the Replies,  the bike runs fine at cruising speed, it just seems to stutter when doing 30 mph at around 2500 rpm, and not all the time then, I fitted new spark plugs and noticed the rear was sooty but front was OK, trying to find out if it's either ignition or fuelling,  someone out there must have had something similar,  need to know if they found the problem or not or improved it or is it just the bike, nothing stands out to me at present.
Regards
Paul

[aggressivesk8r]

Hi Paul,
I had this same problem on a K5 I bought new. It happened at around 2500 - 3000 revs.
I was told it was a characteristic of the bike . I fitted a power commander and it did help the problem but did not eliminate it, so considering the expense it wasn't,t worth it. I sold the power commander and fitted a TRE and this worked every bit as well at a fraction of the cost. Eventually my Suzuki Dealer did put the bike onto what they referred to as a Yoshi Box, which I believe remaps the low down feeling and this did work!! Hope you get it sorted as I know it's very off putting, especially when lent over on a roundabout.
Cheers Ken

[kwackboy]

Similar issues here on a K6 Vee I used to own.

After checking, adjusting and tinkered everything possible I finally gave in and bought a used Power commander 3.
It totally transformed the power delivery and the low rpm what I'd call an annoying "cough cough" disappeared.

The tuner at HM racing said that if I'd had a later power commander, which allow even better adjustability, he could have got the mixture ratio line even better .

Maybe I was lucky   

[kissofdeath]

if you go down the TRE route, speak to Bigpie on here, he can make them .
plus I do recall somebody on here having a yoshi box but not sure who it was 

[squadron leader]

Thanks blokes that has helped no end, I must admit I don't know what a TRE is but I will attempt to message bigpie later today to see if he can help,  once again thanks
Paul

[aggressivesk8r]

Hi Paul,
Its a Timing Retard  Eliminator. Apparently the timing is advanced low down in order to meat EU emissions.
Just a resister put into the wiring.
If I can fit one anyone can!!
Cheers Ken

[hotbulb]

There are details on a DIY Yoshi-box emulator here...
https://www.stromtrooper.com/threads/my-own-take-on-the-yoshi-box-emulator.98985/#post-1103393
Probably not too difficult to make for someone skilled at electronics........ not me,I hasten to add. And the usual disclaimer, I've not tried it (and I  don't have a 1000 VStrom anyway), so can't vouch for its effectiveness.

[STORMY]

Apologies for jumping in on this thread but it’s kind of connected.
To the uneducated (me) can somebody put me straight on this TRE black box thing
2017 A8 1k
The bike runs fine, but at slow speed exhibits a very on / off jerky throttle, I end up slipping the clutch to smooth things out. I suspect this is because it runs lean and needs to meet emission targets (as previously explained).
So this box from what I’ve read plugs in underneath the tank, needs no set up, and has selectable mapping.
It does state on their website that it does involve the cutting of 1 wire (which one), and derestricts the top speed in 4th gear (never knew it was restricted why?)
Costs about 90 sheets
Does it really do all the above, will it solve my on / off ness in the throttle??

[aggressivesk8r]

Hi,
I fitted a TRE and it helped with the "cough" between 2500 - 3000 rmp. The throttle response always required a gentle touch at low speed/revs and some clutch slipping.
I'm not sure how you would tackle the snatchy throttle response.

[bosnjo]

I have X-TRE. Had it on '14 DL1000 and now have it on '18 DL1000. It does require cutting one wire, as per instructions that come with it. For me, it helped a lot with low rpm surging and engine braking comes just a bit more progressively. I use map "5" as I find it smoother then "4" recommended by manufacturer.

[STORMY]

Thanks Aggressivesk8r & Bosjno, (we have the same model) and it would seem from how you describe the benefits it’s worth a punt. Not keen on snipping wires however, but I assume it’s fit and forget - thanks 

[bosnjo]

I've done it at the dealer. Bike was with 2 years warranty and was only one week old. As I didn't want any trouble with warranty, I let them do it. They've done it the same way I had it done on my previous '14 model. Cut the wire, solder it with heatshrink tube to isolate. As you say, fit and forget.

[STORMY]

Mine just rolled out of warranty 10 days ago so if I make the purchase I’ll give it go myself  - sounds an easy fit, what’s the worst that can happen .

[Rusty Nuts]

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