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Discussion Starter #1
So I'll start off by saying don't crucify me, I've sifted through all the posts I can find but didn't really find exactly my symptom. It's not the clutch basket problem (Which I definitely have and will need to address), and it's not a constant flat spot in the factory tune as that would happen at all throttle positions.

What I'm experiencing is a slight lean out condition, or what I'm assuming is it running lean, anywhere from 2.5k-4 at cruising throttle or very light throttle. Just a light surging and if I let off the throttle when it happens some slight pops from the exhaust. If I power through it it's perfectly fine.

I have a Leo Vince exhaust system with the baffles out. If I put the baffles back in it definitely helps, but it's still there.

I'm coming from the land of carbs so I know a lean condition from tuning them, but my question is shouldn't this be well inside the stock tuning parameters? You'd think the FI would be able to account for the slightly more airflow an aftermarket exhaust would give. Is it a pretty primitive system?

Could this may be tight exhaust valves? Bike has 60,000km on it and the last owner wasn't aware of the valves ever being adjusted. I couldn't find any threads that explains the symptoms of a needed adjustment.

A power commander was always in the future for this bike so if this is just a classic lean out condition because of the exhaust and stock tune then I'll just bite the bullet sooner than I planned to.

Thanks guys, loving the V-strom life so far!

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First generation DL 1000's are running lean in that rpm/load range when new. If not in perfect tune, they will do exactly what you describe in stock form. Some even do it when in perfect tune! Install aftermarket exhaust and it can be worse.

Many have used the Power Commander to fix/help the problem. I never completely got rid of it on my Vee. There are problems with Power Commanders, and a drop in range/fuel mileage can certainly be one of them.
 

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Discussion Starter #3
First generation DL 1000's are running lean in that rpm/load range when new. If not in perfect tune, they will do exactly what you describe in stock form. Some even do it when in perfect tune! Install aftermarket exhaust and it can be worse.

Many have used the Power Commander to fix/help the problem. I never completely got rid of it on my Vee. There are problems with Power Commanders, and a drop in range/fuel mileage can certainly be one of them.
So it can be tuned out with a PC but not completely? Maybe I'll leave the baffles in until I can get a PC. Just about to spend my weekly motorcycle parts budget on a clutch basket from you!

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Wagoneer: A PCFC would help you solve the problem and much cheaper would be to get someone to "flash" your ECU to make the low end richer, that would solve the problem too. All this is predicated on your having an early DL 1000. You have the same symptoms as most other early 1000s, including mine. I now use a PCFC and it runs like a top, once tuned by someone who knows what they are doing.
I have, and also recommend, Realshelby's clutches. However, my lean issue, like yours, made me CRAZY. So I'd fix that first so at least you enjoy riding the bike with whichever clutch it has at the time.
Vees run lean at low throttle positions and rich when wide open. If you can correct the low end lean condition you can leave the rest alone. Have fun with it.
 

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Discussion Starter #6
Big B - I did, but honestly that thread is a mess and many posts just get lost.

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Bobbyvstrom - I think the plan is to get a PC and try one of the tunes that I hear are available on the site. If that doesn't clear it up, I have a local motorcycle dyno close to my house.

Btw, sorry for not quoting properly - tapatalk will not let me quote posts for some reason on this forum.

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Big B - I did, but honestly that thread is a mess and many posts just get lost.

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Hmmmm can’t say I agree with that, but yeah it’s a big thread for good reason. No question you are too lean, the map I made to share is one of the more popular and I too had Leo’s. There is another thread for maps, but unfortunately are overwhelming for the PCIII and not the PCV. Contact Fuelmoto...they’ll hook you up with a PC and get ya tuned.

Im sure your throttle bodies are also in dire need of synchronization.
 

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Discussion Starter #9
Well this turned into an expensive venture. PCV from fuelmoto on the way and whenever I get an invoice for a clutch basket going to order that as well. Found a good thread for the TB sync as well. Hopefully I can get all this done with minimal downtime. Was going to get some new aluminum hard cases but I feel this stuff is more important. I can suck it up and use the OEM cases for one season.

Btw for anyone who might stumble upon this thread in the future, I have a '03 DL1000. I'll make sure to come back to update for archive reasons.

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Could this may be tight exhaust valves? Bike has 60,000km on it and the last owner wasn't aware of the valves ever being adjusted. I couldn't find any threads that explains the symptoms of a needed adjustment.
Wagoneer, check your valve clearances regardless. Valve check/adjust is a maintenance procedure, not a repair procedure, and if you dont know they are within spec, you need to find out they are OK or not and adjust them accordingly.
It's possible that a clearance check/adjustment wont improve your driveability issue. Doesnt matter.
Diagnosis always starts with Engine Mechanical--> Engine Electrical-->then Fuel System in that order.
Never assume all is OK unless you know all is OK. It's easy to miss problems or potential problems otherwise.
 

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Discussion Starter #11
Wagoneer, check your valve clearances regardless. Valve check/adjust is a maintenance procedure, not a repair procedure, and if you dont know they are within spec, you need to find out they are OK or not and adjust them accordingly.
It's possible that a clearance check/adjustment wont improve your driveability issue. Doesnt matter.
Diagnosis always starts with Engine Mechanical--> Engine Electrical-->then Fuel System in that order.
Never assume all is OK unless you know all is OK. It's easy to miss problems or potential problems otherwise.
Yep, valve clearance will be checked. As well spark plugs and anytbing else I can change out along the way. The last owner had zero maintenance records, so I'm just assuming nothing has been done in the last 40,000km.

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If you can, cancel the order on the PCV. All you can use is a PCFC (fuel controller). The other features of the PCs have no application to a VStrom. PCFCs are a lot cheaper than the others. Save yourself some $$$. I don't know if the PCV has dials that allow you to tweak the mixture, separate from downloading maps, but the PCFC does and it's very handy.
 

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Discussion Starter #13
If you can, cancel the order on the PCV. All you can use is a PCFC (fuel controller). The other features of the PCs have no application to a VStrom. PCFCs are a lot cheaper than the others. Save yourself some $$$. I don't know if the PCV has dials that allow you to tweak the mixture, separate from downloading maps, but the PCFC does and it's very handy.
I kind of wanted to try out the switchable maps feature on the PCV. Does just the fuel controller have that as well?

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Maps are pretty easy to change on the PCIII. Switching maps frequently is not always going to tell you much. Fuel mileage is a big factor in some maps, and that takes some miles to see how it is doing. Some make bigger power on top, but run crappy in the lower rpms and lower loads. They tend to be a compromise.

Having one tuned on a Dyno is the way to success, but not always convenient or worth the money.
 

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I have a PC-V from Fuel moto and it made a huge difference. They will work with you on getting the map right for your bike.
A big thumbs-up on the Werks basket!
Keep us up on how it turns out!
 

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I kind of wanted to try out the switchable maps feature on the PCV. Does just the fuel controller have that as well?

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Yes. I have at least four on mine but love the first one that was recently done for the bike. You just dial in the map you want, once you have loaded it/them.
 

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Yesterday I put a Power Commander FC on my K6 Vee and set it to the preset map for my year bike. This morning I took it out for a 60 mile test ride through city traffic, on the freeway up to about 90 MPH, and on roads where you have to maintain 30 mph (the Vee used to hate cruising at low speeds). I was impressed at how smooth it rode. Now in town I can concentrate more on the traffic than how my bike's running. I had to idle it down about 100 rpm, but other than that it's plug and play.
 

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Discussion Starter #20
Holy smokes what a difference after the Werks clutch basket!! Terry you're a damn genius. This fixed EVERY negative aspect of the bike. No more knocking at idle, zero vibrations at any rpms, no more vague and crunchy shifts just a very satisfying clunk with each gear change. Just incredible.

I was expecting this to fix the vibration problem in the low RPM's but everything else is just a bonus and I wasn't expecting just how smooth it would make the bike. I don't know if I just had a really bad case with this particular bike or if you guys just need to sell this product better, haha. I can't believe this problem wasn't better addressed by Suzuki over the years.

I know for most people this seems like a big investment, for what's essentially a maintenance item, in not only money but time as well - 100% worth it.

At risk of sounding like a "but wait, THERE'S MORE" 4am infomercial, I'll stop here. Now if only my power commander will show up so I can fix this lean issue I'm going to be one happy camper with a beautifully running V.

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