[arcore]

You're making friends like crazy! Sounds like you've already got it all figured out. So, remind me why you started this thread? Sounds like you were just interested in getting others to agree with your ideas. Like others have said, results are all that matters. Have fun with your project...

I chose to go the route of having my ECU flashed...I have no dyno results, but am happy with the increased torque (much easier to pull up the front wheel with stock gearing). Have no idea about hp gains or losses.

Sent from my Moto Z (2) using Tapatalk

I have been in forums for years and I am exhausted by people who think without having true knowledge, instead I love doing it with those who do. He opened the topic to see if anyone had done it or tried to do it, and to see if it was worth the effort of documenting it for others. I am direct and clear, for many that is arrogance and they take it the wrong way when I say things they do not like to hear. Also the translation has a lot to blame, I write something and the translator does it in another way, it sounds ugly. And I do not have everything already solved, there is still a long way to go for that but as I said I already did it previously with my K6, I hope to be able to repeat it on my L6. I am not the enemy.

You're making friends like crazy! Sounds like you've already got it all figured out. So, remind me why you started this thread? Sounds like you were just interested in getting others to agree with your ideas. Like others have said, results are all that matters. Have fun with your project...

I chose to go the route of having my ECU flashed...I have no dyno results, but am happy with the increased torque (much easier to pull up the front wheel with stock gearing). Have no idea about hp gains or losses.

Sent from my Moto Z (2) using Tapatalk

I have been in forums for years and I am exhausted by people who think without having true knowledge, instead I love doing it with those who do. He opened the topic to see if anyone had done it or tried to do it, and to see if it was worth the effort of documenting it for others. I am direct and clear, for many that is arrogance and they take it the wrong way when I say things they do not like to hear. Also the translation has a lot to blame, I write something and the translator does it in another way, it sounds ugly. And I do not have everything already solved, there is still a long way to go for that but as I said I already did it previously with my K6, I hope to be able to repeat it on my L6. I am not the enemy.

 

[2thDr]

@arcore , I understand and apologize for reacting negatively. It just seemed you were rejecting all opinions that were different from your intentions. I don't think people were necessarily trying to say "don't do it", but just advising you to be aware that others have tried and failed to improve the V2 performance much. You did not let us know you had already done a lot of research before you kind of blew up at folks, figuratively. We are all coming off a long season of discontent. I have been on my phone and computer way more than my bike in the last year and it shows...I did mean what I said, good luck with your project and come back with results.

Sent from my Moto Z (2) using Tapatalk

 

[arcore]

No problem, as I say I understand that it sounds arrogant, it is not my intention, thanks for your comments

 

[PerazziMx14]

The seat of the pants dyno is more often than not fooling you. Most home tuners who "feel" the increase are surprised to find when the bike is on a dyno that the performance gains were not there. What they normally see if the spikes and valleys in the power curve. The peak right after the valley "feels" like a power surge but it isn't.

A well running bike has a deceptive linear power curve. The peaks and valleys are minimized and it fools you as you cannot feel the difference in the power peaks and valleys.

 

[arcore]

The seat of the pants dyno is more often than not fooling you. Most home tuners who "feel" the increase are surprised to find when the bike is on a dyno that the performance gains were not there. What they normally see if the spikes and valleys in the power curve. The peak right after the valley "feels" like a power surge but it isn't.

A well running bike has a deceptive linear power curve. The peaks and valleys are minimized and it fools you as you cannot feel the difference in the power peaks and valleys.

You're right, so I go to a local dynamometer to make comparisons. My feelings are usually correct

 

[arcore]

Today I was able to briefly test the bike with the throttle bodies installed, I did not have time to install the lambda probes to see the AFR on the road, so I do not know the real values, but it was just a question of seeing if it worked on the road, with everything provisionally installed. It works! although at this moment logically it is not providing more power than with the stock TBs, well maybe if in the range of 4 to 6000 rpm, it feels more powerful I wanted to do this test before modifying the cylinder head ducts to adapt them to the larger nozzles, and having not done it yet there is a negative step that impairs performance. I must also monitor the AFR to reprogram the ECU with the correct values, properly position the TPS and a lot of work, but as I say the change is possible. Although now for other reasons I do not know when I will have all that time, I'm sorry, the dynamometer will have to wait

 

[Spec]

...
Torque 69.95 ft-lb @ 6500rpm to 73.90 ft-lb @ 3700rpm

Torque @ 2200rpm jumped from 29.94 ft-lb to 49.45 ft-lb

This now kicks off @ 1600rpm not 1900rpm like it did before.

I was looking for extra torque in a more usable place and I got that.

Really that's better than stock?

Must be kind of abrupt off idle. Throttle response kind of touchy? 😁

Do you spend a lot of time riding in that low RPM range?

 

[Rolex]

It's the exact opposite, it will pull away from stopped with no throttle input even with the bride on the back and loaded up with holiday gear.

It was very early in the bikes life I fitted a throttle tamer to smooth things, out after fitting the PCFC I don't think it's required.

I don't like the RPM assist that is in the new ECU, I don't need any help getting the bike moving and the extra RPMS are unhelpful in the slow dirt.

Before the PCFC I didn't feel my bike performed like a true 1000cc bike now I do and I don't have to be up around 7000rpm to have fun it starts right off idle and it puts a smile on this old mans dial, not like the MT09 but enough to keep me happy.

 

[NormKern]

If you're going to enlarge the throttle bodies, be sure to enlarge the intake ports, valves etc.

Here's a better idea: Look at the bikes on the market and figure out which ones have the performance you seek. Buy the one you like best and concentrate on making it comfortable, fit you, handle properly etc. Leave the drive train alone.

Norm Kern

 

[arcore]

Yes faltosu fiu

 

[arcore]

I have already said that I will open the pipes, tell me why I should change the valves according to you. And another for which I can not do on MY motorcycle what I see fit

 

[2thDr]

I have already said that I will open the pipes, tell me why I should change the valves according to you. And another for which I can not do on MY motorcycle what I see fit

Are you going to do "porting" to increase flow properties?

Sent from my Moto Z (2) using Tapatalk

 

[arcore]

On this engine, only open the outside to adjust the nozzle step.

 

[arcore]

continue to advance, I have already opened the cylinder head ducts until they are fitted with the new nozzles, and I have installed a dominator manifold to which the threads for the broadband lambda probes have been welded, step by step.

 

[RichDesmond]

Interesting project, enjoying your descriptions. Are you planning on changing the cams?
I don't have any experience modding the Suzuki 1000's, but have done a bunch on SV650s. One those there's no real need to port the heads or increase valve size, the stock heads work fine for motors up into the 90hp range. That motor does respond well to cams with more lift and duration.
Are the valves in the DL the same size as ones in the SV1000?

 

[arcore]

Thanks, I have also had a vstrom 650 to which I mount sv cams, a nice experience. Indeed I plan to change cams soon later, I will use the SV but with a variation in the draft to make the behavior of the engine similar to the current one, I do not intend a large peak of maximum power but a fuller range throughout the range. Indeed valves including their springs are the same in DL and SV

 

[arcore]

I'm still working, even though I can only put in a few hours a week.