Generally speaking, what does it cost for a dyno run. Just a quickie to find out what the numbers are.

 

If you have Smart Tune, Auto Tune, or some other iterative DIY tuning system you'll be able to get your "tune" about 80% there. Maybe a little more. The dyno will get you another 15%. Closer to 100%. Is the difference noticeable? Sometimes yes, especially when you're not in closed loop range. Is it worth the money? I think so. I like knowing my tune is as good as it can get. But then I don't plan on making any additional mods either. So for me it's a one time shot.

 

About $50 +/- a few bucks. I have seen at events they can be half that.

 

This was exactly my view until recently. The PV has been out for about 1.5 yrs but was only updated with autotuning capability (online download) in Oct/Nov of last year. My view of tuning used to be as follows:

• Basic map from tuning library that matches your bike: 80-85% matched
• Smarttune from SEPST:85-90% (I used to tune alot with Smarttune)
• Dyno tune with competent tuner and many hrs on dyno: 90-95%

But my view has now changed dramatically. After 6 paid dyno-tunes in the past 10 years on multiple bikes with various efi engine builds, I was never "completely" satisfied with the dyno tuning as invariably it left at least a small stumble or 2 in areas of the map that weren't always picked up on the dyno or by the tuner. Don't get me wrong, the solid pro can do wonders for the performance of a bike's engine with enough time on a dyno but there are just certain situations they will miss because they are running the bike in a static situation on the dyno versus the dynamic road conditions we all experience when we ride.

Such as roll-on going uphill or ramp entrance to highway or switching over to 2-up riding. After all the $ and time there would still be a hiccup or 2 that wasn't major but was definitely annoying after spending the $ and adding hundreds of miles to my odometer that wasn't with me in the saddle.

Now with the PV that simply doesn't happen. Its the difference between computerization and a talented tuner on a carb engine. Eventually the technology surpasses the human talent. You don't see guys tuning their mustangs on a dyno because the on-board computer plus O2 sensors in a closed loop system continuously does the optimizing.

HD's closed loop EFI systems are there yet but the aftermarket is pushing the technology higher. The SEPST Smarttune capabilities only let's you tune in the closed loop zone of the map (for EPA reasons) so you still need a dyno tune for the upper performance levels.

PV Autotuning has now moved owner-tuning capabilities to a new level. It tunes across the entire range of performance from 1000 rpms to your rev limiter and from 20kPa to 100kPa.

No other tuner has had that capability with the stock O2 sensors. The seat difference is dramatic for a whole lot less $ and the flexibility of updating your bike's map whenever an engine component or exhaust is changed.

I mean no disrespect to the reputable and talented dyno-tuners that are out there. They can still do wonders for a bike's engine but technology has caught up and for most engine applications, dynos will soon be obselete. If you have to have a dyno chart showing HP and Tq, then a dyno "RUN" is still the only way to go. But if "TUNING" is what you need, my view is the following:

• Basic map from reputable tuning library that matches your bike: 80-85% matched
• Smarttune from SEPST or TTS Mastertune:85-90%
• Dyno tune with competent tuner and many hrs on dyno: 90-95%
• Powervision using Auto-tuning: 95-99%

For far less $ and more long term benefit, a PV will jump a bike's performance to it's optimum without all the drama, wear & tear and scheduling of a dyno tune and you get the added benefit of not wasting hundreds of miles (yes hundreds of miles for a good tune) on a dyno since the PV is tuning while you're enjoying time on your bike.

I have no affiliation with DJ or anyone associated with the PV. I'm just a guy that's experienced ALOT of dyno-tuning and ALOT of Auto-tuning and the new PV Auto-tune gives bike owners real capabilities that match and I believe surpass the results from a generally more expensive dyno-tune. Just one one rider/tinkerer's opinion so take it for what you think it's worth.

 

Just curious, how you came up with those numbers?

 

Nothing scientific. Just my personal observations and experience with 4 different dyno-tuning shops, 2 different tuning softwares, mutliple efi bikes, many multiple efi engine builds and almost 90,000 miles in riding efi bikes in the last decade.

The %s I shared are only based on one person's experience (me), so please feel free to discount them or use them as it best serves your needs. My purpose in sharing them is simply to be helpful to other riders that might be new (or not so new) to the latest tuning options in the market. Hopefully the views I've shared are taken in that spirit.

 

Sorry, I have to call BS on your numbers. You basically made up the percentage points you used to document your proof. Too many factors, the main one being the actual person doing the tune on the dyno. There are probably a lot better tuners out there then the ones who worked on your bike.

Throw your numbers at Doc and see what he has to say about that.

 

As I said, it's your perogative to call BS on anything or anyone. Before doing so, I'd recommend doing some research. Doc and all other reputable tuners out there will tell you that there's no way for them to tune every efi map cell for every situation since they can't duplicate every situation on a dyno. If you're comparing WOT throttle performance, I would agree that the best any tuning software will accomplish is matching what a talented tuner can accomplish on a dyno.

But there's so much more to a good tune than optimizing at WOT.

Think about it...almost every tuner-tech out there is tuning on a DynoJet Dyno. Aren't you at least a little bit curious about why the same company that builds and sells all the dynos that every shop uses has now developed a tuning device that the biker can use on their own to tune their bike without the need for a dynamometer???

My guess is that DJ knows the day of needing a dyno to tune an efi engine is quickly coming to an end and they wanted to be the first with the technology to use the bike's ECU, data collected from the biker's actual riding style and algorithyms in their PV that achieve the same optimization...consistently every time...not reliant on the skill of the tech.... in a small tidy package.... that no longer requires a dyno.

Read for yourself what the makers of the both the DYNOs in every shop use and the Powervision have to say. Get the facts, talk to reputable tuners and then make a decision for yourself. After much experience on both ends, its now an easy call for me http://www.dynojet.com/powervision/p...e-details.aspx (Click on Autotune - a product and a process)

 

Others have said what the difference between a "tune" and a "run" is. Obviously a run gains you nothing but I had a tune and got this.....

That was worth it.

 

What I'm calling BS on is the way you just pull percentage numbers out of the air and post them as fact. The only way to tell is put the same bike with the same mods and do auto tune vs dyno, then dyno each for the numbers and curves. Until that is done, there is no factual info in your percentage points.