I was picking the brain of my local HD dyno tech today. He does both PC III and SERT tuning. He pointed out to me that only the PCIII currently has maps for the 2006 Dyna series with closed loop O2 sensors. The SERT has no canned maps for the 2006 Dyna.

His bias was to go with the PC III if you own a new Dyna. Although you can even everything out with the dyna tune with either the SERT or PC III, he seemed to think once you add the PC III, you only need about 2 hours of dyna tuning to get it right. With the SERT he averages about 3- 3 1/2 hours depending on what you've done to the stock bike.

At $65/hour dyna tuning, this makes the PC III more attractive to me over the SERT. I only have added SE II slip ons and will add the SE AC ( with a K & H ) filter with my 1000 mile service.

Anybody think he is telling me the truth about how long it takes to dyna tune a SERT? The cost of the SERT and PC III is essentially the same-where I would save money is in the dyna runs and tuning. I see about a $100 savings if I go with the PC III.

Moreover, he implied that HD could void your warranty if you've used a SERT ( or the PC III for that matter ). My dealership has never done that yet, but who knows? He also gave the advantage to the PC III in that you can remove it and your ECM looks stock-ie, no warranty issues.

Lastly, contrary to what I had thought, he demonstrated to me with some dyna curves with a sniffer that adding SE II slip ons without remapping the ECM is not a good idea. I had erroneously assumed you didn't need to remap until you added the AC. The bike is way too lean in this condition.

I am continuing to educate myself about EFI. I know this topic has been covered to some degree with the 2006 Dyna series. I am really interested in comments about the difference in time it takes to dyna tune with the SERT. There is no question in my mind that with either the SERT or PC III you must dyna your bike professionally.

 

Can't tell ya about the PCIII, but my local dealer quoted 3.5 hours on the dyno for the SERT. That's kinda interesting, because at the latus-harley-davidson.com website, for example, they quote "EFI bikes typically require 1.5 hours for Power Commander custom maps and 2.5 for Race Tuner maps". Lots of good info about dyno tuning on that site.

I just bought a friend's 2005 FXDI with SE II slip-ons but the stock air cleaner, which cramps my legroom. He got the remap when he added the slip-ons...the service manager told me he would not remap again if I added the SE AC. I think because Harley doesn't have another map that's close enough...that's when he started pushing the SERT. I'm looking at putting the Kuryakyn Twin Velocity AC on which slims the can down enough to make the ride comfortable for me. With the SERT install and dyno time, we're talking a lot of $$$...the PC is less expensive, too.

You're right about the SERT being married to the bike, whereas the PC has portability and can be removed if you need to go to stock. And yeah, any bike is going to run much better after the installation of a tuning device and dyno tune.

Void the warranty? My buddy told me that the parts guy at the HD dealership told him that even installing the SEII slip-ons voided the warranty! The service mgr. tried to reassure him that they would stand behind the bike, since he bought it there and they have serviced it...but they didn't deny the warranty would be voided.

I'm still researching and trying to learn more on tuning, too. While I save up some $$.

 

I would find a different dealer. Either he was lying or he just doesn't know what he's talking about, because there are maps for 2006 Dynas.

 

There's no way I would use a PC on a new bike.

First, you lose the advantage of the O2 sensors. That's a real backward step in technology.

You can not adjust timing curves, idle speed, or redline.

For the extra $75, I'll take the SERT any day. The additional capabilities of the SERT far outweigh the small differance in price.

If you really want an aftermarket fuel only system, I think there are better products out there. The PC people just have not had enough time yet to develope a good system for the new bikes.

 

Don't Know.


Depending on the tech is depending on how long it takes. Also with the SERT you can fine tune the bike alot more then the PCIII


What's a $100 when you spent how much for the bike and the aftermarket parts? LOL It sounds about right the time he is claiming.

You can remove it correct, BUT your bike will then be running VERY lean which means MORE problems then it's worth.

I have posted this many time and disagreed with anyone that said you could run just the exhaust with NOTHING else done. I tried this and got firsthand experience that unless you like ALOT of backfiring and popping on deceleration it's not the way to go!!

 

Well Bob, you are a little misinformed.

02 sensors are not the miracle technology you think they are. On the HD, they just control a very small portion of the map, mainly the idle, and just off idle. This is mostly for emmision reasons and is not a real closed loop system.

On the usb power commanders you indeed can adjust timing curves. You can even adjust them for individual cylinders just like you can map each cylinders fuel map.

As far as idle speed and redline, DynoJet just released the Revextend and fuel start for the HD usb models.
Now you can increase your redline to 6200 rpm without a $150 download from Harley. Any good tuning ceneter can upgrade you current unit without having to send it to DJ.
Fuel start may adress the slight cold start issue with the o6 models but I'm not sure.

here is the DJ blurb.

>>Harley Davidson REV X-TEND and START FUEL is now available

The Rev X-tend feature will allow your Harley Davidson (V-rod excluded) with a stock ECM to rev to 6200rpm. No longer is there a need to have your ECM reflashed by your dealer. Now you will have full control over your fuel curve up to 6200rpm with the PCIII USB.

This feature can be enabled on Power Commander III USB units with part #801-511, 802-511, 805-511, 807-511, 810-511, 811-511. To enable units currently in the field it will require a firmware update. The unit can be sent in to Dynojet for $20.00 and we will enable this feature and send it back to you. You also have the option of purchasing a firmware programmer and the necessary software which will allow you to update an unlimited number of units. This package is part #HDREV and can be purchased for $40.00.


Purchase the kit shown above with everything you will need to reprogram your Power Commander III USB.

If your serial number(shown in the upper right corner) is higher than 060201000001 upgrade has already been installed.

This upgrade is not for V-Rod model motorcycles

Purchase:

Part#: HDREV
$40.00

To access the Rev Xtend and start up fuel features open the Power Commander Control Center software. This software needs to be version 3.1.3 or newer.

While the software is communicating to the PCIII hit CTRL-F on your keyboard. This will bring up a window called Power Commander Features Dialog. Check the box next to the feature that you want to enable.

If you check the Extend Redline feature then your bike will hit the rev limiter at 6200rpm. A different RPM setting can not be entered. If you ever want to turn this feature off just uncheck this box.



If you check the Start-Up Fuel adjustment you will have the ability to richen or lean your fuel mixture during start-up without affecting the base map. This feature is normally only used on highly modified engines that have a hard time starting when cold.

To adjust the settings of this feature go to POWER COMMANDER TOOLS - START UP FUEL. This will give you two fields to adjust.

The first field is the Percent of fuel to add or subtract during start-up. By inputting a value here you will offset the fuel by a given percentage above and beyond the stock ECM and Power Commander.

The second field is the number of engine revolutions (or time) that this feature will be active for. A normal value would be around 150.

Want us to reprogram your unit for you? I

 

Airfuel, i got PC usb and love it,

 

I'm getting ready to go to the 95" kit on my 04 RK FF Special. When discussing this change with the dealer's service manager, he indicated that the PC III can NOT be used to tune each cylinder indivually. Instead, I'd have to change over to the SERT. Does anyone have the true skinny on this? I'd hate to spend another $450 if I don't need to. Thanks for any help

Bill

 

I just had my 06 FXDBI dynoed (PC III)and the tech told me that if I had a true dual exhaust he would be able to adjust and map each cylinder individually. I have a set of slip-ons so he
created a balanced map for my bike due to the exhaust crossover.