depends ,do u like to tinker or plug and play, future upgrades? plug and play with no plans for more than stg 1 pcv.

 

Same here the PCV works fine but I'm starting to regret not spending the extra cash for the PV, no piggy backing, or having to tuck in a wire harness.

 

The word "autotune" has evolved into a nebulous term since it is used to mean different things by different manufacturers, and even among different products made by the same maker. In the past I thought of "autotuning" as the ability to run closed-loop (AFR regulated in real time by O2 sensors), and in that context the answer is yes for both PV and PCV. To do this with the PCV you'd have to buy the Autotune kit (AT-100) with its wideband O2 sensors, but for the PV you can only run closed-loop with the stock narrow-band O2 sensors, at least for the time being. The PV is constantly evolving and I expect to see a WB closed-loop kit made available for it in the future. You could theoretically run a PCV in closed-loop with NB sensors, but it isn't designed to be used this way, isn't recommended, and I don't know of anyone who has done it.

The PV is compatible with the AT-100 but only as an open-loop device, as the WB sensors are not capable of communicating with a stock ECM, only to create datalogs which can be used to tune with computer apps provided with the unit (WinPV and PV Tune).

To make things even more confusing, DynoJet has elected to use the term "autotune" to describe its new feature of creating a tune from within the PV without computer software. So you can see how the air gets cloudy when the term is used these days. If this isn't clear feel free to ask questions, and with a little luck I or someone else may be able to answer them. There is also a good sticky thread on the PV in the ECM-Tuner section of HDForums.

As for which device is "best," it would depend on what the rider wants to accomplish, as they are quite different in the way they work. If you like to tweak and tinker, the PV will give you more things to play with, which includes all tables within the ECM. Some of these you should alter only when you are wearing your brave suit, as they can cause problems if you screw up. I can speak with experience on the need to be cautious, but entering the danger zone of ECM tuning can be safe if you take precautions, like keeping backups of all tunes.

The PCV is a safe tuning device, but it isn't lacking in useful features. It just doesn't do as much as the PV since it can't alter anything in the ECM and acts only as an interim device that receives data, alters it, and sends it along to do its thing. The PCV is about $200 cheaper than the PV but the latter gives you a useful display unit that can be used to monitor ECM and other parameters, as well as store tunes and allow datalogging without toting a running laptop computer around while riding.

I started with the PCIII, then moved to the PCV with and without AT, and now have the PV that I'm using with that AT kit. I like the PV and wouldn't go back, but I think most riders would be fine with the PCV since it is plug-and-play and transparent. FWIW I'm running an open-loop tune and use the WB sensors only to create datalogs for tuning. Buying either tuner from Fuel Moto will insure a good tune is installed and ready to go, which is no small advantage IMO, and their prices are very competitive. Their customer service is second to none, too.

 

Check out Power Vision site they have an explanation about how both work and their limits.