Mastertune vs PC V
Extreme HDF Member
Joined: Sep 2005
Posts: 11,615
Likes: 50
From: Baton Rouge, LA
The other difference you should see is better fuel economy. PCIII's and most PCV's are running open loop all the time. The TTS will allow your tuner to program closed-loop running, searching for an AFR around 14.2. You'll have a cooler running bike that's efficient on the highway.
I understand the ease of a PCV, but I've never been able to wrap my head around removing the O2 sensors. Never made sense to me to ditch a tuning aid and run off only a map.
I understand the ease of a PCV, but I've never been able to wrap my head around removing the O2 sensors. Never made sense to me to ditch a tuning aid and run off only a map.
Last edited by iclick; Oct 20, 2010 at 11:50 AM.
Tourer
Joined: Jun 2006
Posts: 399
Likes: 2
You can also add the Auto-Tune kit to the PCV, which also auto-tunes AFR's on the fly, sampling at 50x/sec. It may be a cheaper solution than T'Max and works very well. Be advised too that with non-TBW (cable) applications T'Max disables the ECM's knock-sensing feature, as well as the MAP sensor's full range of features, while the PCV keeps all on-board ECM sensors fully operational. I don't know if this is still the case with TBW bikes, but Jamie would know. He sells both.
Ultimate HDF Member
Joined: Apr 2006
Posts: 7,498
Likes: 19
From: East Alton, IL
"No-brainer"? Maybe for some but the TTS Mastertune leaves nothing hooked to your bike and allows the O2 sensors to do their job as intended by the guys that designed the engine. The TTS also has maps available that will match most common configurations. If you want to tweak it you can with their software. I also like fact that you can calibrate the speedometer and adjust the TBW throttle delay.
Elite HDF Member
Joined: Apr 2006
Posts: 3,948
Likes: 54
From: The Burgh
I went with TTS Mastertune. Just me but I didn't want an add-on part sitting under my seat. Why not just reprogram the stock ECM?
I installed the recommended calibration and the bike runs great.
Have you seen the Youtube video on how to install Mastertune?
Yes, it really was that easy!
I installed the recommended calibration and the bike runs great.
Have you seen the Youtube video on how to install Mastertune?
Yes, it really was that easy!
With the PCV, I just like the fact that it doesn't reprogram the ECM, but piggybacks it. If I unplug the PCV, nobody can tell that I have one, and certainly not HD who could threaten to void the warranty in case of an engine failure.
One of these days, I'll get the Autotune module. I don't anticipate major improvements over the canned map I'm running now but I'll get closer to the optimal settings for my bike. More importantly, it'll save me $$ over a dyno tune. Many guys I know have spent big bucks on dyno tunes for no noticeable improvements, some of them ended up with worse results than before and they had to dyno tune it again (and pay again).
Finally, I'd be curious to compare the mods to a canned map suggested by Autotune to the mods suggested by a good tuner for $300 or more. I bet the 2 maps will be almost identical. All things being equal, I'll take technology over one guy's knowledge.
Threads that are titled product XXX vs. PC-V always get my attention. As many of you know I have extensive experience tuning with both of these products as I work with them on the dyno every day. Both the TTS and PC-V are excellent products and are more than capable or providing a great tune. Saying either of these products does less than the other is better stated that they each do things differently and rather than say what TTS cannot do I would rather say what PC-V can. For example the PC-V has 240 tuning ponts per cylinder for fuel, igntion timing and AFR. With PC-V you can build maps individually for all 6 gears and by doing so this would give you 2880 individual tuning points (5760 tuning points if you use the Auto Tune module) You also have the ability to use a map switch to change between multiple maps, add dual Wideband O2 sensors with the Auto Tune module for real time tuning to the AFR you specify, and the PC-V also has a configurable input channel which allows you to setup your own table based on any 0-5V signal. These are all features that are not available with ECM flash based tuners. Another huge benefit with the PC-V is the broad range of calibrations that are available. For example, Fuel Moto has developed more maps for the 2010 Touring model alone than there are TTS calibrations for all twin cam models combined. That does not even take into consideration the maps that Dynojet has developed.
The best recommendation I can give is to do your research and choose a tuning platform that works within your needs and limitations. Most importantly use a tuning device that has the best support or that you have a willingness to learn. As always, we are here to help and if anyone has any questions just let me know
The best recommendation I can give is to do your research and choose a tuning platform that works within your needs and limitations. Most importantly use a tuning device that has the best support or that you have a willingness to learn. As always, we are here to help and if anyone has any questions just let me know
__________________
Jamie Long / Fuel Moto USA
The USA's Leader V-Twin EFI & Performance www.fuelmotousa.com
Contact 920-423-3309
Email jamie@fuelmotousa.com
Jamie Long / Fuel Moto USA
The USA's Leader V-Twin EFI & Performance www.fuelmotousa.com
Contact 920-423-3309
Email jamie@fuelmotousa.com
Outstanding HDF Member
Joined: Jun 2008
Posts: 2,132
Likes: 25
From: NorCal
Yeah, the multiple map thing is cool, especially if you want to run regular fuel and 100 octane, or NOS. And the PCV is definitely easier for the dyno operator to tune. No need to shut the bike down, load a map, restart and retest for results. When tuning at fixed throttle points one can make changes on the fly. Definitely shortens dyno time, and probably results in a more accurate map if the dyno operator isn't a perfectionist when using the TTS or SERT.
Last edited by JCleary; Oct 20, 2010 at 01:44 PM.
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