PV or Thundermaxx Debate - Road Glide Forums
ECM/Fuel Management systems ECM/Fuel Management systems For Road Glides

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post #1 of 11 (permalink) Old 03-28-2016, 10:55 AM Thread Starter
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PV or Thundermaxx Debate

So I just picked up my '12 Road Glide that's pretty much bone stock. I have friends that swear by the Thundermaxx because of it's easy to use auto tune feature, but there's been some very good information posted here and some other places about what the auto tune feature lacks or "misses".

I'm not the most technical guy when it comes to AF ratios and timing and all that.

I've looked at the Powervision as well, but I feel I may not have enough knowledge to make it work right.

I am not a racer by any means, I just want my bike to hum and have a long life.

So for a guy like me, would the Thundermaxx be better? 1 guy told me not to get a Thundermaxx because if it shorts out or something, it takes a lot with it. True?

Wouldn't that be the case with anything I use?

What's the worst that could happen if it fry's? Or the Powervision?

Ughh so confusing!

Any info would be appreciated.

--2019 RGS--
--2012 Road Glide Custom--Gone But Not Forotten
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post #2 of 11 (permalink) Old 03-28-2016, 12:06 PM
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I run both the T-max and the Power Vision and for a stock bike or a bike with just some stage 1 mods there isn't a need for a auto tune tuner that uses 18mm closed loop O2 sensors.
The Power Vision will flash tune your bike ECM just fine and it has a auto tune feature that will use the stock 12mm O2 sensors.
Any tuner that has a true auto tune system that tunes the AFR in real time such as the Power Vision Pro or the T-max requires 18mm O2 sensors so you would have to either install 18mm O2 bungs on your exhaust or buy a 2009 exhaust for your bike, some aftermarket exhaust have both the 12mm and the 18mm O2 bungs already in them.
The Power Vision is your best bet, you don't need the Power Vision Pro or the T-max. JMO
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post #3 of 11 (permalink) Old 03-28-2016, 12:46 PM Thread Starter
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Great info for a guy with limited knowledge, like myself.

I have no plans of redoing cams or anything of that nature. I just need a "set it & forget it" type of deal. I just wanna ride.

I'll dig more into the Powervision for sure. I was looking at ceramic Fuel Moto pipe with the holes for both size O2 sensors, to possibly accommodate the Thundermaxx, so I could save some $$ by not having to go with that option.

I'm just touchy about maybe making incorrect adjustments.

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post #4 of 11 (permalink) Old 03-29-2016, 11:02 AM
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If you're just going to do the exhaust then the bikes ECM will adjust to the change without anything having to be done to the ECMs tune. If you do the intake mod along with a exhaust mod then you can get the HD dealer to do a flash tune to the bikes ECM and you don't need a HD or aftermarket tuner.
If you want to flash tune the bike yourself and be able to do a limited autotune than the Power Vision would be your best option


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08 FLTR candy red sunglo,with 2015 103 HO, V&H Dresser Duals with Monster Rounds, Power Vision tuner, Willy Shiny Wheels and Forks and a bunch of other stuff.
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post #5 of 11 (permalink) Old 03-29-2016, 11:48 AM
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If you like I can show you dyno graphs showing a 20+ hp/tq difference between a dyno tuned bike vs thundermax. Find a good tuner and ask him what he tunes. Follow his advise and get it dyno tuned. It will cost the same as the thundermax.
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post #6 of 11 (permalink) Old 04-08-2016, 11:32 AM
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I used TM with auto tune on my 2010 CVO FATBOY. It was easy to set up. Checked off the boxes of required info.. Downloaded the map. Bike ran flawlessly. The only downside is that if you have to take it in to dealer for work. You will have to put factory ecm back in it and it won't match your mods or have the trouble codes in it for Harley to read..
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post #7 of 11 (permalink) Old 04-08-2016, 12:33 PM
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Quote:
Originally Posted by pat123 View Post
If you like I can show you dyno graphs showing a 20+ hp/tq difference between a dyno tuned bike vs thundermax. Find a good tuner and ask him what he tunes. Follow his advise and get it dyno tuned. It will cost the same as the thundermax.
If you wanted to you could also find poorly dyno tuned graphs where the TM makes more hp/tq. Heck, you can find pics of dogs hugging cats. What does that prove other than you can find almost anything on the internet?

Yes a properly dyno tuned bike will often make a few (not 20+) more hp/tq than a well set up TM. Just remember that that the TM doesn't require you to pay $$$ every time you want to adjust your tune.

That said for the OP's requirements I would probably go with a PV from Fuel Moto. They will supply free canned tunes for life. Set it and forget it just like the OP wants.


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2011 FLTRU Because Momma wants me to be happy and because we all know deep down in our hearts that black bikes are faster! Thundermax TBW with Tman 555 tq cams, Drago's Dragula 2:1 exhaust and a Big Sucker. Lowered 1" with Progressive Monotubes and Ohlin 3-3s. SG rear facia, BAL-1, Daymakers, Diamond Plate Collection, 16" Madstad, J&M Rokkers with Bazooka 200.4 amp, Lenale fan, Harley Road Zepplin, 12" Wild Ones Chubby Outlawz and a G-Max 205-55-16 rear tire.
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post #8 of 11 (permalink) Old 04-08-2016, 12:58 PM
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If you wanted to you could also find poorly dyno tuned graphs where the TM makes more hp/tq. Heck, you can find pics of dogs hugging cats. What does that prove other than you can find almost anything on the internet?

Yes a properly dyno tuned bike will often make a few (not 20+) more hp/tq than a well set up TM. Just remember that that the TM doesn't require you to pay $$$ every time you want to adjust your tune.

That said for the OP's requirements I would probably go with a PV from Fuel Moto. They will supply free canned tunes for life. Set it and forget it just like the OP wants.


There is no reason to get upset. These are my dyno graphs off my bike with thundercrap and dyno tuned with tts.
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post #9 of 11 (permalink) Old 04-08-2016, 01:00 PM
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Here is the dyno graph from MY bike tuned with a real dyno tuner. The op is asking for opinions on the tuner and I'm giving him mine. That's it. These graphs are from my bike and not off your internet with dogs hugging cats lol. Anyways it's your money not mine.
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post #10 of 11 (permalink) Old 04-08-2016, 01:19 PM
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Originally Posted by pat123 View Post
Here is the dyno graph from MY bike tuned with a real dyno tuner. The op is asking for opinions on the tuner and I'm giving him mine. That's it. These graphs are from my bike and not off your internet with dogs hugging cats lol. Anyways it's your money not mine.
All that proves is that your tuner most likely doesn't know how to tune a TM. I never said you could not produce the graphs. I merely said they don't prove that the TM does not work.

If I show you a god awful graph (we have seen a few) made on a dyno does it prove that dyno tuning does not work? Nope, just that the operator was not very good....

Actually I am not sue why any one (other than a forced induction rig) would buy a TM and then get a dyno. That is what I really don't understand....

Also, in the end I stated that I did think that the TM was right for what the OP seems to want. Different equipment has different strong points and weak points.


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2011 FLTRU Because Momma wants me to be happy and because we all know deep down in our hearts that black bikes are faster! Thundermax TBW with Tman 555 tq cams, Drago's Dragula 2:1 exhaust and a Big Sucker. Lowered 1" with Progressive Monotubes and Ohlin 3-3s. SG rear facia, BAL-1, Daymakers, Diamond Plate Collection, 16" Madstad, J&M Rokkers with Bazooka 200.4 amp, Lenale fan, Harley Road Zepplin, 12" Wild Ones Chubby Outlawz and a G-Max 205-55-16 rear tire.
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