I just bought a TMax while at Bikeweek, had them install the map, and then I put on the bungs and did the install according to the written instructions (I didn't have access to the internet). Bad idea. I tried to follow the written instructions and eventually crushed the connector on my rear O2 sensor. I didn't realize this until about half way home from Daytona so I rode the rest of the way with the rear O2 sensor not working. When I got home I got on the internet and checked their Youtube videos. MUCH better. Too bad I didn't watch them first! A completely different set of instructions for my '06 Nightrain that made the job simple.

What an improvement over my PCIII usb! They were very helpful when I needed to diagnose what was going on and wanted to just get on my computer remotely to see what the deal was. Of course I didn't buy the extra adapter that would convert a serial cable to a usb cable so I couldn't hook up the TMax to my laptop. If you're buying one, get the adapter right outta the gate and buy the one that they provide. It works and is actually cheaper than the one that you can buy locally. While I was waiting for the adapter I got to thinking about the error code I was getting and figured out that since it happened on the road and had been running great in Florida during bike week that something broke after the install. I retraced the installation and found the crushed connector. I had to buy a new O2 sensor (not cheap, but they split the price with me since the instructions were wrong... thankfully) and a repair kit for the ECM cable connector.

If you aren't comfortable with ECM's, maps, and the like however, have them do the install. It will cost about $400 if you need O2 sensor bungs added to your bike but you may find it worth it.

Marking for the bungs is very difficult on the rear sensor on a softail because of the seat post. TACK THE BUNG AND PUT THE PIPES ON THE BIKE TO MAKE SURE THAT IT IS POINTING PROPERLY before you weld it.

No more popping on decel and the surging at low speed is nearly gone. It did cost me about 4 miles per gallon. Could I have just richened the PCIII and got similar results? Sure. But where you have to put a PCIII on a softail means that you will spend a lot of time reprograming the map because you will have fun hooking up the computer. You also can't get to the quick adjust buttons on the PCIII. Mine was dyno'd up in the mountains and I moved to the low country along the coast. Between the hotter weather and the denser air, it really started running lean.

No more of this gobbledygook with the TMax. It ain't cheap, but it was worth it to me. Anybody that wants a used PCIII in fine working order send me a PM.

C#

 

After trying several different fuel adders and a SEPST with dyno tune, I decided to try a Tmax with Autotune. Never ran so good!

 

i also put on a tmax auto bike runs like a champ ,but i find myself riding and then comming home and pluging it in aond letting it read the learned fuel readings and letting it do the adjustments,every other day i guess its my ocd ,does anyone else do this , should i ride for like a week and then do that , also i do get one diagnostic code of some kind of eco or ego faliure on rear cyl, on the tmax control center,how doi fix this thanks

 

If you check the diagnostics while the bike is shut off, the EGO will always come up and should be a clock ... it throws a code when O2 is 19.36 ... the approximate value in the atmospere ...!

If you run the diagnostic check while the bike is running, it should go away ... otherwise, check the manual ... it could be a bad sensor if it only does it on one O2 sensor ....

I've had my TMw/AT for almost a year and am a true believer ....

R/
'Chop

 

Don't be making changes every time you go for a ride, tempting as it is. The TMax Control Center may tell you to run auto tune every 100 miles or so, depending on your settings but that's too soon IMO. I wouldn't worry about any changes or run auto tune until you have at least 300 miles on the map you're running.

 

How do you know if it's installed properly when you think your finished installing?

 

I just bought a 05 Heritage and want to install the Thundermax. Do you have any pictures for the location for the bungs? I can't find anyone that sells and installs locally so I'm going to have to mark the pipes and bring to a welder to install.

 

I have 08 roadglide with the tbw thundermax tru duals reinhearts ,and was having cold and hot start issues running a 16 cell Ballistec Battery . Fixed the problem the brand new battery was bad ,put back Harley ome battery and reset the thundermax and now it fires right up hot or cold !! The ome battery i put in is brand new.