I dont think the TTS is yesterdays news. The SEPST or SEST finally has the same abilities as the TTS to date. There are a few advantages with the SEST over the TTS one is the recording feature you hook the module to the bike and push the red button and the SEST starts recording. One other thing that the SEST can do that the TTS cant is adjust throttle sensitivity. I am sure there are some other differences but i am still researching both and still cant make a decision.

 

Bought that from Fuel moto first and before i have even plugged it in bought the new sest with smart tune and training cd . Very good support from Fuel Moto and i see that i will be on my own with the smart tune. HD is not looking at giving out too much help up my way so i called factory customer service and they swore that i can reasonably tune myself with smart tune. Well i guess i should be ok one way or the other. Hard to tell what to do with all these opinions. I'll bet they both are just fine for the average owner that does not want to pay for dyno tuning but can have it done with what he already has.

 

I agree not saying the tts is better thant the super tuner, but diffently not yesterdays news

 

Doesn't the TTS system use the narrow band O2 sensors? I would think you would have to run too lean using them. Or does the TTS run open loop?

 

Both. It runs open loop when it needs to, and closed loop also when appropriate.

 

PC III with a good(GOOD) dyno tune(TUNER)..............
...^----------------^-----------------^...