what is SE 32109?

The SE tuner will marry itself to your bike once installed. Yes it is software only. Non-transferable. So, when you sell your bike the SE tuner will go with it and the next person gets it for free while you're out $400 bucks or so.

The Terminal Velocity looks like a piggy-back system, that looks like junk with only one o2 sensor to make it's adjustments. IMO.

Lots of people on the forums have and like the Thundermax.

 

Hi Bill
Why did you decide to go with the SE 32109 rather than Terminal velocity or Thunder Max? I'm still trying to decide what to put on if anything. I'm putting on 2 into 1 pipes next week and thinking about a high flow cleaner.

 

32109 is the part number for the SE. Thanks for the reply. I didn't know the TV had only one o2 sensor. Do you know anything about the Thunder Max? One dealer recomended it over the SE 32109 and another had never heard of it.

 

TTS? How did you decide on the TTS over other optioins and what were the other options you considered?

 

Probably right there, however, after all the ECU is a very primitive thing on these harleys being speed density and all. Not that it needs anything else on these motorcycles, it works well, just saying the aftermarket has been cracking much more advanced computers systems in the auto industry for years, and been doing a damn good job to the end user in terms of providing a means for the owner to be part of the data logging and tuning system reasonably. Locking the tuning device to a specific vehicle is just another way to make more money for the corp. Many aftermarket tuning device providers do it and is the trend to do it, still there are others that dont, making portability a plus. I'm glad the aftermarket is there to give us other options, many which are not controlled by national emission standards. Which brings up the point of just how functional is the SE tuner, in these days of catalytic convertors? I'd be willing to bet that it doesn't allow any adjustment to closed loop operation, which is not the case on many aftermarket tuning device. For this reason the SE would be the last tuner I would consider buying and offers the least amount of value IMHO.

 

I was talking to the 'tuner' at the local dealer recently. I started to complain about the lack of a Mass-Air-Flow system on the newer Harleys and he somewhat patiently explained to me that it's unfair to compare a car engine's airflow to a motorcycle's. Especially a Harley's

Harleys fire at an unusual timing rate for one thing -- Instead of a smooth 360 degree firing order, there is a 405 degree gap between the firing of the two pistons. Whatever. It's how we get our distinct sound and was what Harley sued over.

He explained that, with that firing order, it woud drive a car-type MAF sensor out its mind. It wouldn't know whether to **** or make a sandwich because the airflow would go up, then down, up then down. Especially at idle. Where a car's engine is much smoother and the airflow doesn't fluctuate very much, if at all.

I think he covered open-loop and closed loop. I think he said he could adjust both but my eyes started to glaze over after a few minutes of tech-talk. So I could have missed something there.

Anyways, he's dead-set on his belief in Harley's Race Tuner. But what else coud you expect from a guy that does only the SERT? I allow for that, but I will admit -- The guy knew his stuff. Or at least enough to bamboozle me.

Not sure that's difficult.

 

It you check over in the following forums you will find the consensus that today, for O2 equipped bikes, the TTS tuning kit results in the best tune, when used by either by a DYI or pro, as well as providing the best tuning tool set. Maybe $100 more than an add on modules, much less $$ and install time than auto or replacement ECUs.

https://www.hdforums.com/forum/elect...-injection-55/

http://harleytechtalk.org/htt/index.php/board,13.0.html

https://www.hdforums.com.au/Default....ics&forumid=27

You will see many post like these in the non sponsored forums:
“I use all the tuning products you mentioned. PCIII/V/SESPT/TTS Mastertune/Thundermax. And I work at a Dealership. If your local Tuner says he "cant" tune with TTS but can tune with SESPT, find another tuner. If you are competent in SEPST or old style SERT and claim you "cant" tune a TTS, the fact is this individual is probably not competent in any of the tuning products. Any Tuner in this industry worth his salt knows about TTS Mastertune. And, at least amongst tuners who keep themselves up to date and educated about the latest products, there is no debate about the best product and support. TTS wins hands down. SESPT is still suffering from stability issues and "smart tune" does not work as advertised.”

As far as the Dephi ECU lacking sophistication, that is probably BS, but what we know is that its the most sophisticated ECU available for the HD, and it works well on the street. A car or water cooled engine of more than two cylinders is an easy environment compared to the air cooled short exhaust environment that the HD is. What works well for a car does not work in the HD bike (the sensors either can't handle or lose accuracy in the variable and harsh HD environment). The HD engine configuration leads to the old saying that you can make a HD faster, but never fast... but it does excite the sole. If you want smoothness, precision and sophistication, buy a BMW or a high end Honda. Or a porsche perhaps.

The Thundermax system was the only high end story years ago, albeit expensive. But its old school ECU does not do ION sensing among others.

Now you can spend a lot of money looking for the best, but if you don't give a rats a#@ about the best and just want a satisfying ride that just puts a smile on your face, there are several ways to get there. Doesn't take much, if anything IMHO.