Tuner Question

[mdi]

Geezer here. Still waiting on surgery and new Freewheeler. While researching upgrades and mods for my potential new Freewheeler, I came across references to "tuners" and "tuning modules". Are these the same as diagnostic scan tools? (which I used quite a bit in my job as a Auto/Heavy Equipment Electrician) Or do they actually program/reprogram the engine computer ECU?

 

[pwhoever]

Yes, they actual reprogram various functions. They can be used to achieve more output from engine, etc...

 

[Notgrownup]

It’s not a Scan tool like an OBD scanner at the auto parts store. It will adjust the air fuel ratio on your motorcycle. It is almost necessary if you change the slip on pipes and the air cleaner on your motorcycle, it will make it run less lean.

 

[mdi]

So the Vance and Hines FP4 (and others like it) would just reprogram the ECM after any modifications affecting the fuel system?

 

[New Orleans Kevin]

Different tuners allow you to do more fine tuning . I have the power vision tuner and it allows more things on the bike to be adjusted than the Fuel Pak or Hd Se tuner. Different techs like different tuners

 

[Notgrownup]

I decided on the Power Vision.

 

[HDUSA1]

I have the Dynojet Power Vision PV-2B. Bought it from Fuelmoto. They have an extensive list of dyno tunes. If you buy the tuner from them, as you upgrade exhaust, air cleaner, cam, etc, they will send you an updated tune to match. It has a couple other features I like. It will read and clear fault codes, I can put multiple tunes in and switch easily, I can see live engine parameters as it’s running, and it lets me change idle speed.