I want to install a stage one kit but don't know which tuner is better. Is the Fp3 worth the extra $100 and what product is easier to use. Thanks

 

I have both and the FP3 is easier to use. With the SEPST you need to buy the cables as well.

 

What bike are you installing it on?
If it's pre M8 my choice wiuld be the Fp3.
If it's an M8 your choices are almost entirely limited to the HD tuners if you want to keep the warranty.

 

Yes, installing on a 2017 street glide special...Good to know that an Fp3 would void warranty.. Is the install of pro tuner easy?

 

Yes to the warranty issue on the 17's and up with the FP3. The SEPST is easy in that you're downloading a pre-set map and doing auto tunes with the tuner. You do need the cables though.

 

I would not buy a HD tuner.

I have a power vision from fuelmoto, it is a great tuner.

 

Most agree with that.
But the new reality for the M8 engine is there's a very limited number of tuners (1 or maybe 2) that are not HD tiners that will not void the engine warranty.

 

if the bike has to to the dealer for service / warranty work, just reflash to the original stock tune.