H
heliharley
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Which is better the power commander or SE supertuner?Can I fit it myself and tune to a standard supplied map or is it better going to a dyno shop?
Which is better the power commander or SE supertuner?Can I fit it myself and tune to a standard supplied map or is it better going to a dyno shop?
Umm, I might kinda see the point of the Thundermax for starting from scratch but I really don't see you are going to get much from it as a replacement. Though from a "its mid-winter and I want to spend some money on something to play with" point of view I'm right there with you.Something to consider is how often you will be changing bits on your bike. If you are only going to make a few changes and then leave it, all well and good. However, if you are going to be making regular changes them there are better alternatives.
I'm about to ditch the SEPRT and stock ECU on my XR1200 for a Thundermax auto-tune system. One a base map is loaded with a target AFR it will constantly readjust the settings to suit. Periodically you can reset the base map. You can also get the bike dyne tuned to get it spot on but the system has the advantage of doing most of the work for you.
Umm, I might kinda see the point of the Thundermax for starting from scratch but I really don't see you are going to get much from it as a replacement. Though from a "its mid-winter and I want to spend some money on something to play with" point of view I'm right there with you.
With the SEPST you put on a canned map and then use Autotune (if you have the software and leads) to get a pretty good tune. You can also get it dyno-tuned and get it even better.
With the Thundermax you do the same. Its just a bit better at keeping the target AFR, but that's just a target AFR, its not what is the best power, you need a dyno to measure that.
I doubt you'd really get a better tune from either.
Sounds like a plan. Post how it turns out cos I'm definitely interested.Then we agree to differ on some elements and agree to agree on others.
The bike came with the SEPRT fitted presumably because it was an ex-demo bike for Cheltenham HD. It wasn't what I would have chosen but I've run it for six months to give it a fair go. I've got the leads and software for the SEPRT and have had a decent play with it. I've decided its not for me. I've had a look at the Thundermax and prefer the flexibility it provides me.
Harley don't provide any performance parts for the XR so everything is after market. The Thundermax is more suited to that direction in my mind. The SEPRT is a good system but doesn't really allow parts changes without going back into the system whereas the Thundermax does.
As for peak power/torque, as you state, none of the systems will get that without a proper dyno tune but the Thundermax will place you nearer more consistently. I also like the fact it will compensate for different octane rated fuel on the fly.
I've got three choices of cams lined up, starting with the little ones (575's) and working up. It should be interesting to see how much or little actually needs to be done when setting them up.
Sounds like a plan. Post how it turns out cos I'm definitely interested.