Author Topic: Gulh Reflash/Area P  (Read 7568 times)

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Offline Texas Concours14

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Re: Gulh Reflash/Area P
« Reply #25 on: October 14, 2011, 02:51:08 am »
Got my Guhl ECU reflash today, and took bike for a spin.  2010 ABS with Area P slip-on; asked for (and assume I got) the "Fred Harmon special for CS One slip-on without insert" ECU reflash.  Don't have as much road time as ProfessorKonk, but so far my impressions are the same.  It certainly gives a boost to the low end.  Before sending in the ECU, I did a bunch of throttle twists at 3000 rpm in 5th gear to etch into my mind the extent of delay in throttle response and relatively slow pickup in power.  By comparison (granted, 2 weeks later), it seems to me that there is comparatively very little throttle delay and the power comes on quicker and more vigorously.  Seems like the exhaust sound is more throaty (in a good way) and a bit louder.  In city traffic, could ride around in 3rd gear with power at my disposal, whereas beforehand I would have been shifting between 2nd and 3rd to keep RPMs above 3000-3500.  I am happy with the reflash.  It does not transform the bike into a gnarly beast, but it overcomes the common complaint that the bike is neutered at low RPM.  Worth the money to me.
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Offline Stewart

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Re: Gulh Reflash/Area P
« Reply #26 on: October 14, 2011, 11:20:09 am »
I've noticed people who go the ECU Flash route 'generally' are more mild in their response....."Nice improvement, smooth, extrax low end..blah blah"

While those who get a slip on, remove flies, or and power commmander 'generally' rave about it...like its better than sliced bread.

Is it just me?
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Offline ProfessorKonk

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Re: Gulh Reflash/Area P
« Reply #27 on: October 14, 2011, 04:14:21 pm »
All of our personal/empirical evaluations are subject to much psychology, emotion, and outright confabulation e.g. "that fish was  t  h  i  s  big when it broke my line and got away". Some people get really excited when they describe certain stimuli; others might be much more reserved when describing the very same stimulus.

We can allow ourselves to believe a trusted advisor or test rider. If Casey Stoner told me his Guhl reflash and Area-P can were awesome upgrades, I would believe him. My own experience might be different, but the influence of such a respected opinion would be hard to ignore. I might even be persuaded to diminish the value of my own observations.

What we're missing is a true quantitative comparison. Let's compare a stock C14 with the modded version, using a calibrated dyno and a factory test pilot with an accelerometer and full data collection package. That will at least answer the real vs. perceived component in the discussion.

Or, like me, one can settle for the empirical observation: the changes made a difference, and I consider the difference an improvement over stock. And, yes, the fish WAS  t  h  a  t   big!!!  :beerchug:
So many farkles, so little time.

Offline Stewart

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Re: Gulh Reflash/Area P
« Reply #28 on: October 14, 2011, 04:20:54 pm »
I'll drink to that.
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Offline Texas Concours14

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Re: Gulh Reflash/Area P
« Reply #29 on: October 14, 2011, 05:04:44 pm »
Well put ProfessorKonk.  There is objective data on the effects of an ECU reflash (with stock pipes, I believe):
http://forum.cog-online.org/index.php/topic,27486.0.html

There is certainly low end improvement (up to 15% HP and torque on the dyno) but little to no improvement above 6,000 RPM.  Knowing this may have influenced my perceptions, but nonetheless my butt dyno impressions are congruent with real dyno data.  I am happy with the size of the fish I caught/bought.


« Last Edit: October 14, 2011, 05:07:29 pm by Steve »
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Offline Stewart

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Re: Gulh Reflash/Area P
« Reply #30 on: October 14, 2011, 05:28:28 pm »
Steve....I completely forgot about that dyno run, nice catch!!  ;)
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Offline ProfessorKonk

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Re: Gulh Reflash/Area P
« Reply #31 on: October 14, 2011, 09:43:31 pm »
I too had forgotten about Fred's dyno charts. . .
What is reassuring is that the dyno completely reaffirms my seat-of-the-pants experience. Even those very slight dips in the powerband I had questioned are visible in the charts, and at about the places I had thought they were lurking. So I am inclined to better trust my gluteus-dyno-maximus!
It's just the most fun bike I have ever owned.
So many farkles, so little time.

Offline Texas Concours14

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Re: Gulh Reflash/Area P
« Reply #32 on: October 15, 2011, 12:20:43 am »
Don't mean to beat a dead horse, but went out tonight and I gotta say, I am absolutely loving this bike with the reflash.  I am more impressed after this second, longer ride.
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Offline Stewart

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Re: Gulh Reflash/Area P
« Reply #33 on: October 15, 2011, 02:12:16 am »
Don't mean to beat a dead horse, but went out tonight and I gotta say, I am absolutely loving this bike with the reflash.  I am more impressed after this second, longer ride.

But how big was the dead horse? Was it this BIG or this BIG....I want to see a photo.
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Offline Stewart

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Re: Gulh Reflash/Area P
« Reply #34 on: October 15, 2011, 02:14:45 am »
Actually...I have a track day on Monday at the New Hampshire Speedway. I'm very eager to work the low down torque and see how well the C14 can haul arse around the track with the flash now. This will be my 2nd time ever on a track so the comparison will be interesting, pre/post flash.
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Offline ProfessorKonk

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Re: Gulh Reflash/Area P
« Reply #35 on: October 22, 2011, 01:22:59 pm »
Stewart,
How was the track day? Monday was spectacular here in CT. Curious to hear your impressions post-flash?
Cheers,
So many farkles, so little time.

Offline Stewart

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Re: Gulh Reflash/Area P
« Reply #36 on: October 23, 2011, 08:22:54 pm »
Trackday was awesome. It was my 2nd ever so I'm still learning a lot...aren't we all. I see many in my future....but may need a cheap 750 to litre bike for that.

The key thing I noticed post flash was I could run the track in 3rd with plenty of power out of the corners, I downshifted to 2nd in 2 corners, mostly to govern my entry speed. If I came in using 3rd, I found I wasn't able to make the corner clean. Which is a rider issue, not bike.

Apart from that it ran the same. I tried a little to get the TC to kick as a guage to how hard I could push the bike out of the corners, but failed to do so. I suspect this has more to do with my skills again and how hard to push it, than the bike. Given that this is my only bike....I'm not prepared to dropped it.

I'm scapping pegs more often which says two things, need to work on body position more and I'm now carrying more speed through corners. As I said eventually I see a track bike in my future...maybe pick something up real cheap.

Stewart
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