I have a 2005 Evinrude ETec 90HP. Had it since new and love the engine. For
the first three years of use, the WOT top RPM's (turning a Viper 19-pitch
stainless prop) were right at 5200RPM. This gave good performance when I needed
it (although I usually cruise around 3800-4000 RPM) and I was happy with that.

Last fall I took the engine to the dealer to do the 3-year checkup recommended
by Evinrude. They did the usual stuff --- plugs, drain/fill lower unit, check
water pump, etc. Also reflashed the computer with the latest firmware.

I've had the boat out a couple times on smaller lakes this spring, but today was
the first time that I had a chance to make a high speed run down a long lake. I
was totally surprised to find my WOT RPM's have risen to an honest 5600.
Absolutely nothing has changed physically..... same boat, same prop, same load
of fishing stuff, and I had a full load of fuel.

Were there some "performance enhancements" to the firmware between 2005 (when
the motor was built) and last fall? I was happy with the motor before, but now
it REALLY sparkles.

Hans/MN
--

Come sit by the fire and warm your bones. Share a bracing drink and a few tales.
"The wind was picking up, the bite was cold, my hands were numb, nose was
running, I had to pee, and I was thinking of heading for the dock, when...."

http://home.earthlink.net/~k0hb

On Tue, 17 Jun 2008 04:34:25 -0000, "KØHB"
wrote:

Also reflashed the computer with the latest firmware

There's your answer.

Mine is going in another couple of weeks.

"Short Wave Sportfishing" wrote in message
...
On Tue, 17 Jun 2008 04:34:25 -0000, "KØHB"
wrote:

Also reflashed the computer with the latest firmware

There's your answer.

Mine is going in another couple of weeks.

Then you better sell it quick before the more is gone.

KØHB wrote:
I have a 2005 Evinrude ETec 90HP. Had it since new and love the engine. For
the first three years of use, the WOT top RPM's (turning a Viper 19-pitch
stainless prop) were right at 5200RPM. This gave good performance when I needed
it (although I usually cruise around 3800-4000 RPM) and I was happy with that.

Last fall I took the engine to the dealer to do the 3-year checkup recommended
by Evinrude. They did the usual stuff --- plugs, drain/fill lower unit, check
water pump, etc. Also reflashed the computer with the latest firmware.

I've had the boat out a couple times on smaller lakes this spring, but today was
the first time that I had a chance to make a high speed run down a long lake. I
was totally surprised to find my WOT RPM's have risen to an honest 5600.
Absolutely nothing has changed physically..... same boat, same prop, same load
of fishing stuff, and I had a full load of fuel.

Were there some "performance enhancements" to the firmware between 2005 (when
the motor was built) and last fall? I was happy with the motor before, but now
it REALLY sparkles.

Hans/MN
--

Come sit by the fire and warm your bones. Share a bracing drink and a few tales.
"The wind was picking up, the bite was cold, my hands were numb, nose was
running, I had to pee, and I was thinking of heading for the dock, when...."

http://home.earthlink.net/~k0hb




There are only two possibilities:

The dealer removed the "governator."

The "reflash."

OK, I've had several more outings since the first post, and this increase is
REAL. I consistently get 200-300 more RPM's and a corresponding increase in GPS
MPH. This is with the boat fully loaded, all equipment, full of fuel, etc.

Absolutely nothing has changed in this rig except for the 3-year maintenance
(which included reflashing the firmware.

I'm considering a more aggressive prop!

Hans/MN
--

Come sit by the fire and warm your bones. Share a bracing drink and a few tales.
"The wind was picking up, the bite was cold, my hands were numb, nose was
running, I had to pee, and I was thinking of heading for the dock, when...."

On Wed, 25 Jun 2008 21:20:16 -0000, "KØHB"
wrote:

I'm considering a more aggressive prop!

You need to be careful with that as I'm sure you know.

If I were you, I might consider SS four blade - your top end will stay
about the same, but oh my gosh, the acceleration is outstanding.

By the by, your 90 ETEC is about as perfect an technology/engine
combination as there ever has been. I hear comments from guys all the
time about the 90 ETEC and it's been nothing but superlatives.

On Jun 25, 7:02*pm, Short Wave Sportfishing
wrote:
On Wed, 25 Jun 2008 21:20:16 -0000, "KØHB"
wrote:

I'm considering a more aggressive prop!

You need to be careful with that as I'm sure you know.

If I were you, I might consider SS four blade - your top end will stay
about the same, but oh my gosh, the acceleration is outstanding.

By the by, your 90 ETEC is about as perfect an technology/engine
combination as there ever has been. *I hear comments from guys all the
time about the 90 ETEC and it's been nothing but superlatives.

Unless you are a narcissist that doesn't own one.

wrote:
On Jun 25, 7:02 pm, Short Wave Sportfishing
wrote:
On Wed, 25 Jun 2008 21:20:16 -0000, "KØHB"
wrote:

I'm considering a more aggressive prop!
You need to be careful with that as I'm sure you know.

If I were you, I might consider SS four blade - your top end will stay
about the same, but oh my gosh, the acceleration is outstanding.

By the by, your 90 ETEC is about as perfect an technology/engine
combination as there ever has been. I hear comments from guys all the
time about the 90 ETEC and it's been nothing but superlatives.

Unless you are a narcissist that doesn't own one.


Boating Content from Loogy: Zip

"Short Wave Sportfishing" wrote in message
...


If I were you, I might consider SS four blade - your top end will stay
about the same, but oh my gosh, the acceleration is outstanding.


I'm currently running a 3-blade Viper SS, 19 pitch.

Would you start out looking at the same pitch in a 4-blade? Which 4-blade?

Hans/MN
--

Come sit by my fire and warm your bones. Share a bracing drink and a few tales.
"The wind was picking up, the bite was gone cold, my hands were numb, nose
was running, I had to pee, and I was thinking of heading for the dock, when...."

On Thu, 26 Jun 2008 15:37:11 -0000, "KØHB"
wrote:


"Short Wave Sportfishing" wrote in message
.. .


If I were you, I might consider SS four blade - your top end will stay
about the same, but oh my gosh, the acceleration is outstanding.

I'm currently running a 3-blade Viper SS, 19 pitch.

Do what I did - stick with the same pitch only four blade.

Out of curiosity, how old is your engine? I just heard something
today kind of interesting - they changed the deflector pins in certain
2006 engines - don't know if the 90 was covered in the change.

That could account for the increase in performance also.