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Crusty1
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« on: May 07, 2023, 07:12:10 PM » |
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Has anyone tried to transplant an ECM from a 98-00 Goldwing into a Valkyrie to replace the ICM? I am attempting it now. Love the Valkyrie but the fuel consumption is horrid. Comparable Goldwings are getting 35-38 MPG. Best Ive seen on 97 Valkyrie is 30-31. Even a few MPG improvement would be better.
Crusty
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The emperor has no clothes
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« Reply #1 on: May 07, 2023, 07:48:06 PM » |
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Haven’t heard of it. I doubt it would be easy, even if possible. There are other things also impeding our mpg between the GoldWing. Personally I don't consider a 6-7 mpg difference all that horrid.
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Willow
Administrator
Member
Posts: 16590
Excessive comfort breeds weakness. PttP
Olathe, KS
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« Reply #2 on: May 07, 2023, 08:05:29 PM » |
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... Love the Valkyrie but the fuel consumption is horrid. ... Best Ive seen on 97 Valkyrie is 30-31. Even a few MPG improvement would be better. Without mods you should normally get 35 - 40 mpg. The ICM is not your issue. |
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Crusty1
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« Reply #3 on: May 07, 2023, 08:36:16 PM » |
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... Love the Valkyrie but the fuel consumption is horrid. ... Best Ive seen on 97 Valkyrie is 30-31. Even a few MPG improvement would be better. Without mods you should normally get 35 - 40 mpg. The ICM is not your issue. I maintain 3 of these valkyries for friends. Rebuilt carbs, changed ICMs, needle jets air filters, etc… I’m open to suggestions. |
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Willow
Administrator
Member
Posts: 16590
Excessive comfort breeds weakness. PttP
Olathe, KS
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« Reply #4 on: May 07, 2023, 08:42:48 PM » |
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... Love the Valkyrie but the fuel consumption is horrid. ... Best Ive seen on 97 Valkyrie is 30-31. Even a few MPG improvement would be better. Without mods you should normally get 35 - 40 mpg. The ICM is not your issue. I maintain 3 of these valkyries for friends. Rebuilt carbs, changed ICMs, needle jets air filters, etc… I’m open to suggestions. What needle jets? What fuel are you running? |
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Crusty1
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« Reply #5 on: May 07, 2023, 08:46:15 PM » |
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Haven’t heard of it. I doubt it would be easy, even if possible. There are other things also impeding our mpg between the GoldWing. Personally I don't consider a 6-7 mpg difference all that horrid.
I ride a 2000 GW SE and a 2007 ST1300. 35-38 on the GW and 45-47 on the ST. 30-31 on a Valkyrie sucks. Why does the best looking bike ever get the worst mileage. |
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ridingron
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« Reply #6 on: May 07, 2023, 09:02:48 PM » |
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I ride a 2000 GW SE and a 2007 ST1300. 35-38 on the GW and 45-47 on the ST. 30-31 on a Valkyrie sucks. Why does the best looking bike ever get the worst mileage. I rode with a buddy on his GW1500. Compared to my ST1100 his MPG was terrible! Remember you're pouring gas into 6 carbs on the Valk. Have you guys swapped bikes (for a full tank) to see if the MPG stays with the bike or follows the rider? |
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sandy
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« Reply #7 on: May 07, 2023, 11:43:13 PM » |
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... Love the Valkyrie but the fuel consumption is horrid. ... Best Ive seen on 97 Valkyrie is 30-31. Even a few MPG improvement would be better. Without mods you should normally get 35 - 40 mpg. The ICM is not your issue. I have a ‘97 tourer and consistently get 36 even at 75+ at 3500 RPMs. Remember the 1500 wing has 2 carbs and different cams. |
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hubcapsc
Member
Posts: 16769
upstate
South Carolina
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« Reply #8 on: May 08, 2023, 03:41:17 AM » |
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Valkyries seem all over the place to me. I don't think in terms of mpg,
but I go on reserve around 115. Wimp's Red and White will go 150 or more.
It seems like when we'd stop, I'd always get a gallon more than him.
I've heard many different answers for "when do you go on reserve?" over
the years...
-Mike
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Steel cowboy
Member
Posts: 1284
Moving ahead so life won’t pass me by.
Spring Hill, Fl.
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« Reply #9 on: May 08, 2023, 05:09:24 AM » |
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On my interstate, 35.7 mpg. This weekend, solo, averaging 70 mph. Some stop and go in traffic.
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2001 black interstate
2003 Jupiter Orange wing
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Crusty1
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« Reply #10 on: May 08, 2023, 09:02:38 AM » |
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UPDATE: The GW ECM was successfully transplanted into the 97 Valkyrie. Seems to run just fine and better low end. Road testing this week to test mileage.
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ridingron
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« Reply #11 on: May 08, 2023, 08:34:18 PM » |
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Was it plug and play?
What did the tech do?
I am interested in hearing the results in both riding and MPG.
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indybobm
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« Reply #12 on: May 09, 2023, 07:38:35 AM » |
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I would like to see a picture of the ECM. What is the part number? What model Goldwing did it come off of?
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So many roads, so little time
VRCC # 5258
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Bagger John - #3785
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« Reply #13 on: May 09, 2023, 02:11:43 PM » |
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I would like to see a picture of the ECM. What is the part number? What model Goldwing did it come off of?
Definitely interested as well. |
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gordonv
Member
Posts: 5760
VRCC # 31419
Richmond BC
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« Reply #14 on: May 09, 2023, 08:01:15 PM » |
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Which model Valk? Std/T or IS? IS would be either a better match to the GW, or worse.
If you want better mileage, get a larger diameter rear tire. I've still to mount my ATT to my IS, but I would expect something like 5% better miles or faster bike.
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1999 Black with custom paint IS   |
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Crusty1
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« Reply #15 on: May 10, 2023, 07:52:09 PM » |
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I would like to see a picture of the ECM. What is the part number? What model Goldwing did it come off of?
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Crusty1
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« Reply #16 on: May 10, 2023, 08:04:15 PM » |
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Was it plug and play?
What did the tech do?
I am interested in hearing the results in both riding and MPG.
It was not plug and play. I had to build an adapter harness destroying an old ICM and a GW wiring harness. I believe the ECM and harness are from 98-00 GW if the Ebay supplier is believable. I only used the wires needed to match the Valkyre ICM. I am ignoring the remainder of the GW inputs (IAT, 2nd, 3rd,4th, OD) for now. I will be testing the other inputs after my initial baseline tests are complete. So far it runs fine and has improved low end torque when accelerating away from a stop. I will report back after a couple of tanks of data are gathered. I dont understand your question about the TECH. If you mean TACH It works fine as the GW Tach lead is Yellow/Blue instead of Yellow/Green. |
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ridingron
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« Reply #17 on: May 10, 2023, 09:30:34 PM » |
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I dont understand your question about the TECH. If you mean TACH It works fine as the GW Tach lead is Yellow/Blue instead of Yellow/Green. I somehow got the idea someone was doing the swap for you. You are the Tech (technician).  |
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Crusty1
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« Reply #18 on: May 11, 2023, 10:40:00 AM » |
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I passed the rank of tech back in high school. I’m the mechanic, tech, engineer and motorcyclist.
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98valk
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« Reply #19 on: May 11, 2023, 12:30:05 PM » |
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Which model Valk? Std/T or IS? IS would be either a better match to the GW, or worse.
If you want better mileage, get a larger diameter rear tire. I've still to mount my ATT to my IS, but I would expect something like 5% better miles or faster bike.
GW ICM provides a vacuum advance for more advance during part throttle cruise, this is where the MPG war is won or lost. https://www.goldwingfacts.com/threads/gl1500-ecm-ignition-timing.320266/ |
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1998 Std/Tourer, 2007 DR200SE, 1981 CB900C 10speed
1973 Duster 340 4-speed rare A/C, 2001 F250 4x4 7.3L, 6sp
"Our Constitution was made only for a Moral and Religious people. It is wholly inadequate to the goverment of any other."
John Adams 10/11/1798
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Crusty1
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« Reply #20 on: May 11, 2023, 04:08:49 PM » |
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Quote GW ICM provides a vacuum advance for more advance during part throttle cruise, this is where the MPG war is won or lost.
That is precisely why I picked the GW ECM.
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turtle254
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« Reply #21 on: May 11, 2023, 07:14:07 PM » |
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Quote GW ICM provides a vacuum advance for more advance during part throttle cruise, this is where the MPG war is won or lost.
That is precisely why I picked the GW ECM.
Looks like you have the vacuum line hooked up off the ECM? |
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Crusty1
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« Reply #22 on: May 11, 2023, 08:04:59 PM » |
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[/quote]Looks like you have the vacuum line hooked up off the ECM?
[/quote]
Trust me it is clearly connected
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Flat 6 man
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« Reply #23 on: May 20, 2023, 05:05:01 PM » |
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My mileage jumped from 33 to 38 after installing a 6 degree advance wheel.
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1998 Valkyrie with Cobra exhaust and optional two-tone paint
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Bagger John - #3785
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« Reply #24 on: May 21, 2023, 03:55:00 PM » |
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My mileage jumped from 33 to 38 after installing a 6 degree advance wheel.
Using regular or premium? Mine jumped a good bit by the installation of I/S carb springs, Dynojet needles and an I/S ICM - this on a '99 CA-model Tourer. I've had similar results on other Valkyries. The CA models have different cam profiles than the 49-staters. Perhaps this aids mileage at the loss of a bit of power but I have zero problems passing anything with that bike when running 2-up - even with a full trunk and saddlebags. At 75MPH on the highway I easily and consistently see 40-42MPG. It has a Bat Wing and I/S radiator/pods. And it can run on 87 octane gas. |
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Crusty1
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« Reply #25 on: May 28, 2023, 07:58:13 PM » |
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***update***. The transplant was a measured success. After running on the GW ECM the Valkyrie went from 30 mpg to 34.5 calculated over 1000 miles. When time allows I will be documenting advance curves on the stock ICM, the GWECM using only basic sensors and testing the effect of the unused sensor inputs. Will update later.
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98valk
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« Reply #26 on: May 29, 2023, 04:18:43 AM » |
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***update***. The transplant was a measured success. After running on the GW ECM the Valkyrie went from 30 mpg to 34.5 calculated over 1000 miles. When time allows I will be documenting advance curves on the stock ICM, the GWECM using only basic sensors and testing the effect of the unused sensor inputs. Will update later.
u can see the stock std/tourer OEM advance curve here https://www.manualslib.com/manual/396434/Dynatek-D3k1-1revd.html?page=2#manual |
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1998 Std/Tourer, 2007 DR200SE, 1981 CB900C 10speed
1973 Duster 340 4-speed rare A/C, 2001 F250 4x4 7.3L, 6sp
"Our Constitution was made only for a Moral and Religious people. It is wholly inadequate to the goverment of any other."
John Adams 10/11/1798
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