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Old 11-09-2013, 11:22 AM   #1 (permalink)
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Convert to permanent 2wd

Im just wondering if this could be done easily. Not all people need a 4wd mdx and for people with problems with their 4wd system, converting to a 2wd system might be feasible. It might yield better mpg with all the components like drive shafts, rear differential, and half shafts removed like those in a 2wd pilots. I know it can be done to subarus with just a simple kit like this:

Subaru 2WD Conversion Kit - Bremar Automotion
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Old 11-09-2013, 07:48 PM   #2 (permalink)
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It wont give you anything on the mpg front. it will likely cause warning lights on the car, deactivate the stability stability system, perhaps the ABS as well.
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Old 11-11-2013, 10:07 AM   #3 (permalink)
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Old 11-11-2013, 02:56 PM   #4 (permalink)
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Lol I knew I should have worn my flame suit for asking this question!
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Old 11-11-2013, 05:38 PM   #5 (permalink)
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Lol I knew I should have worn my flame suit for asking this question!
You could buy an Odyssey......
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Old 11-13-2013, 06:04 PM   #6 (permalink)
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Though it is very likely possible, I highly doubt you gain more than 0.5 mpg. The differential is relatively small on the MDX and the half-shafts are light-duty...this all means that the weight and rotating mass you will remove is not likely to have a measurable effect on mpg. The biggest reason that there is a difference between some years of the Pilot is mostly due to the 2wd model having the cylinder-shutdown which was not offered on the 4wd model...at least not on the 1st Gen. Go for it though, I am sure we are curious to see exact what is involved, why error codes (if any) are thrown and what gains there are in mpg. Be sure to weigh all the components you are able to remove from the MDX...just curious to see what the total weight is of what you can remove.


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Old 11-14-2013, 01:30 PM   #7 (permalink)
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Just unplug the actuator on the rear differential. You will get a vtm4 light but it will then be front wheel drive.
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Old 11-16-2013, 07:19 AM   #8 (permalink)
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Thanks, I'll have to research more on this and will definitely will log everything if ever i do it.
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Old 11-20-2013, 10:31 AM   #9 (permalink)
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It's not full time AWD anyways, it's FWD until tire slip is detected, then and only then is power directed to the rear tires.

If you wanted 2wd, you really did buy the wrong car, sorry to say.
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Old 11-20-2013, 10:40 AM   #10 (permalink)
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It's not full time AWD anyways, it's FWD until tire slip is detected, then and only then is power directed to the rear tires.

If you wanted 2wd, you really did buy the wrong car, sorry to say.
I do have a 2wd pilot. and i was just wondering not actually doing.
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Old 11-20-2013, 11:30 AM   #11 (permalink)
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It's not full time AWD anyways, it's FWD until tire slip is detected, then and only then is power directed to the rear tires.

If you wanted 2wd, you really did buy the wrong car, sorry to say.
Not true. In the MDX power is applied to the rear wheels any time you accelerate from a stop or while accelerating quickly up to a certain speed.
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Old 11-20-2013, 12:31 PM   #12 (permalink)
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Not true. In the MDX power is applied to the rear wheels any time you accelerate from a stop or while accelerating quickly up to a certain speed.
Aren't the rear wheels always powered? And then additional torque applied when needed under certain conditions, etc.?
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Old 11-21-2013, 07:30 AM   #13 (permalink)
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Not true. In the MDX power is applied to the rear wheels any time you accelerate from a stop or while accelerating quickly up to a certain speed.
Actually, according to the Tech at the stealership, when I received the firmware update to help preserve the life of the transmission, he said it also did away with the default to use AWD/VTM-4 when accelerating normally from a stop. Now it only kicks in when there is tire slip or you lock it in by pushing the VTM-4 button. Don't know whether this is true or not, but he seemed like a more knowledgable than normal tech.


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Old 11-22-2013, 02:51 AM   #14 (permalink)
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Actually, according to the Tech at the stealership, when I received the firmware update to help preserve the life of the transmission, he said it also did away with the default to use AWD/VTM-4 when accelerating normally from a stop. Now it only kicks in when there is tire slip or you lock it in by pushing the VTM-4 button. Don't know whether this is true or not, but he seemed like a more knowledgeable than normal tech.
If this is true, it makes me glad I didn't get the 'update'
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Old 11-22-2013, 07:43 AM   #15 (permalink)
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I tend to agree, but for a different reason than the AWD. I drive on dirt roads periodically, and in the snow, and after the update I have never had a problem, as the computer is very quick to lock in AWD when needed....However, the update has definitely hurt my in-town mileage measurably. I guess the durability of the torque converter is with it. It would take decades of the gas savings of not doing the update to pay for a new TC.


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