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MSD: Digital Propane Injection

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Old 05-24-2005, 09:54 PM
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MSD: Digital Propane Injection

Anyone tried the product?

They claim it works well w/ tuners and adds up to 70 HP. It also increases the range of the vehicle (assumably because you are burning 2 sources of fuel and measurimg MPGs off diesel fuel alone)

Is this product for efficiency, lower EGTs or increased power?
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Old 05-25-2005, 10:36 AM
Mark at DPPI Mark at DPPI is offline
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It's actually for all three. It's gets the average diesel 60-80 HP, increases MPG (if you drive like you want MPG anyway), and cools EGT's 100+ degrees on average. It's also the only system that allows the user to reprogram the propane curve based on what "other" mods they have or don't have etc. Quite a product overall.

Mark @ DPPI
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Old 05-25-2005, 03:21 PM
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Now I'll buy the power gains, it does add a good kick...

But as far as lower EGT's, the BS meter is creeping up TorquePro most certainly does not lower the EGT's, and I have never seen nor heard of any propane system that actually does. Logically, it cannot. People seem to have this misconception that propane is a catalyst with diesel fuel- chemically, it is not. The faster burn rate does assist with burning off all of the diesel, but you are still adding fuel- more fuel = higher EGT.

On a good note, of all the propane systems, this one does appear to be a very quality product.

Vic, you got any input on this one?
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Old 05-26-2005, 12:34 AM
Fastest1 Fastest1 is offline
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The propane could have a lower burn temperature/btu's and cool it down , I would think.
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Old 05-26-2005, 05:16 AM
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look at the notes under the picture of the system it states to install a pyro guage as exhaust temperatures increase.
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Old 05-26-2005, 08:29 AM
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If you do not use exorbitant amounts of propane to accomplish what a small amount will do, which is simply help burn the diesel that is present more completely...., then yes you can actually see lower EGT's. .

Now mind you, this is not a tremendous drop by any means, usually only about 50-100 degrees but it should not cause them to increase.

And yes, you are correct, propane is not "technically" or by definition a "catalyst" in the true sense of the word, but for lack of a better way to describe it's effect on the diesel fuel, it is used to explain what happens.
So while you are adding a fuel, the key is to not add a lot, (i.e. control the amount) so that you burn it (the propane) completely and more of the diesel along with it, such as with a system that is variable and controls and meters the flow of propane by a constant perimeter such as ...........boost pressure

Gauges are a good idea, regardless.

Last edited by powershotone; 05-26-2005 at 08:32 AM.
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