3rd Gen High Performance and Accessories (5.9L Only) Talk about Dodge/Cummins aftermarket products for third generation trucks here. Can include high-performance mods, or general accessories. THIS IS FOR THE 5.9L ONLY!
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will a 6.7 MP8 work on a 2003 5.9?

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Old 07-09-2010, 11:03 PM
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will a 6.7 MP8 work on a 2003 5.9?

I was told by two people it would. Is this right?
Old 07-09-2010, 11:11 PM
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I know the rail sensors are different, so it would take some modification to the plugs.

Not sure about the signal, thou.. Both are 0-5v senders, but the 6.7 runs more pressure.
Old 07-10-2010, 03:54 PM
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Plugs are different but you may be able to get the harness from TS is the box is the same.
Old 07-11-2010, 08:56 PM
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Ok TS will have to answer my questions. i got the MP8 from a guy who had it on a 6.7. I put the MP8 on and the rail pressure harness on the MP8 was exactly the same as my rail sensor on the 5.9. But when I dial it in, nothing seems to change on my rail pressure. Im not sure if its compatiable but it matched right up to the plugs.

Originally Posted by SpeedyWS6
Plugs are different but you may be able to get the harness from TS is the box is the same.
Old 07-11-2010, 09:57 PM
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How are you reading rail pressure?
Old 07-15-2010, 10:02 PM
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I posted the same ? on the 6.7 forum said it won't work.
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