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Discussion Starter #1
I will be ordering an MP-8 this week and was wondering what the fuel rail plug is that you can buy seperate. I remember reading something about this, but couldn't find the thread. Doesn't it have something to do with stacking?
 

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yes you only want the plug if your not stacking. If you use the plug and stack you can blow your injectors with to much pressure!
 

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yes you only want the plug if your not stacking. If you use the plug and stack you can blow your injectors with to much pressure!
What he said. With what you are running you need to shim the fuel rail.
 

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Thanks guys :thumbsup
 

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It will be there tomorrow. Thanks again:peelout
 

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You do have some fast shipping I got those egr plates Fast!
 

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Hey real nice Keven!:rof:rof
 

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Discussion Starter #10
It will be there tomorrow. Thanks again:peelout

Thanks for the super fast shipping. I got those EGR plates in really quick. Can't wait for the MP8. Great doing business with you.:beer
 

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Thanks for the super fast shipping. I got those EGR plates in really quick. Can't wait for the MP8. Great doing business with you.:beer
Anytime and thank you! :thumbsup:beer
 

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Is it pretty hard to install the TS MP-8 ? Going on a 2007 cummins 6.7

What exactly is involved? Anyone know of a shop near Columbia, MO that can put one in?
 

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Where are you at Package? If you can get near Tri-Cities Washington i would gladly help you install it.
 

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so on the mp-8 i have the edge. do i need to do the plug on the back of the fuel rail to or just shim it?
 

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You need to shim it. The plug is only used if you are not stacking.
 

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Yep you need to use the shim kit. Using the plug when stacking can cause injector damage.
 

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ok so i do not need the do the plug then?? then what do i di with the wires just keep them under the hood?? will it work for now withough shiming it?
 

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ok so if all i do is shim it then why do i need the mp-8 moduel and knob?? if there not plugged into anythang. am i missing somethang?
 

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ok, there is an electrical connection on the back of the fuel rail. That is where the MP-8 Plugs into and changes the Rail Pressure readings. The shimming is done on the Fuel Relief Valve on the front of the fuel rail. You can use a plug in place of the Fuel relief valve if you are not stacking but there is no relief so if 2 boxes raise the rail pressure it puts it over the Max PSI. Not a good thing.
 

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ok then how does the knob work if its not plugged into anthang how do you control how much you wanna turn up the mp-8
 
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