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 Post subject: ORM Questions inside
PostPosted: Mon May 17, 2010 3:21 pm 
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So is anyone offering the ORM kit still? I think UFO might have been the guy. If not where is the DIY link on here? Also how does the computer measure the maf sensor? in ohms/resistance? If so, why can you just add in a resistor of the correct ohms to "fool" the computer. Seems a little more easy than that box and stuff. while this might not work and im sure someone will explain why.....From past experiance in order to trick/fool the computer almost every sensor you would just cut/splice in a resistor to still keep the same resistance.....thus the computer still thinks its in the circuit. Right?

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 Post subject: Re: ORM Questions inside
PostPosted: Mon May 17, 2010 3:44 pm 
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dieselsmoke wrote:
So is anyone offering the ORM kit still? I think UFO might have been the guy. If not where is the DIY link on here? Also how does the computer measure the maf sensor? in ohms/resistance? If so, why can you just add in a resistor of the correct ohms to "fool" the computer. Seems a little more easy than that box and stuff. while this might not work and im sure someone will explain why.....From past experiance in order to trick/fool the computer almost every sensor you would just cut/splice in a resistor to still keep the same resistance.....thus the computer still thinks its in the circuit. Right?

The SEGR kit? UFO was the guy, but I'm not sure if he makes them any more... a kit pops up every now and again in the for sale section. The ORM stands for Off Road Mod - it just involves unplugging your MAF sensor and ignoring the CEL.

Or you can get a GDE Tune, which does essentially the same thing as the SEGR (except in one special set of circumstances) and boost performance/mpg. All for about $200 more than the kit... :2cents:

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 Post subject: Re: ORM Questions inside
PostPosted: Mon May 17, 2010 4:11 pm 
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stoutdog wrote:
dieselsmoke wrote:
So is anyone offering the ORM kit still? I think UFO might have been the guy. If not where is the DIY link on here? Also how does the computer measure the maf sensor? in ohms/resistance? If so, why can you just add in a resistor of the correct ohms to "fool" the computer. Seems a little more easy than that box and stuff. while this might not work and im sure someone will explain why.....From past experiance in order to trick/fool the computer almost every sensor you would just cut/splice in a resistor to still keep the same resistance.....thus the computer still thinks its in the circuit. Right?

The SEGR kit? UFO was the guy, but I'm not sure if he makes them any more... a kit pops up every now and again in the for sale section. The ORM stands for Off Road Mod - it just involves unplugging your MAF sensor and ignoring the CEL.

Or you can get a GDE Tune, which does essentially the same thing as the SEGR (except in one special set of circumstances) and boost performance/mpg. All for about $200 more than the kit... :2cents:


Right i understand the ORM.....I was just wondering where i could get that kit from. It seems llike all the issues with components on these crd's are turned off when yout get a GDE tune. Im just gonna wait and get the GDE tune and fix it all at once. thata pretty much what i needed to know

Also the other day i did the ORM after start up like called for and no CEL...later while driving CEL came on and it went into limp mode.......So my point is. the ORM is not an affective mod by just unpluging it after start up. Sure it might help out for a bit but the CEL will come on later and limp the truck.

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 Post subject: Re: ORM Questions inside
PostPosted: Mon May 17, 2010 4:51 pm 
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dieselsmoke wrote:

Also the other day i did the ORM after start up like called for and no CEL...later while driving CEL came on and it went into limp mode.......So my point is. the ORM is not an affective mod by just unpluging it after start up. Sure it might help out for a bit but the CEL will come on later and limp the truck.


You should not get Limp mode with the ORM. Maybe you touched something else by accident? Maybe you should see if you have any other codes?

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 Post subject: Re: ORM Questions inside
PostPosted: Mon May 17, 2010 5:51 pm 
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Yeah, it should not go into limp mode. Are you sure you pulled the sensor plug in the intake tube on top of the air filter box? Also, why you would pull a sensor on a running engine, I don't know. Do it before startup and you'll probably get the CEL the startup after that one.

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 Post subject: Re: ORM Questions inside
PostPosted: Mon May 17, 2010 7:07 pm 
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CATCRD wrote:
Yeah, it should not go into limp mode. Are you sure you pulled the sensor plug in the intake tube on top of the air filter box? Also, why you would pull a sensor on a running engine, I don't know. Do it before startup and you'll probably get the CEL the startup after that one.

x2

What I was trying to say is that there is no ORM "kit". That is the SEGR, which will run you a couple hundred bucks. Just go with the GDE tune and be done with it. 8)

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 Post subject: Re: ORM Questions inside
PostPosted: Tue May 18, 2010 9:10 am 
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It's amazing how things are cyclical, huh? :o

The ORM (make sure it's the correct sensor, viewtopic.php?f=98&t=22631 ) should not trigger limp mode. I ran it for about 25k miles with no problems.

However, the wiring bundle that feeds the MAF sensor also feeds the Intake Air Pressure/ Temperature sensor on the driver's side front of the airbox. (has a Mercedes logo on it) This sensor has been shown to trigger limp mode, so check the wiring to it closely and make sure all is well with it.

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