Thread: Using EGR for DHP input

I'm looking to add either my wideband or LIM temp sensor via the EGR. I've heard a ton of people talking about it but I've never seen how. As of now, when I want to see what the delta temps are I have to disconnect my IAT sensor and use that, I also can't log my wideband and I would like to start doing that via the EGR or the A/D input on the DHP itself.

Any ideas?

Turning the input into useful data depends on your data logging software.

I have a DHP...

I dont use DHP.

Not all DHP users use the "built in" software to log.

I just need to know what is physically wired. I'll figure out the rest, thanks!

The brown EGR wire gets the 5 volt output from the wideband to go to it. I sometimes put the wideband ground to the EGR ground to increase accuracy.

The IAT does not operate on voltage, so you would need to build a voltage divider, and setup your own calibration in order to run it on a 5v input somewhere (ac/egr/dhp box). I would probably build the voltage divider with a 5k ohm resistance, and splice into the 5v rail on the PCM.

I ended up making a little switch for my 2 temp sensors... Make 1 run, then switch and make the run again after the intercooler recovers. Preintercooler temps shouldnt vary much in a few miles.

Does anyone know exactly what each wire in the EGR plug does? There's 5 of them.

Pin D grey = 5v reference
pin c brown = pintle position
pin B black = pintle position ground
pin A red = valve control
pin E white = valve control

Colors are different sometimes.

From left to right my wires are light brown, light brown, tan, black, light brown.
I don't see any letters on the plug.

Originally Posted by SnowFlake

From left to right my wires are light brown, light brown, tan, black, light brown.
I don't see any letters on the plug.

and you call me an idiot.

Even if it isnt labled (which they are) it is easy to determine if you know the order of the first 5 letters of the alphabet, and 2 wire colors that do line up.

I have the sensor wired up to the EGR... it seemed like it was working for a few pulls and then it just started moving incoherently. I tried hooking it up to the IAT that's still in my intake tube and the same **** happens... just moves without any sort of relevance to what's actually going on.

Voltage to the EGR is 4.84 at all times when I wired it up independently instead of tying in power from the regular IAT.

Bill, it will never work without a proper voltage divider circuit. This clown is just completely lost.

Originally Posted by darkhorizon

Bill, it will never work without a proper voltage divider circuit. This clown is just completely lost.

Excuse me for not being a pro in how the PCM interprets voltage from the IAT... I've since figured it out and am happily logging IAT2.

damn ur a bad ass.

and oh, you wouldnt really need to be an expert to realize every other sensor on the motor that uses 5 volts has a ground and a signal output wire on it... An expert would not be required to make that observation.