Speed Density eManage Ult help

[blindmist]

Hmmm. What should I do? What should I do? I just feel really confused now.

[B-Man]

That is one open I guess, I decided against that because I only want one variable for intake temps and fuel, and I want to control it. I am running a fixed temp to the ECU, and then running the GM IAT directly to the EMU. However, I do have a problem with this. At this point in time I do not know the correct pull up resistor (bias resistor), so ambient temps show -3c right now. I am working on it, but so far have no solution other than grabbing a variable resistor and playing with that until it reads ambient, but if I can avoid that and someone already knows the solution I would consider that ideal. I know FRED 62 in France runs it this way, but he has not contacted me back yet with what value resistor he is using.

I've read 2.7K Ohm between IAT input and ground, but that's from the EMU thread on 3stech that I believe you've seen. Have you though about using a potentiometer?

Locking the ECU temp is the best way to go IMO. Think of it this way. If the ECU adjusts .5% duty cycle for temp, expecting 360cc injectors, it's actually going to add .5% duty cycle on whatever injectors you have (680cc in my case)

[Monster Stealth]

I've read 2.7K Ohm between IAT input and ground, but that's from the EMU thread on 3stech that I believe you've seen.

Locking the ECU temp is the best way to go IMO. Think of it this way. If the ECU adjusts .5% duty cycle for temp, expecting 360cc injectors, it's actually going to add .5% duty cycle on whatever injectors you have (680cc in my case)

I do have the ECU IAT's locked. I am thinking that if I match the resistance of the OEM ECU IAT input then I should be able to swap out my current bias resistor and my temps will read correctly. I am just waiting on a local friend of mine with stock MAF and wiring to get me that number.

[B-Man]

Sorry, I was directing the locking ECU IAT part more to blindmist.

You're just trying to swap resistors to lock your temp to something other than -3*C? Use a potentiometer until you get the resistance you want?

[Monster Stealth]

Sorry, I was directing the locking ECU IAT part more to blindmist.

You're just trying to swap resistors to lock your temp to something other than -3*C? Use a potentiometer until you get the resistance you want?

I am trying to find the correct bias load resistor from my 5v source so that the EMU gets the correct temp. Right now with a 2200 ohm resistor it shows -3c at ambient which obviously for Sept in Indiana is not correct

[B-Man]

Ah, for the EMU. I think I get what you're trying to do now.

[blindmist]

I am still lost as to what this A/F harness I have for the EMU is for, and where it hooks up.

[Monster Stealth]

I am still lost as to what this A/F harness I have for the EMU is for, and where it hooks up.

It is the harness that integrates your WBO2 into your EMU, it will plug into the option 1 or 2 port along side the Greddy MAP sensor.

[blindmist]

It is the harness that integrates your WBO2 into your EMU, it will plug into the option 1 or 2 port along side the Greddy MAP sensor.

I guess I should get a wideband huh?

[Monster Stealth]

I guess I should get a wideband huh?

Yes sir