ECMLink SD Wiring

[stevenr816]

Getting my ECM Link friday and had a question on wiring the map sensor.
IAT sensor is easy, the MAP wiring is easy but confused on the input wire.

The PnP kits from ECM Link, Maft Pro, etc all plug into the stock connector so can I use the original MAF input signal wire for the MAP signal? ECM Link says you have to use 1 of the inputs.

 

[9!'clipseDOHC]

Getting my ECM Link friday and had a question on wiring the map sensor.
IAT sensor is easy, the MAP wiring is easy but confused on the input wire.

The PnP kits from ECM Link, Maft Pro, etc all plug into the stock connector so can I use the original MAF input signal wire for the MAP signal? ECM Link says you have to use 1 of the inputs.

This is how I'd wire it up...

IAT Wiring
It doesn't matter what wires goes where coming out of the back of the IAT sensor, both can go to either a ground or signal wire.

- Cut the GRN/ORG wire at the MAF connector pin 8 (IAT signal).
- Cut the GRN/BLK wire at the the MAF connector pin 6 (sensor ground).
​

Omni MAP Wiring

- TAP the RED wire from the MAP into the GRN/RED wire coming from pin 1 of the TPS connector (5v power).
- CUT the GRN/BLK wire coming from pin 1 of the EGR valve connector (sensor ground) and solder it into the BLK wire of the MAP sensor.
- CUT the BLU/YEL wire coming from pin 2 of the EGR valve connector (EGR valve signal) and solder it into the BLU wire of the MAP sensor.​

MAF connector pin out

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TPS connector pin out

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EGR connector pin out

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These instructions are thanks to Gofer. This is how I wired mine and it's been working great. This is without the plug and play harness and with no MAF. Hope this helps!

 

[stevenr816]

So this setup is for the EGR input? Since you use EGR ground and signal?

Anyone know if you can use Pin 10 (MAF) input?

 

[gixrman]

sdsetup [ECMTuning - wiki]

 

[9!'clipseDOHC]

So this setup is for the EGR input? Since you use EGR ground and signal?

Anyone know if you can use Pin 10 (MAF) input?

Here are the available inputs per ECMTuning's Wiki page: externalsensorinput [ECMTuning - wiki]

1G ECU
■EGR Temp Input (ECU Pin 15) - Not 100% compatible with some sensors, such as the AEM WB
■IAT Input (ECU Pin 8) - see IAT/Baro Notes below
■Baro Input (ECU Pin 16) - see IAT/Baro Notes below
■Front O2 (ECU Pin 4) - Only usable when "Open Loop" option is selected (V2 or V3), or narrowband O2 simulation is enabled (V3 only).
■Coolant Temp Input (ECU Pin 20) - (V3 only) - This will leave the car in "Open Loop". "Lock Coolant Temp" must be selected, to work properly. Use only as a last resort and only temporarily unless you fully understand the issues.

Pin #10 (Air FLow Sensor) isn't listed at all. Pins #8 and #16 are both part of the MAF (IAT/Baro) but I used #8 for the IAT.

Here is a copy of the 1g ECU pinouts:

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[stevenr816]

Ive looked at all of that, you guys arent reading all that I asked.
I asked if i can use Pin 10 (MAF) input since the ECM Link, MAFT Pro Speed Density harness plugs right into the factory connector

 

[9!'clipseDOHC]

Ive looked at all of that, you guys arent reading all that I asked.
I asked if i can use Pin 10 (MAF) input since the ECM Link, MAFT Pro Speed Density harness plugs right into the factory connector

No, you're not reading what I posted. According to ECMtuning, Pin #10 is NOT an available input. If it plugs into the factory MAF connector then it is using the Baro input.

Here is ECMtuning's plug and play Speed Density Cabe and here is a quote:

This cable connects the IAT sensor to the factory Intake Temp input pin and the MAP sensor to the factory Baro input pin. So when configuring the ECMLink software, those are the pins you'll need to specify and use.

 

[stevenr816]

And you're not reading what I posted. According to ECMtuning, Pin #10 is NOT an available input. If it plugs into the factory MAF connector then it is using the Baro input.

Nice, dont see anything about the baro on the MAFT Pro site. But on ECMLinks site it does.
Thanks

 

[9!'clipseDOHC]

Nice, dont see anything about the baro on the MAFT Pro site. But on ECMLinks site it does.
Thanks

No problem. Are you planning on setting up SD without a MAF? If so this guide is very helpful: http://www.dsmtuners.com/forums/articles-tuning-ecu/395564-how-tune-1g-v3-sd-ecmlink-no-maf.html. Just download the attached pdf file.

 

[stevenr816]

Was going to start it on the 2g maf, then once I set up the injectors and randomness up was going to wire everything in. Drilled and tapped the manifold for the map and welded an IAT sensor right off the elbow. Just waiting for Friday.

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[9!'clipseDOHC]

Was going to start it on the 2g maf, then once I set up the injectors and randomness up was going to wire everything in. Drilled and tapped the manifold for the map and welded an IAT sensor right off the elbow. Just waiting for Friday.

Well keep in mind that you won't be able to use your plug and play cable if you are using a MAF because the MAF will be plugged in to that connector.

 

[stevenr816]

Ya, MAF to start it setup up ECMLink, then I'm cutting everything to wire up the SD

 

[perks563]

I ordered link but am waiting as I need an eprom conversion which is back ordered. My question is where is the best and most accurate spot to connect the MAP sensor? I would love to drill and tap a spot for it next to the brake booster nipple like Steve posted in his second picture above, but am not going to take of the manifold to do that.

So where is the best place to tee into?

 

[9!'clipseDOHC]

I ordered link but am waiting as I need an eprom conversion which is back ordered. My question is where is the best and most accurate spot to connect the MAP sensor? I would love to drill and tap a spot for it next to the brake booster nipple like Steve posted in his second picture above, but am not going to take of the manifold to do that.

So where is the best place to tee into?

"Best place" and "tee" don't go together. I installed mine in the same place as the OP. Here is mine:

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[perks563]

"Best place" and "tee" don't go together. I installed mine in the same place as the OP.

I've been doing a lot of reading on this and I saw that pic of your set up earlier today. I understand what you're saying in that it isn't ideal to use a tee, and believe me, I would love to drill and tap its own source, but I don't really want to take the manifold off.

Suppose I do end up taking the manifold off, do you know of any write up on how to take it off? Kinda like a how-to.

Thanks!

 

[9!'clipseDOHC]

I've been doing a lot of reading on this and I saw that pic of your set up earlier today. I understand what you're saying in that it isn't ideal to use a tee, and believe me, I would love to drill and tap its own source, but I don't really want to take the manifold off.

Suppose I do end up taking the manifold off, do you know of any write up on how to take it off? Kinda like a how-to.

Thanks!

Check out this thread, sdhose [ECMTuning - wiki], on ecmtuning for more info on why its not a good idea to use a tee on a MAP sensor.

There is a tech article on tips for removing the intake manifold: http://www.dsmtuners.com/forums/art...257-tricks-removing-your-intake-manifold.html but its not that hard. I found it easiest to get the lower bolts off from the bottom with a regular wrench. The top bolts are pretty easy to get at from the top. Then just clear a path to slide it back and up.

 

[perks563]

Check out this thread, sdhose [ECMTuning - wiki], on ecmtuning for more info on why its not a good idea to use a tee on a MAP sensor.

There is a tech article on tips for removing the intake manifold: http://www.dsmtuners.com/forums/art...257-tricks-removing-your-intake-manifold.html but its not that hard. I found it easiest to get the lower bolts off from the bottom with a regular wrench. The top bolts are pretty easy to get at from the top. Then just clear a path to slide it back and up.

Thanks for the links! The one about the MAP sensor convinced me to drill and tap. And the second link hopefully will make everything easier. Thank you again!

 

[9!'clipseDOHC]

Thanks for the links! The one about the MAP sensor convinced me to drill and tap. And the second link hopefully will make everything easier. Thank you again!

You are welcome. Yeah I didn't want to have to pull my manifold either but its better to do it right and to do it right the first time. If there is anything else you need, let us know.