PCM Pinout

[Petrickjc]

I'm looking for the MAF/MAP Sensor output on the PCM, is there someone that knows the location and colour of the wire.

[Jack B]

I'm looking for the MAF/MAP Sensor output on the PCM, is there someone that knows the location and colour of the wire.

Pick it up at the sensor harness.

[Petrickjc]

I could do that but it still doesn't help me with the MAP Sensor output wire location, There are 4 pins on the map sensor as best I can tell #1 and #2 are for temp with #2 being the ground that leaves #3 and #4 one of which should be the 5V line the other the MAP output.

After running the car and using a voltmeter I got the following

Pin #1 5V Temp
Pin #2 Ground
Pin #3 12V Supply
Pin #4 5V MAP (Best Guess)

[Viper Specialty]

Not even close.

It would help if we knew what you were trying to accomplish. There are many indicators already that this is not something you should be doing. Not trying to be a dick, but if you are looking for a MAP sensor output on a sensor located in an area that obviously could never register manifold pressure......... you should step back for a minute and explain what you are doing before you make a mistake, cause damage, or end up pissing up a drainpipe.

I have no problem helping you... but I don't want to be party to helping you break something.

[donk_316]

He must mean MAF? MAP is something totally different.

[Petrickjc]

I am trying to hook up the Snow performance Stage 2 MAF/MAP to the car how ever it needs the MAF/MAP sensor output. I looked up the part number for the sensor and it is a Mass Airflow Sensor so for part number 05037945ab

Pin #1 5V Temp
Pin #2 Ground
Pin #3 12V Supply
Pin #4 5V MAF

If this is correct then I have found what I need to finish hooking the system up

[Jack B]

The MAP signal is cavity #1 at the MAP connector. The MAF signal is cavity #1 at the drivers side MAF/IAT connector. The connector bodies are marked with cavity numbers, they are hard to see, but, they are there. What is a Snow Performance Stage 2?

[Petrickjc]

Snow Performance Stage 2 MAF/MAP is Water/Meth Injection for N/A Engines

Are you sure about Pin#1 because when I checked it for continuity Pin #1 is one side of the Temp Sensor and Pin #2 is the other side

[Arizona Vipers]

Snow Performance Stage 2 MAF/MAP is Water/Meth Injection for N/A Engines

Are you sure about Pin#1 because when I checked it for continuity Pin #1 is one side of the Temp Sensor and Pin #2 is the other side

If you are installing this, you should really have the car tuned on a dyno for it.

[Petrickjc]

That is the next step after I have it installed

[Jack B]

Temp is PIN 4, find the marking on the connector body, MAF is Pin 1. Pin 3 is the return.


Snow Performance Stage 2 MAF/MAP is Water/Meth Injection for N/A Engines

Are you sure about Pin#1 because when I checked it for continuity Pin #1 is one side of the Temp Sensor and Pin #2 is the other side

[Petrickjc]

I had another look and you are correct I has the pins reversed in order when I wrote them down

[Arizona Vipers]

That is the next step after I have it installed

Cool let us know the results! I've never heard of a meth kit adding much horsepower on a naturally aspirated car. IMO, not worth the added weight and complexity, especially if your car is still under warranty.
It's always good to see somebody trying new stuff on these cars though, good luck!

[Viper Specialty]

I am trying to hook up the Snow performance Stage 2 MAF/MAP to the car how ever it needs the MAF/MAP sensor output. I looked up the part number for the sensor and it is a Mass Airflow Sensor so for part number 05037945ab

Pin #1 5V Temp
Pin #2 Ground
Pin #3 12V Supply
Pin #4 5V MAF

If this is correct then I have found what I need to finish hooking the system up

IMO, You should be using the MAP not the MAF sensor.

However, in generally I don't condone the cheaper Snow type kits. If you want water/meth injection, get a truly high-quality mappable kit from a company like Aquamist. I have seen so many Snow Performance kits fail and/or leak into the engine that I would never use one. They are wildly inaccurate and failure prone from what I have seen.

[Jack B]

IMO, You should be using the MAP not the MAF sensor.

However, in generally I don't condone the cheaper Snow type kits. If you want water/meth injection, get a truly high-quality mappable kit from a company like Aquamist. I have seen so many Snow Performance kits fail and/or leak into the engine that I would never use one. They are wildly inaccurate and failure prone from what I have seen.

Dan

What kind of power gains with these kits on NA cars.

[Petrickjc]

Dan

I wasn't aware of the aqua-mist system, when I searched online I only found AEM and Snow performance, but thank you for the information. I'm not looking for huge gains here but will see how the addition turns out. The last piece of the puzzle is to find out what type of MAF sensor it is. Below are the 4 choices I have

Mitsubishi/Dodge (DSM etc)
1993 and Older GM (Low HZ MAFs)
1994 and Newer GM (High HZ MAFs, VW 2.0T etc.)
0-5V Hotwire MAFs (Ford, Toyota, 1.8T VW etc.)

[Viper Specialty]

Dan

What kind of power gains with these kits on NA cars.

I could see maybe 15-25 horsepower on a warmer day. They really only give you back power you would have otherwise lost. Generally however I dont use systems like these... added complexity and often downsides with regard to corrosion.

[Viper Specialty]

Dan

I wasn't aware of the aqua-mist system, when I searched online I only found AEM and Snow performance, but thank you for the information. I'm not looking for huge gains here but will see how the addition turns out. The last piece of the puzzle is to find out what type of MAF sensor it is. Below are the 4 choices I have

Mitsubishi/Dodge (DSM etc)
1993 and Older GM (Low HZ MAFs)
1994 and Newer GM (High HZ MAFs, VW 2.0T etc.)
0-5V Hotwire MAFs (Ford, Toyota, 1.8T VW etc.)

Like I said... I would be using the MAP, not the MAF.

And please, for the love of all that is holy, know how to properly handle wiring work on an automotive application before doing this. If you aren't competent with soldering, glue lined heat shrink, have good tools, etc... DO NOT do this job. You are just going to create a mess that is going to leave you towing your car or replacing wiring harnesses later. Quick-Taps, crimp butt connectors, and similar have no place under the hood of a car, or anywhere else for that matter.

[sadil]

If I was to install an Autoblip, would I get the 5V or 12V version?