PCM / Gage / Security System electronics help needed

[G_T]

Background: I have a 2004 V10/6spd from a rolled SRT-10 truck. This is being transplanted into a 70 Dodge Charger. The V10 is on an engine run stand and runs with the original PCM and dash cluster. It has the RF key/SKIM security system as well.

There are 3 basic things I need to accomplish - but I need to find someone that can give me good advise or assist in modifications:

First, I will be installing new gages in the Charger. They can be electric or mechanical. Most likely Autometer Super Comp II full set of gages (tach, Speedometer, oil pressure, oil temp, volts, fuel pressure, fuel level). I need to know how to interface them into the engine system. Do I just procure new sensors of the appropriate type? Concerns I have is with tach and what to tap for signals. Etc. for all gages.

Second, I want to remove the SKIM/security system. I will NOT be using the original dash cluster. I believe the SKIM/security system, Dash cluster, and PCM all communicate via PCI to exchange VIN/etc. I will also be removing the cats/etc., So I believe I need to find someone that can reprogram the PCM to disable the SKIM stuff and modify the other necessary parameters. Who can do this?

Third, the engine needs to run with the reprogrammed PCM and WITHOUT the original dash cluster. Is this possible? I "think" the PCM needs a number of vital engine statistics/parameters while it runs. So I am concerned about ensuring the PCM sees this information AND getting the new gages to work.

This is a tall order - I have tackled every part of the engine swap - but this particular electronics/engine management/security system is out of my current league of knowledge. I have the 04 FSM and have poured thru it - what a nightmare, and of little help.

Should I just drop the idea of modifying the stock PCM and go with a full aftermarket ($$$$) engine mgmt system? Suggestions?

What I need is a professional tuner that has experience with what I am trying to do.

I have this posted in a couple of forums - including viperalley and VTCOA with no hits thus far.

[Meter Man]

Hello G_T,

Wanted to try to help shed a bit of light on the gauge side of your questions. In terms of speedometer setup, you'll want to go with an electric version. These are programmable and will talk directly with the VSS (vehicle speed sensor) located in your transmission. You'll want to catch what is referred to as the "high-side" signal prior to the ECU or PCM for proper operation.

Tach signal will need to be achieved with a DIS tach adapter installation to one of the coil pack assemblies on this motor. I can provide contact details for our tech support group who can assist you with the details of this installation.

Oil Pressure, Water Temperature, Fuel Pressure, and Oil Temperature would need to utilize gauge specific sensors for proper operation and accuracy. These are included with the product when purchased. Voltmeter is a simple two wire installation to power and ground.

Fuel level gauge will need to be matched to the sending unit that you will be using in the fuel tank. If you are utilizing the original tank and sender for this car this should be a 73-10ohm gauge. If you are utilizing a new or different tank design or sender it will be necessary to take an ohm reading from the sending unit at the empty and full positions to determine the operating range that the gauge needs to be compatible with. Another option would be to consider one of our programmable fuel level gauges which allow you to show them and empty reading and a full reading from the sending unit to which they calibrate their scale so long as the resistance range falls within a 0-280ohm scale.

Hope this info helps.

[G_T]

Kris,
Thanks for the reply - I've been digging thru the autometer website trying to find the information. I was just about to send an email to your tech support. I have everything except the tach figured out.

I would appreciate the tech support contact. At this point, I think I need the 9117 tach adapter and to wire it to the coil packs - a wiring diagram / how-to for connecting to the V10 coil packs would be greatly appreciated.


Thanks!

[Meter Man]

G_T,

PM'd you with contact info for support staff. Let me know if there's anything else we can do to help!

Thanks!