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I have a 1998 T/A T56 car. I am going to be swapping in a 4L80 in the next year or so. A few years back, I picked up a '1999 PCM Serv No 09354896 w/ Hdw No 16220610'

Is that PCM worth swapping...

Mine is the 30-4100 AEM UEGO wideband gauge

http://www.schnitzracing.com/manuals/AEMWBK.pdf

The only thing I can think is that the MPVI Pro is using the OBD2 port as a ground. Basically I did the same thing you did, except I have a self tapping screw and a ring terminal coupling the wire to...

If you do that, it isn't being grounded. The EIO plugs into the HPTuners Pro MPVI box, which plugs into your laptop which is not grounded.

You need to get both to a good chassis ground

I have 4 wires:
White- 0-5v output (going to EIO Pin #1)
Black- Chassis Ground (going to a good chassis ground)
Red- 12v power (going to a switched 12v source)
Blue- Serial Output (capped off)
...

I just went out and took the gauge ground and EIO pin #5 ground wire and grounded them together. I sanded the paint off the chassis in front of the airbag module. Then I used a self tapping hex head...

.....please elaborate

Thanks for the reply!

Hey everyone. I've searched for my answer and could not find it. I have a specific question about the wiring of my AEM UEGO wideband gauge.

Currently, I have the following hooked up:
-Red wire to...

From the dead.....

Right now I have the following hooked up:
Red wire to 12v
White wire to EIO Pin 1
Black wire to ground

EIO Pin 5 to ground (different than the AEM ground possibly?)

Is...

I will start tuning the VE and MAF then....I have your guide printed Jeff. Thanks

Is this what is causing the car to go really lean?

When I was saying OL, the car was in fact in OL because it...

No help?

I've been battling some tuning issues recently. I have been having a situation that I will start the car and back out of the driveway in 20-30 seconds. My driveway is small and on a slight incline so...

There's nothing wrong with the 98 pcms. For most of the setups that people are running (i.e. non boosted setups), the pcm will handle the engine functions fine.

Steve (Frost) is in the middle of...

What are the other parts/sensors which would cause a problem? I am going to switch to the newer 99+ ECT sender, and purchase an aftermarket fuel gauge to work with the stock senders ohm rating. Any...

Thanks for the replies and info!

I have already purchased a new harness. It should be a one for one swap. I am going to investigate it when it arrives next week. The reason I purchased the wiring...

Ok. So that answers my question. I saw that thread on tech. I was just confused with the sticky saying "send it to Keith....".

I already have a 2002 A4 tune in the new PCM so I am set. I will just...

Hello
I currently have a 1998 Pontiac Trans Am LS1 T56/M6 and your MPVI Pro software.

This winter I am swapping a 4L80e transmission into the car. I purchased 12200411 (2001-2002 F-body) PCM with...

Anybody????

Taken from a Ls1Tech sticky:

"~ The PCM "WILL" control the 4l80e. Ive seen this alot on here where people say you have to buy a standalone contoler from TCI. If you want to go that route then...

Hello
I currently have a 1998 Pontiac Trans Am LS1 T56/M6 and your MPVI Pro software.

This winter I am swapping a 4L80e transmission into the car. I purchased 12200411 (2001-2002 F-body) PCM with...

I unistalled the USB drivers and reinstalled them. Problem fixed. Thanks

Windows XP Pro. I get a ding. I installed the A or B driver, whichever one it asked for with the HPT CD.

I'm having the same problem. The OBDII port has 12v power- checked with a DMM.

Checking the driver thread Ken posted now. I reformatted my laptop and reinstalled the software. Will not allow the...

I put in the stock values for over/underspeed and the problem appears to have been fixed. I am going to drive the car like this for a little while. When the weather gets nicer out I will go through...