Running a Northstar on a LS1 PCM. - Page 3

CadillacSTS2003 · #31 (**permalink**) 12-02-07, 08:14 PM

do they run a standard N* car though...

AJxtcman · #32 (**permalink**) 12-02-07, 08:18 PM

My car runs for 3 seconds.

I need to setup a different type of VTD bypass

The car sound BAD A$$

CadillacSTS2003 · #33 (**permalink**) 12-02-07, 09:10 PM

unplug the VTD?

AJxtcman · #34 (**permalink**) 12-03-07, 12:50 AM

Quote:

Originally Posted by CadillacSTS2003

unplug the VTD?

I have no VTD module. I have figured it out and hope to drive this soon.

AJxtcman · #35 (**permalink**) 12-04-07, 12:01 AM

It runs for a while and then stalls.

If I hold it at 2000 it will run great. If I change the throttle angle rapidly it stalls.

This setup is supposed to have an LS1 MAF sensor. Well I have one. I will need to figure out how to attach it and wire it.

AJxtcman · #36 (**permalink**) 12-05-07, 10:36 PM

My head hurts

msta293412 · #37 (**permalink**) 12-06-07, 09:21 AM

DONT GIVE UP!.......Theres got to be a way.....You have all of our suuport......

darien99 · #38 (**permalink**) 12-06-07, 11:39 PM

I must be missing the boat here, but what will a LS1 pcm do for our northstars besides give us fuel and spark maps that weren't designed for our motor?

AlBundy · #39 (**permalink**) 12-06-07, 11:43 PM

AJxtcman · #40 (**permalink**) 12-07-07, 12:22 AM

Quote:

Originally Posted by darien99

I must be missing the boat here, but what will a LS1 pcm do for our northstars besides give us fuel and spark maps that weren't designed for our motor?

This program in the PCM is built for a NORTHSTAR

This is a Custom High Performance Program built by GM

The LS1 PCM has been hacked into. That PCM and a fully aftermarket tunable program is one way to make a caddy run hard.

pjw315 · #41 (**permalink**) 12-24-07, 02:22 PM

Aj are you giving up on this project?

AJxtcman · #42 (**permalink**) 12-24-07, 03:40 PM

I have a few small bugs. I got the rest of the piggyback harness done. I am running two PCM's. I push out a pin in the jumper and had no charging system. I just fixed it. It is insane fast. BTW 158 top speed.

I was under the impression it was 200+.
My VSS signal is messed up so 35 mph = 158 in the Shelby PCM, but the stock PCM shifts at the correct speed. after hitting 158 it will cut out

I will be posting more today and tomorrow

pjw315 · #43 (**permalink**) 12-24-07, 04:50 PM

I am looking forward to your posts. Do you plan on doing a dyno run once you have all the bugs worked out?

AJxtcman · #44 (**permalink**) 12-24-07, 05:25 PM

Quote:

Originally Posted by pjw315

I am looking forward to your posts. Do you plan on doing a dyno run once you have all the bugs worked out?

Yes this will take a trip to the dyno.

I have the schematics for the following
Sensor connector terminals
------------- A------------------B
99 Deville -- High (PPL 401)----- Low (YEL 400)
99 Seville -- Low (PPL 401)----- High (YEL 400) This is my car
99 Carmaro -Low (LTGRN/BLK 822)--- High (PPL/WHT 821)
99 Shelby -- Low (LTGRN/BLK 822)--- High (PPL/WHT 821)

I am going to swap the two wires at the Shelby PCM and see if it works

AJxtcman · #45 (**permalink**) 12-25-07, 07:21 PM

Way to much power for for my already weak trans.
I can't hold the massive power back. toasted my trans.

video soon