Perfect Power PRS8 Standalone

LinuxRacr

Contributor
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2001 Mazda MP3
Perfect Power PRS8

I picked up a Perfect Power PRS8:

prs8.gif

over the net, and have been researching, and getting various sensors for it for over a month. I have the 2.5 BAR MAP sensor that goes to it, and would like to have the Lamda Wideband Sensor to go with it. If not, I'll just get my TechEdge fixed. Anyway, here are the issues I am having now:

I'm finally making headway with my Stand Alone project too. The Perfect Power PRS8 Unit has 2 harnesses that plug into it. A 24-pin connector (for input/output), and a 18-pin connector (for power output). There is also a RS/232 Serial connector for a Laptop/Carputer. ;) The 18-pin harness is just right. The issue I'm having is that the 24-way connecting harness...It's just ******* WRONG! None of the wires match up color-wise or location-wise the way they are supposed to, and there are even a few missing. :confused: I contacted Perfect Power USA about what it would cost to get new harnesses. Bob Ida said it would take 2-3 weeks just to order it (so they can include it with their big order from South Africa), and it would cost about $80....For this!:
prs_harness.jpg
:eek:
For some damn wires! Since I didn't get it from them directly, I have to pay for a new harness. After about a week and a half of knowing about this, I decided to do some investigating on the connector to find out why I got the wrong one. Upon studying the connector further, it seems that the connector used for the 24-way harness is the same as a Non-standard ATX EPS 24-pin connector used in rackmount servers to connect the EPS power supply to the mainboard. At first I thought it could be a standard ATX connector, but they only have 20 pins. Looking at the wires on the harness, it made more sense. There is also another connector hanging off 3 wires on the harness that is remeniscent of a CPU/Mainboard Fan connector?:wtf: So my conclusion is that the harness I have could possibly be from a EPS power supply of some type. Knowing this, I may just fix the issue my self. If I could just get my hands on the special tool needed to unlock the wire crips from the connector
mo110300.jpg
= $23
....Wait, I just did. I used two heavy-duty staples. Took a while, but all the wires are out of the connector. :D

These are the female mini-fit pins I had to pry loose:
minifit2.gif


From one of these:
epsatx.jpg


After looking the price of these mini-fit pins up, I know why the harnesses are so expensive. These little pins cost $1.70 each! :wtf: Get 24 of them, and you have spent over $40! Add the 18-way connector (which I'm glad I have the correct one) + Profit, and you are in the neighborhood of $80. Looks like I will be re-using some of the wires I pulled out. They just plug back in.

Come to find out all the issues I had with this unit (Missing 24-wire harness, lack of support for the PRS..ect.) are a direct result of the internet source I bought it from. I just want to say guys, be careful who you do business with, and beware of shady characters. Just want to say that MPNick has help me out tremendously with this project regarless of where the unit came from. Thank you!
 
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Here are some of the features of the PRS8:

The top of the range engine management system with the following features:


2 maps, each 765 sites.
In 4, 6, 8 cylinders applications
Up to 10 000 rpm at 8 cylinders
8 built-in injector drivers up to 6A
Idle control and driver for a 2 wire idle motor
CAM switching and driver
Fuel pump activation
Lambda close loop control
Throttle and rpm calibration: chose your own sites
Temperature and manifold pressure calibration to any external device
Retards and advances from a base point
Easy to tune
Wasted spark on normal ignition
2 trigger inputs, level settable, polarity adjustment
Boost control or fan control
RPM and boost fuel limit
Max boost and rpm recording
Alarm output
Turbo lag compensation option
Fuel pressure adjustment
Acoustic warning
DOS and Windows tuning

Assignable Functions:

Water pump activation and set point.
Extra boost injection activation.
Fan control output
Boost control output
2/3 wire idle motor output
Nitrous Activation
Camm switching output
 
Damn....mount that thing in the trunk and hook up 2 15's to it!

lol

This thing better be running by Jan 1 !! (I'm on vacation Dec 23 - Jan 1)
 
Kooldino said:
Wow, good stuff. Gonna try to run it in parallel like Braden?

DEFINITELY!!! Parellel all the way! With switches, and the J&S Safeguard.
 
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sounds like a project, yet a great system. I read about this in a few moths back in turbo mag.

Good luck,
cant wait to see the final result.
 
Wow.. thats some interesting news... I cant wait to see how this all works out for you, do you ever do anything that doesnt somewhere run into problems?
 
god damn, how the **** do you know all this s***? hopefully one day ill be half as smart as most of yall. to much s*** to learn, better make time this thanksgiving week to read up on this stuff.
 
Well, I just ordered the terminals I need from Mouser Electronics:

http://www.mouser.com/catalog/615/619.pdf

See picture C, and I ordered 24 of each of these part numbers:

538-43030-0007 - Molex Micro-Fit 3.0 Connectors
FEMALE TERM 20-24 gauge

538-43030-0010 - Molex Micro-Fit 3.0 Connectors
FEMALE TERM 26-30 gauge

Total cost: $5 and some change plus tax!.
The tool I need for getting the connectors out:

538-11-03-0043 - Molex Tools
EXTRACTION TOOL - $17.50 + tax

I'm not gonna buy the hand crimp tool. That sucker is expensive!!

538-63811-2800 - Molex Tools
CRIMP TOOL - $170.12 + tax! :eek: And they said that's one of the cheaper ones!
 
Communications problems

I powered up my PRS8 unit today, and tried to connect with my laptop via windows software. I started the windows software, and then powered on the PRS8 unit. Both lights (Red and Green) come on. Everytime I tired, I got the following error:

Runtime Error (6)

Overflow


And then the software crashes. The green light also goes off. Does anyone know what this means and why this is happening?
 
You got Pwned... try switching serial ports. Load the software first, set the settings then try to switch to online mode.
 
I used to get a runtime error with the SW for my PB until nick got an updated version done to fix this. Maybe you need a newer version that "talks" to it differently??? Are there any newer version on the website for ya?
 

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