Mazda Speed 3
Install manual.
(Not liable for errors in installation. If unsure at any time consult a Professional)
Start by taking the battery lid as well as the ECU cover off and locate the
wires according to this diagram.
The connector your want to look at is the one on the left and there are 4 rows looking at it from the angle of the picture starting from the Top to
Bottom:
The Wires/Connections you're looking for are;
Connector 2AG white/green wire is the signal - Top Row 7 Pins from left
Connector 2AU green/black wire is the 5v source - 3rd Row 4th Pin from Left
Connector 2AV brown/green wire is the ground - 4th Row 4th Pin from Left
Once the wires are located, you will want to shave a little area on them so
you can solder in the connection from the Map Clamp....>DON'T cut any wires,just strip off some of the shielding.
Now on the King Clamp, Red Wire is the 5v, Black for Ground and Green for Signal.
Here is an example
Another Angle
And here is the finished product. I used some wire tubing I had laying
around to run the wires through and mounted the Map Clamp to the side
of the Battery Box (where everything is as you can see).
Map Clamp
Ok how do you tune the King Clamp? Well there are 3 ways.
#3 is recommended
Tuning is done by tuning the tiny flat head screw on the side of the box to
the Left or Counter-Clockwise.. Be very careful not to turn too fast.. Start
with 1/2 Turns to the left. Using the methods below to lock it in. (Remember
its set all the way to the right when you recieve the unit dont go any more
or you can damage the unit.)
1. Use a Dash Hawk or other device that sees what the ECU sees for Boost
and set it where you want it boost wise. You can set the Map Clamp all the
way to the left and make a run. The ECU read -8 PSI max. I then turned the
clamp clockwise till I got the setting I wanted. I set the Map Clamp at
15.08PSI for now which seems to be pretty damn good. I did a few pulls
and my MBC was set to 19PSI and I didn't have any issues at all.
2. Connect a long wire to the Signal and one to the Ground wires on the
connections before you tape them up and then ghetto run them into the
cabin of the car. This way you can have a buddy with you while you're
making runs and they can monitor the Voltage using a Voltage Meter. Do
a run, see what the voltage is and adjust as needed. The common settings
are between 3.5 and 4.0.
3.**Recommended** You can go to a Dyno Shop, plug it in to the signal and ground to monitor voltage while doing dyno pulls and see HP increases
as well as making sure you AFR's Stay good.
