LETRIPP II XMS4A DIY MANUAL V2.1 www.perfectpower.com 1
PERFECT POWER XMS4A – Engine Management System DIY MANUAL V2.1
1. INTRODUCTION
Congratulations on the purchase of your first XMS4A engine management system. This
product is a leader in aftermarket engine management systems and it uses the latest 16bit
technology.
The XMS4A series is a result of many years of development. What started in 1986 as a hobby
has turned into a company that thrives on innovation and performance. With the latest
technology backing our products and new features continuously being added the XMS4A
surpasses any price or performance comparison.
The XMS4A uses “LETRIPP TECHNOLOGY” and thus can be tuned by the LETRIPP WINDOWS
TUNING SOFTWARE. The new XMS4A product range will undergo extensive modifications and
upgrading over the next few years. Please make sure you have the latest software version
which can be downloaded from our website www.perfectpower.com
.
2. PARTS SUPPLIED IN THE KIT
For your XMS4A to function correctly it is essential to confirm that all the necessary items
have been supplied.
The standard items supplied in the XMS4A kit include:
1 x XMS4A unit
1 x XMS4A harness
1 x Software CD that includes manuals and USB drivers.
1 x USB tuning cable
If you don’t have all of the above items please contact us immediately either via
www.perfectpower.com
or info@perfectpower.com.
The use of a suitable dual channel ignition amplifier is required for all installations of the
XMS4A product. We do supply a product with the required specifications called the Blue-Fire,
however you are welcome to make use of a different manufacturer (as long as the specs are
the same).
3. WHY SHOULD YOU READ THIS MANUAL?
The XMS4A standalone engine management system has a lot of features and even more wires,
which can be quite daunting. However this manual will guide you through the different stages
of installing the unit and finally tuning the engine.
To unlock or use the XMS4A to its full potential this manual MUST be read – even if you are a
novice or a professional at installing systems. If this is your first time installing an XMS4A,
then the manual will explain how to do things and things to avoid. Our goal is to get the
installation up and running with the least amount of time and problems as possible. As with
most manuals you may be reading this one because you are stuck or something isn’t working
and you need assistance.
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