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Written By: enginebasics.com
Each EFI car today is equipped with either a MAF sensor ( mass air flow) or a MAP sensor ( mass air pressure). Some cars are even equipped with both a MAF and a MAP sensor…..example a Mitsubishi Evo X. So what do these sensors do and what is the difference?
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Steps to properly convert a car to ethanol
 
Written by: enginebasics.com
For an owner or tuner that has never tuned an E85 vehicle it can be a frustrating experience. First, if you don’t know much about the background of E85, what it is, how much ethanol a fuel contains or any other basic facts, be sure to check out this article. If you are already familiar with the fuel then tuning a vehicle will be a cake walk.
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How to tune and set these parameters
Written By: Enginebasics.com
A term you are bound to run across when tuning an EFI fuel injection set-up, is the term “closed loop o2”. The purpose of this article is to explain how open and closed loop o2 works and how to tune and modify these tables.
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What is lambda, and the difference between narrow band and wide band 02 sensors?
Written By: Enginebasics.com
One the most important aspects of the combustion motor is the air to fuel ratio in the cylinder. Like all things that explode, having the proper amount of combustible fuel to the amount of air to sustain the burn is important. Having lots of air but no fuel will cause the combustion to burn very rapidly and hot, while having lots of fuel, but no air will cause the mixture to burn very cool and slowly. Having an overly gross amount of either fuel or air will cause the combustion to not even occur at all.
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How to tune for changes in AIT's
As Written By: Enginebasics.com
Tuning Air intake temp sensors have become vital to getting a good steady tune on modern EFI systems. The following is a article about how IAT’s (Intake Air Temps) effect how a motor runs.
First we need to understand the idea of Ambient. Ambient refers to the natural temperature of the air. For example of the air temperature that day is 80 degrees, and the AIT is reading 80 degree temperature air in the intake manifold then you would say that your IAT’s are ambient. In the same example if the IAT sensor was reading 90 degrees than you would say the intake air is 10 degrees over ambient.
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