ESM - VAFC NA App
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Joined: Mar 2003
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From: Tucson
first, i've heard that on an NA car, you shouldn't have much need for adding fuel when it comes to properly tuning a VAFC.
second, if you're still interested, you might look into getting an adjustable fuel pressure regulator.
third, for the best results, something like the AEM EMS is the way to go, but it's also the costly way to go.
second, if you're still interested, you might look into getting an adjustable fuel pressure regulator.
third, for the best results, something like the AEM EMS is the way to go, but it's also the costly way to go.
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Joined: Oct 2000
Posts: 30,809
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From: Sydney
Wow! That is like swallowing the spider to catch the fly.
The VAFC is fine for adding fuel in an NA application.
The reason it's no good in FI is that the MAP sensor is essential an intake manifold or boost sensor. In NA the value is always less than 0 (vacuum) and you can up it a bit to add fuel. In FI the value it returns is frequently positive (boost) and the ECU reacts badly to this. So you install the ESM (or similar) to cap this value and the ECU never sees boost.
You can use the V-AFC for NA and it'll do what it's supposed to do. But adding an ESM will have no effect whatsoever as it is designed to cap a value the NA car will never see.
The VAFC is fine for adding fuel in an NA application.
The reason it's no good in FI is that the MAP sensor is essential an intake manifold or boost sensor. In NA the value is always less than 0 (vacuum) and you can up it a bit to add fuel. In FI the value it returns is frequently positive (boost) and the ECU reacts badly to this. So you install the ESM (or similar) to cap this value and the ECU never sees boost.
You can use the V-AFC for NA and it'll do what it's supposed to do. But adding an ESM will have no effect whatsoever as it is designed to cap a value the NA car will never see.
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Pakisho
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Jan 19, 2004 02:52 PM