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Old 07-10-2017, 11:59 AM   #8
chevy_mike
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Join Date: Jul 2006
Location: San Diego, CA
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Re: FiTech Fuel injection

Quote:
Originally Posted by ElKotze View Post
Aftermarket EFI systems have no altitude compensation. A well adjusted carb is actually less problematic.
Actually that's not true. They measure O2 reading (wide band O2 sensor) and as you go up or down in altitude, the available O2 will change. The EFI will compensate based on the A/F ratio. These newer EFI units learn unlike the older EFI units that just use a specific fuel table only.

There have been many reports of people with these newer EFI having great success with altitude issues, going in 5000-6000 ft elevation changes and the vehicle runs great and starts easy. Almost all of them said the same thing, they could never get their carbs to make that big of a swing and run correctly.
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