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Can changing the fuel pump/fuel pressure regulator hurt my mpg?

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Old 02-23-2010, 03:58 PM   #1
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Default Can changing the fuel pump/fuel pressure regulator hurt my mpg?

I got them changed about 7 months ago, and shortly after, I began getting about 6-7mpg and my 02s are fouling out often. I've been running around in circles trying to find the problem and cannot figure it out. Could something with the fuel pump/fuel pressure regulator cause it? The fuel pressure shows 58psi, and lowers a couple psi under acceleration.


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Old 02-23-2010, 03:58 PM
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2002, 97, change, changing, firebird, fuel, harm, hurt, mpg, performance, pressure, pump, regulator, replacing, ws6

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