Positive vs negative EGR valves
08-25-2003, 02:59 PM
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Car: 91 Z28 Vert
Engine: 305
Transmission: TKO
Axle/Gears: 3.55 10-bolt
Positive vs negative EGR valves
I have heard that there are two different types of EGR valves....positive and negative ones...can someone explain me the difference between the two and how one can determine visually how to differentiate between the two.
Thanks,
Dave
Thanks,
Dave
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