In a message dated 12/9/2007 6:27:33 AM Central Standard Time,
rccpl1@yahoo.com writes:
> gm all does the egr valve have any real purpose or can it be blancked off
>
The EGR valve does two things: The first is to dilute the part throttle
mixture and reduce peak combustion temperatures and reduce NOx emissions. The
other is to dilute the part throttle mixture and reduce peak combustion
temperatures and reduce pinging. Since it will close at full throttle it has
no effect
on full throttle performance.
If you are running a late model TR6 your compression ratio is low enough that
pinging is not a problem anyway so if you don't care about emissions you can
block it off with no effect to the car's operation.
Dave
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