[TR] egr valve

[Dave1massey at cs.com]

In a message dated 12/9/2007 6:27:33 AM Central Standard Time, 
rccpl1 at 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