egr simulators and my check engine light

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ELiminating the EGR is not worth any performance unless you have a custom tune to readjust the part throttle air/fuel ratios.

At WOT the EGR is off, so there is nothing to gain.

If you are throwing EGR codes, your best choice would be to fix the problem rather than trying to baid-aide it.
 
If you posted the codes, it would be pssible to help .without them, no help - my crystal ball is in the shop getting a polish and wax job...