| Emission testing in the Illinois do not pass/fail for NOx.
I believe that a Lean tune will generate higher NOx. I wonder if your
emission chip is calibrated in such a way to get lower HC's.
My car ran horrible with an emission chip. I tested using my Extender
chip and passed no problem.
When the EGR fails you'll know it. The car won't idle correctly.
It might be worth trying your street chip and set the FP accordingly.
Good luck
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87GN PT-61, 50#'s,65mm Throttle & Hemco, 3"THDP, ATR Duals, 3.5"LS1 w/Trans+, SMC Alky, Baerclaw 12" Disks Front & Rear brakes, Hotchkis upper A-arms & rear lower trailing, ATR sway bar, Scanmaster, Cas FM, BeeCool rad w/RC dual fans, Art Carr 9.5 nl
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