99 WS-6 EGR Delete

[dustinsbird]

I have a 99 WS-6 which is stock except for Kooks Off Road headers, Y-Pipe and a Flowmaster muffler. I removed the EGR and Air Pump. After installing the performance tune, I'm now generating P0404 & P0405 codes. Can you clarify the correct way to disable the EGR codes? I've disabled these codes individually but I want to be confident in my adjustments. Are there any other adjustments I need to make? The car seems to run great other than a noticable drop in fuel economy.
Thanks!

[mikel]

Make sure you set the AIR and EGR parameters to off in the adjustable parameters and then reinstall the tune.
The mileage is likely related to the EGR codes.

Thanks