silverado13
GEAR HEAD
You could, but I don't see the point in doing it unless you're just plain bored. The single biggest thing the EGR system does is reduce pumping losses in the engine at cruise. Yes, it helps with emissions but that's secondary. It's only active under certain engine loads and throttle positions and can make a dramatic difference. Acquire datalogging software and you'll see what I mean by your MAP sensor readings.
can you explain what you mean it does? (reduce pumping losses in the engiine at cruise) im not familiar with it exactly