we all fear what we don't understand. that said, i've got 1 truck with a functional EGR valve, and one where the entire emissions system has been deleted. if the valve is working properly, there should be no difference in power, because it kicks off when you step on the gas for the most part.

'79 sport 4x4 longbed <img src="/forums/images/graemlins/smile.gif" alt="" />
20/22R hybrid with EB's OS valves, 268c cam, offy intake, weber 32/36, thorley header, 5 speed swap, 34" LTBs, downey 3" springs, marlin hysteer, 4.88s and locked

'91 4x4 shortbed
22R-E, W56, the dd!