Not sure how it effects driveability since I've never had mine off but I do know it'll cause a check engine light to come on if you don't have it plugged in or removed. I also saw in the Chilton's book that the diagnosis for a lot of idleing/surging problems were caused by faulty EGR systems. The check engine light means that the EEC-IV isn't getting a response from that particular valve. I'm sure someone can hop in and explain what types of problems no EGR's will cause but I should of added "to pass emissions" to the previous statment I made about the EGR system being a must.
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Red 1993 GT Street Machine
Best E.T. - 12.41/Best MPH = 108
Engine is a 1969 351 block w/393 stroker kit. Dynamic Roller Myte C4, 8 pt cage. Edlebrock Performer heads and Victor Jr. EFI, FRPP 30lb injectors & Cartech fuel system. MSD ignition. Sothside Machine bars & Sub-frames, adj. upper's, 3.73's, Koni rear shocks, much more
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