I would simply remove the vacuum line from the egr valve and plug it. I seriously doubt it would throw a code on a car this early. maybe on the later card with OBD, but even if it does throw a code, who cares? just stare at the light... it becomes your freind in no time at all

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Matt
2003 Jetta Wagon TDI 145,000MI
1999.5 Jetta TDI 287,000MI
2001 Suzuki SV650S 26,000MI
2008 Yamaha Vino 125 11,000MI
http://www.crazymatt.org