I had to disconnect the EGR to get the stutter out of mine. I just haven't managed to get around to reducing the EGR inlet pipe and hooking it back up. You may want to try pulling the hoses off the EGR and plugging them to see if that's the direction you need to go.

90 Xcab V6
3.0 Rebuilt/Balanced
P/P w/OS valves
Downey Hdrs,Jacobs Ign
5.29's,Tru Trac+Lockright
4"TG SAS+Rear Kit on 35's
(DOA Racing = $1200 lesson <img src="/forums/images/graemlins/angry.gif" alt="" />)
www.performancecylinderheads.com