One thing you can do is get rid of your EGR and make a small plate where it goes into your manifold ....or one trick i heard was to drill it while ideling and the exhaust pressure will blow the shaving out the hole you drill ...personally i'd take it off to drill


'87 Raider 4D56 ...lots of boost
'86 Toy xtra cab 2L-T
'82 Benz G Wagen 300GTD
'82 VW Caddy TD
'79 LJ81 Zuk p'up 1.6TD