there's an article named 'power broking' in :
August 2012 - MAGAZINE on landroveraddict
be about uprating a TD5 .. including EGR removal
no mention of dashboard lights
the article mentions 2 types of egr systems for the td5 ..
ends with the caution note:
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especialy with older engines, there is a real risk of at least one of the 2by5mm allen bolts shearing off when trying to undo.
to reduce the risk ..
1) only work when the engine ( and thus the exhaust manifold ) is cold
2) apply copius amounts of releasing oil, preferably a full day before attempting to undo them
3) apply localised heat using a heat gun to help break the sealed thread
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