The original factory Nissan exhaust is on it atm, noticed some cracking on it just below the dump pipe so was wanting a new exhaust and that pushed the finance minister into letting me, the redback system has the egt and O2 bungs, so was thinking while at it I would hook up the egt gauge, will have a search on which wire to tap into for dash lights for the gauges ect.

But back to egr backing plate, should I be looking at cleaning the manifold ect before putting the egr plate in? And how much of a job is it to remove manifold ect? Will have a search for that as well tho have already but didn find a step by step on it for the GU 02 ZD30 Di. Engine was a new nissan crate engine and currently has 68 tho on it since being replaced, so wondering if there is any need to clean manifold, tho noticed a fair bit of oil on old intercooler and around turbo from the piping hence the provent to hopefully stop that.