More on the EGR Bypass Valve....Modify or Leave alone

[Roverron]

Originally Posted by bigruss42

I think we've established that it won't, not on our cars anyway, which is what the concern of the original post was all about.

Russ

I've never heard of anyone on any forum blowing up as a direct result of a disabled egr system. The L series boys have been disabling theirs for years too and previously mentioned, Landrover TD5 egr bypasses have been in use for years.

As for turbos that do fail, these tend to be VNT types which do not have a wastegate to control & protect from excessive boost pressure. So my theory is that its surge / overboost spikes combined with poor servicing, and possibly deficiences in the oil supply that kills them.
(One particular Garret one used on the Freelander Td4, Renault DCi and some BMW's, a GT1749 I think, seems to be prone to failing, so maybe its just a troublesome model)

Ron