Originally Posted by BHutch

Hello All,

This is my first post and wanted to start off thanking everyone on this forum for the excellent information.

I've done several searches about EGR and ARV valve disabling but I can't seem to find a consensus on the ARV valve. I have a 1985 300SD federal and I currently have BB's in the EGR and ARV vacuum hoses for "testing". I noticed a huge boost in low RPM performance and less of a turbo lag. I saw a mention in some ARV thread that the 85's don't have overboost protection for the turbo so the ARV is necessary. Am I risking damage with the ARV plugged? Thanks for your time.