Mike, I am convinced that we need to get a better flow of air through the engine bay - as this will help reduce the ACT/ECT and even EGT's temps by a significent margin. That scoop/undertray is a good step in that it is directing the air upwards within the bay. OK, so we've now got lots of air going in to the engine bay (especially at 80 MPH + speeds) but the restriction is that this volume of air cannot quickly leave the engine bay. If ic could then all temps would drop.

As with the pics I sent to you a few months ago, even the simple mod of cutting out some of the bulk-head plastic (simple job) and allowing air to escape through the slotted wiper valence gives very positive results.

I have lower ECT/ACT with these mods AND GT series turbo putting hot water back into the engine than I had before the bulkhead mods - and remember that was with the old T4 turbo that was not water cooled.