Exhaust or intercooler???

[Wilburnator]

Full factory form I was getting high EGT's. So thats no exhaust, no intercooler, no dawes/needle. This seems to be the norm on the CRD. It's been a few years since Ive owned my 3L. But from memory cruising was around 250-300C. But under load EGT's easily went to 500-600C. Even simple things like booting it to overtake sent the temperatures right up there.
Those temperatures were definitely tamed by intercooler and dawes/needle vavles being set. I hardly ever went over 450 after wards.
I also never towed so don't know how it wold have behaved with a loaded trailer.
The biggest difference to my EGT's were made by the dawes/needle valvees, because the boost was no longer controlled by the ECU and it was no longer a yoyo up and down all over the place. Boost had a linear curve evenly distributed which helped EGT's immensely. Car loved it !

If and when you upgrade the factory intercooler, because mark my words it will leak at some stage... I recommend the DieselSmart exchange unit. Here is my factory and DieselSmart side by side... Good bit of gear. When I got mine it was around $450 exchange...

Thanks heaps mate, very good info!

Mine is a 2008 CRD unmodified other than what I have put on (catch can, Dawes etc.) But like yourself, fitting the Dawes was a massive improvement, still tweaking it, but huge change. Before that, Egts often hit 500ish even just with a bootful around the suburbs.

I still hover around 350 cruising, no doubt better intercooler and exhaust would improve that further. Biggest improvement was under heavy acceleration, it doesn't go up anywhere near as quick.

Recently did a run with our 18ft pop top (1600kgs) on a day that was 37 degrees & strong headwind - temp held about 550 all the way. Occasionally bounced off the alarm (600) on some small hills.

The return trip was better, hovered between 450-500 for most of the journey. Seems the CRDs inherently run higher EGT than most.

Look forward to seeing how the cooler and exhaust will go...




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