My CRD had 150,000 odd K's when I sold it... It also had full instrumentation and I love to tinker and experiment
First thing to get is a Scangauge or equivalent and an EGT gauge that way you know within about 10 degrees and 1/10th of a litre per 100 K's what is happening
Next, Anti-grenading is not req'd so mods are for performance only.
I/C fan, makes a difference on a stock I/C up to about 50 KPH... after that useless (works best as a puller)... took mine off after I stopped dicking around on sand etc
Chip and exhaust give measurable extra power
EGR block - block it fully and use the Scangauge to clear any codes... if you block EGR you may need to adjust the VNT
CRD's run hotter, boost higher and love to rev so get used to giving them a bit of welly to get up to cruise on the bitumen then back off.
Dawes? well, I went as far as buying one but sold it as my truck went gangbusters without one
Bottom line is they drive different to the Di's so just sit back and enjoy the fun
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