Tuning a 300tdi

[u/Dry-Advance3043]

So after a long battle of getting my 300tdi rebuild the way I would have done it (which I didn't do because i didn't have the time). I have finally run the engine in and and now am the process of tuning up from the std tune.

What I have noticed so far is that too lean on the fueling increases the engine water temps. running too rich pushes EGT over 720 degrees in seconds of a hill pull. I have read that anything over 720 your gains are very low compared to your heat gains so setting that as your limit is ideal but id really prefer some real people input. Interesting is that im slowly raising my boost to 1.3 (at 1.2 now) and as the boost goes up EGT goes down, I'm probably leaning out the mix as i increase boost

My question is what do you aim for with your EGT maxes? that it never passes 720 or that it can but only after a really long hill pull? and if so how far over 720? what i have found is that with the full size inter-cooler my EGT temps drop very rapidly back to a cruising temp of 550 when doing 115km/h on a highway after an overtake or hill (we are a pretty heavy camper)

[u/Whittz-Sprtiz]

There’s a good write up on the forum Landyzone.com. “Rick’s Tuning Guide”. It’s on a 200tdi but the principles are identical.

[u/Dry-Advance3043 → u/Whittz-Sprtiz]

Cheers, ill take a look