I would like to summarize all I have got to know about diesel performance over the years, mainly from reading over the internet/forum.

As mentionned in the title, I don't intend to explain how to tune a MB, I don't know that yet, I just want to make sure I have got the theory right. Then I will move to specific actions to do on the car...

So, to increase horsepower from a turbodiesel engine (fully mechanical, no electronics for now), we have the following options:

1. Increase max RPM
2. Increase boost pressure, thus requiring fuel delivery adjustment (if boost increases, fuel delivery must go up).
3. Add an intercooler, so to cool down the compressed air prior to its injection into the combustion chamber
4. To further cool air down (I would say for extreme cases only), add a water injection system.
5. Do a mix of all of the above!

6. Reduce restriction in exhaust flow (Thanks to MTUPower)

Am I on the right track?

I am parlicularly interested by the car I owned (the 92) which has the OM602.962

I know it has electronics (the EDS), but there are ways around this as explained by gsxr here:Wastegate Swap Thread

Then, if we really create much more power, we have to consider the handling of that extra power through the transmission and drive shaft. I have the impression I have read many times the differential isn't much of an issue, it could take lots more before requiring any substantial improvement.

Anything that sounds silly in what's above?

Thanks for any comments,

Bye

__________________
BigBen

'98 E300 Turbodiesel 244 000km
RIP '92 300D 2,5 Turbo 632 859,4km due to engine failure