Originally Posted by Graminal95

Well I just got back from another 3000+ mile trip in the 240Dt that is over 6500 miles in 24 days!

I don't have any dyno sheets and won;t be getting any unless its less then 25 bucks for the pull and I don't think that is going to happen anytime soon.

I know that with the EGT's at close to 1100*F and around 10psi of boost I am making at least 100hp at the crank. STT was making 100hp and 186nm with 8psi.

That is assuming that STT was giving real numbers.

I don't have a restriction orifice in the turbo feed line and my oil pressure only dropped a little ~.5 bar at hot idle from the previous non turbo levels. In fact after driving over 6000 miles on this oil (a little thin at 5w40 synthetic) and driving in 102 degree heat in death valley a few days ago and cruising up 8 to 10 percent grades for 30min at a time. The oil pressure at idle without the idle increased with the knob and the AC on the whole time was ~ 1.6bar a bit higher then the 0.3Bar mercedes says is OK at idle. The coolant was running a bit hot, 115C was the highest and still OK according to MB. The new rad. is for better cooling and so that I can fit an intercooler in.

My egts have been fine in the north with the humid cooler air, but down in the desert I have not been able to put my foot down all the way as the temp would climb to over 1100F. The turbo lag is well just that lag and a lot of it. Right now I don't even use the waste gate and will see ~14psi max with about 4-5psi at cruise with egts in the 650-800 range depending on speed.

Over the last 6000 miles I have seen all sorts of temps, fuel grades, hills, flats, high altitude and low, stuck in traffic and cruising all day (~18hrs) at 75mph and all in all I have been getting ~31mpg average. Not to bad for the old gal.