Now I know how a Delica L300 can run if it's actually properly tuned... recently took it to CVI for an oilchange.. and at that occasion also did an airfilter change, got the ECU exchanged/rebuilt and a Delica-Tune-up.... I didn't really feel any dramatic difference aside from very smooth and virtually smoke free cold starts until recently... but hey... drove to Kamloops this weekend and back.... and what a difference...
In the past I was struggling to keep up with trucks or tour buses going uphill (the long incline from Kamloops on up Westbound)... and now, doing a comfortable 85km/h's... passing every freakin' big rig (yeeeehhaaaaa

The temperature never even came close to 1/3 of the scale... and then on the "home stretch" from Chilliwack on, I couldn't believe what I was doing.... the thing just kept getting faster and faster.... In the interest of maintaining a decent fuel mileage and so as to not out-glow my Turbo-charger, I of course eased off the pedal... but for a little while there I was doing over 130km/h (GPS confirmed) and I could have gone faster had I kept the foot down...
Now the best surprise: Fuel consumption is actually better... despite at times higher speed. I "only" burnt an average of 11 Liters per 100km as opposed to the usual 13 - 14 Liters on previous runs. I also noticed that I can now ease off the pedal a bit (and thus notably - on the gauge - reduce my turbo boost by a PSI or two) going uphill and still maintain adequate speed....
Guys, if you haven't done a deli-tune up and you feel your rig is particularly slow, then I can only highly recommend the procedure...
I don't even want to know how fast the machine would go if I had a larger diameter exhaust pipe on it... frightening

Anyway... the thought of maybe having to upgrade to an L400 after all (as unlikely as it ever occurred to me) has vanished into far distance again!