Stage 1 benefits?

[zx_volcane]

Remember, using the turbo makes the engine more efficient, you'll usually find that you'll get better efficiency by making ok progress than labouring the engine at low rpms... Rpms do not kill economy on diesels, much as you're told otherwise...

I've found max fuel screw affects my economy on long motorway runs, to the point that if its too far it goes through diesel like its leaking.

This has been the same on all cars I;ve had with a bosch. I run on bio diesel, but have switched back to dino with no discernable difference in mpg.

I track my mpg and consistently get around 40-44mpg if its been tweaked a bit (ie no smoke on boost), otherwise standard gets about 50+ on runs.

I'd be tempted to say that its down to driving style once you've got more power, but given on runs you just sit there at a steady pace I'm not so sure.

Surely if you increase injection duration per cycle, then on a mech pump you are chucking in more fuel per rpm regardless of wherever you're using it or not, so if you're not on boost you're just throwing it away.

Ground LDA pin makes sense as you can wind down the max fuel and still get an extra hit on boost, and not all the time.

I'd love to get 50+ on runs, but in reality just don't see it -although I'd welcome suggestions as to how to achieve it.