HDI more MPG

[Midnightclub]

De-cat would probably help the turbo spool maybe a few hundred rpm earlier, that'd help slightly with economy. A decent service too will probably bring that number up slightly.. Removing the aircon pump won't do a massive amount as there'll be barely any drag unless the A/C clutch is engaged.. Another thing to do, check for any boost leaks (they're easy to miss if you've not got an intercooler) usual culprit is the small rubber turbo pipe directly off the turbo, run some water with a bit of washing up liquid over any boost pipes and they'll soon start to bubble if there is