9mm vs 11mm pumps

[Ed Doe]

Not trying to be obstructive, but what you're doing to the pump is fairly involved, and at this point people generally don't like to just give you all the answers. As said above, you need to get yourself on the US VAG forums; they've been doing this stuff for years, and there's a lot of info over there.

For my tuppence-orth, Darren 11mm'd my car (with my help-or hindrance!- I managed to put the camplate back in 180deg out of time, so it was advanced as f*ck and wouldn't run!) and provided you drove it like any other tuned Dtub it never smoked much, and it passed mot without touching the max. fuel screw either. I just pulled the LDA tube to the ic off, wound in the max throttle position screw and bunged a load of veg in it; fast-passed the smoke test...

So again, for a simple plug n play 'more fuel' mod, just bung one on. Until you're chasing Lobb or JP power you really dont need to be worrying about setting up the pump that much...

That was how it was back when I had my dt anyway, stuff may have changed now, but you cant do much wrong doing the above anyway....

EDIT: Also, IIRC Ruan had the same mods as mine (just 11mm'd and a cheeky gov mod) and that just made 170+hp atf with just a bigger turbo...and the headgasket had gone!.... I don't think that had had any 'fine tuning' either...