In two new threads (
1.9L VW/Audi/Skoda/SEAT Diesel Mod alert! 
and
Diesel mods and testing) there is quite a bit of discussion about how to put more air into the cylinders of a turbodiesel (better intake ducting) and whether or not this causes more fuel to be used.
Tampering with airflow meters, air pressure sensors, and variable turbine geometry is another way to "fool" the ECU into packing more air. So is this a good route to go down? Also, if I fool the ECU into thinking the (post-turbine) air pressure is lower than in reality, then will it change the turbine's geometry to compensate? Will the (pre-turbine) air flow meter's readings be used to confirm the air pressure sensors signal, so should that be tampered with, too?
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e·co·mod·ding: the art of turning vehicles into what they should be
What matters is
where you're going, not
how fast.
"... we humans tend to screw up everything that's good enough as it is...or everything that we're attracted to, we love to go and defile it." - Chris Cornell
[Old] Piwoslaw's Peugeot 307sw modding thread