Unfortunately, there is still very little available for the 11+ tdi's.
you can get a 40ish bump in power 60lb ft, from a tune, malone tuning, revo
there are NO benifits to doing a cai and exhaust, other than looks and a little sound
seriously, maybe 12 hp after both mods and tuning
The best money spent is going to be tuning the DSG
HPS OR HPA, cant remember exactly, but there are tunes avail for the dsg
Be very discerning when choosing, there is one company endorsed w/audi to tune the dsg
i was just about to start playing with mine when we bought the dmax
other than suspension mods( H&R sport cup kit, and adjustable sway bars, 20mm spacers) the golf above is stock
this car will carry some corner speed
i am still going to wait to tune the ecm for a while, @ 38,000 miles the car is still new, and i could care less about a few ponies when i am getting 48mpg hwy
the dsg tune tho, to get the gears to shift quicker, now that is enticing.