What gains did the Dbilas give Z?
i dont really rate the dbilias as an intake.
one of the biggest thing about an intake is filter surface area. the dbilias has tiny panel style filter where it attaches to the front slam panel, restrict the amount of ontop of that the heat shield has slot styled words"dbilias" on it, meaning the heat can pass through easier, pretty much negating the whole idea of the heat shield.
add to this the non standard size internal MAF diameter-essential to correct fueling and AFR etc(some people have used a sleeve inside to correct this)
plus its quite heavy, and feels like its made of iron or something.
worse of al it sounds like darth vader lol.
my personal choie of filter would be
ITG
Twintake
Evoms
BSH true seal
HKS
VF engineering
I helped Mike TFSI replace his Dbilias intake with the ITG, and his car didnt feel as quick at first as his car needed to adapt to the amount of extra air entering the engine once adapted and his AFR was running as it shoud he believes it to be stronger than previous dbilias output.
that said the dbilias will still be alot better than stock