I know this is an old thread and Im not really a big import tuner guy but after doing some online research and buying the Gen2 Turbonator, I have this to say to anyone looking into it.
On a modded 04 5.7 Hemi with 327whp the Turbonator bumped me up to a whopping 329hp (Dyno tested @ Extreme Motorsports). Im unsure what the claims of 7-15% increase are based on but in my oppinion for $280 its a pos mod. Buy a TBS and take the gf out somewhere nice, better performance results and you get laid.

Im posting on a few google found forums dealing with this mod as a warning to save some people money.
But to get a little moneys worth of mine I swapped out the clynder casing for translucent red piping, and and painted the turbine blades red with the beloved black swirl. I put it on every so often for car meets and get some questions about it: but in the end Id say your basically paying for a neat engine dress up piece, or pure ricer mod.
p.s. I concider a "ricer" to be someone who has a wing on their car that weighs more then they do, and buy a muffler tip call it an exhaust kit. So please none of you take it as an insult Im not refering to you, imports are hot but at 20 with son on the way I like my hemi
Ill check back here in a few days to answer any questions anyone may have, but after that Ill delete the account and leave Acura forums to Acura tuners.