We ran the Intense FWI on our GT and lost .2 1/4time, we went back to open cone and ran 14.5s again... Same day after 10+runs on each setup, engine was heat soaked ALL day.
The Thrasher CAI, is the nicest product they have. As far as fit...they were designed for a 97+ GP, so may not fit right on other cars (unless they have since added model options). This is one of the only CAI none of our cars have used, but no one has ever complained about gains.
FWIW - When I first got my SSEi (about two years ago) the first mod I did was the INTENSE FWI. With that mod alone, my SSEi dyno'ed at 205whp. A typical stock 3800SC dynos ~195 whp
10whp from just a FWI-I call BS...... looks like you have no baseline to start from so that showing mis-information. I bet your car would dyno at 199whp or better before the FWI.
Hell my new (2000GP) dynoed at 203 a week ago.....BONE STOCK. I bet I'd only see 2-3whp gain from ANY intake.