I finally had a chance to get underneath my termi. I got her about 2 weeks ago and I'm trying to figure out what mods were done from the previous owner. I found out that she has a bassani o/r xpipe, flowmasters, aluminium FRPP driveshaft.I also have a K&N air filter. Could any of you guys give me an idea if that will boost my HP over the factory 390 HP?