I am currently experiencing a boost "lag" when I hit about 11-12 lbs. of boost and the vehicle bogs down but the engine and tranny rev smooth. All help would be greatly appreciated. My car is a 1996 850R Auto with dp, race cat, sport exhaust, cone air filter and some suspension mods. Also to note I replaced my oem fuel filter with a Mann instead of a Bosch. Anybody heard of this problem with the Mann fuel filters. I already threw away the old one, so I can't see if this would resolve the problem.