has any one ever used a piggyback system on a volvo? i want to turbo my car...but i dont want to mess with the ecu and junk like that...i know it would be easier just to buy a turbo volvo and work from there, but i love this car and cant part with it! i guess this "piggyback system" ties in with the various sensor to create more fuel and advance the timing and adjust boost and stuff like that. any help would be apreciated.