I picked up a Sprint Booster version II with the Mode button off ebay for $150. This thing makes the car feel the way it should of came from the factory. It does take the lag out and if you have a steptronic the tranny downshifts alot easier to pass. Well worth the money.
Build Thread <:> S54 Vanos Thread
-TTFS Engine/SMG Tune- SGT Headers/Sect 1/SCZA- Evolve Eventuri- Sprint Booster V2-
-UltraGauge- Orion V4's- CF Lip/Console/Diffuser- VIS XTS CF Hood- LED Fogs- Valentine One- Turner 15F/12R Spacers-