PowerBox VP37 Diesel Chiptuning Performance Module Tuningchip for VW Volkswagen Polo 1.9 TDI 66 KW / 90 PS / 285 NM - more power less fuel
The PowerBox VP works by modifying the electronic signals that control fuel pressure produced by the VP37 pump in order to optimize engine performance. The PowerBox VP increases fuel pressure at the pump to compensate for lost pressure as fuel is distributed to each injector. The increased pressure enables injectors to respond faster during acceleration. While actual injection pressure is not increased, the pressure required to activate injectors is readily maintained.