Hi, I’ve found here:http://www.joerg.de/pdf/293.pdf what is supposed to bring up to 15hp more including fuel saving. Is it easy to clamp between ignition coil and distributor. My question: Who knows such a thing or knows how it works? Is there a capacitor in it? Supposedly TÜV free? Are there € 139,- ? What does a power tube (air filter box thing) bring me? Sound, PS? Price/Performance? At JörgTuning I didn’t find one for my Passat 35i with 2,0l 115hp digit. Is there certain or? What else is there to LowCost tuning? K&N (for box), power tube, power cable, cleaning of various valves? vw rules