Hi Ferruccio,

for my Aston Martin Vantage I tested more than 5 exhausts (RSC, Velocity, 3 differents Quicksilver) each with a gain or loss differently (with a dyno before / after). I just ordered a Capristo, I will receive all soon, we'll see!

For the Gallardo, I have the same analysis as you, the only two air boxes that really brings power, are tecnocraft and GruppeM.

For the exhaust, I hesitate between three companies. Two out of three agree to pay me if I do not have the advertised power, it's really okay to them. I'm still trying to convince the third.