very sorry to bring up an old thread on such a limited product... bet no ones even gonna repond.. but does anyone have CONFIRMED gains on a dynod IS250 with Mazurri headers??? i saw his dyno was about +20hp +30tq to wheels. can anyone confirm these with their own dyno (preferably not butt dyno). also interedted on the Sound difference.. anyone with experience with Mazurri headers on IS250 please contact me
thank you all
parsa