I just bought the Hard Krome 3" Big Straights, very happy with the look. Very disapointed in the sound. I installed the Cobra Fi2000 Fuel Injector thing, and tuned it as best i could. The sound is way too high, not low and deep like i expected. Is there anything i can do to make the sound deeper??? I have tried it with baffles, and also with out. Please help. Thanks......