For everyone with the oval T/B that has that little extra whistle noise. That noise is not a good thing. It was posted on here not long ago that the noise was due to improperly alignment of the T/B. After match porting my T/B to the honed intake the noise suddenly dissappeared. There is a big difference in the size of the exit of the T/B and the entrance of the intake. The intake is smaller and needs to be opened up. Take the time to match these ports. Might just be some free horsepower hidden in there.