I posted earlier that a whistling sound occured when I installed a 75 mm Accufab throttle body and 75 Dragon plenum. I thought that the sound was coming from the tb but it has turned out to be from the plenum. When I complained to Dragon Performance Parts, they responded with an e-mail acknowledging that the whistling was common and that it was caused by the divider in the lower plenum. If you don't want an annoying sound coming from your engine, you may want to purchase an Accufab or C & L plenum.
Whistle actually in Dragon Plenum
- Thread starter 01mgvert
- Start date
Thats what I alluded to earlier in a different plenum post. Stick with the Accufab TB and plenum for best results. The cheaper ones whistle, and drive you nuts. You can hear the whistle over the radio even. Then you find yourself listening for it all the time!!!! The shops around here wont stock anything else but Accufab because of all the returns!!! The cheaper ones are unfinished on the inside like yours, and the air velocity over the rough inner surface causes unruly whistleing.
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