Review on Optimize Performance with Airaid 510-621 PowerAid Throttle Body Spacer by Justin Hill
I am neutral on this item
Installed on Tunrda 2010 5.7 liter. The spacer moved the air intake higher and I ended up trimming the engine cover to fit properly. The whistle is annoying, to say the least. But if you hear a whistle, you'll be reminded to slow down to save miles (so that's a plus?). I get an average of 14.7mpg, but I got that before installing it.
- Sturdy construction
- Some defects
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