mrbrenan
official vendor
You can definitely hear a whistle, it almost sounds like an STI turbo but not as loud. I also have mine hooked with the Magnaflow exhaust (which I installed before) so it's getting a bit more throaty from that. It is more of a "Whisp" than a whistle. It's very subtle. But after dropping in the intake, the sound is much deeper with the Magnaflow. But, not as deep as a pair of Flowmasters would be.
All in all, I think the TRD intake is an awesome addition. Also, since the pictures are not pulling from photo bucket in the first post, here is our full step by step install (TRD Intake Install 4Runner). Also the Magnaflow install: Magnaflow Install 5th Gen Runner
All in all, I think the TRD intake is an awesome addition. Also, since the pictures are not pulling from photo bucket in the first post, here is our full step by step install (TRD Intake Install 4Runner). Also the Magnaflow install: Magnaflow Install 5th Gen Runner