definitely noticiably louder in the cabin when you step on the gas. its a higher pitch sound than the same the one i had on my gmc yukon. (same kit) it must be the big difference in engine size. for me, it is not obnoxious. i do notice the truck is more responsive and pulls better. all i can say to best answer your question is that its probably going to be a higher pitch sound than your Tundra, but for me i'm okay with it because i know the engine is running more efficient and i'm getting more horses that this truck desparately needs..
good luck man
boulder, lux, chrome app and wheels, trailer, k&n intake, nitto grappler 33's
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