Quote:
Originally Posted by pacaveli420
I pulled the rubber grommet out, as well. If you do this, 881290 from Lowe's (in the hardware aisle with all the bolts) will make a snug fit into the hole. It's a 1" cap like these from Amazon:
https://smile.amazon.com/dp/B007Q94BMQ/
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I have wondered about doing this too. With just the tube plugged, engine compartment noise is still transmitted to the firewall. By disconnecting the tube/grommet, did you notice a reduction in cabin noise?