4" Intake Resonator Pipe for the Factory (VGT) Turbo on 2020-2024 L5P 6.6L Duramax equipped Chevrolet Silverado or GMC Sierra 2500 / 3500 HD truck.
Replaces the following GM Part Numbers: 84841229, 84841225, 84262962,
***Will only fit with the OEM air filter box, NOT COMPATIBLE with the S&B, Banks, AFE, or other aftermarket air intakes***
Reviewed by: Zachary06/17/2020 08:12PM
Product ownership: Less than 1 week
Purchased from: Wehrli Custom Fabrication - WCFab
Ordered the intake resonator for my 2020 Duramax hoping to get some turbo whistle like I did on my LLY. Not much for turbo whistle, but a little extra engine noise in the cab. I was really surprised by the throttle response improvement! Totally unexpected, and welcome. This will not make your 2020 L5P noticeably louder, and will not change your exhaust note. It will, however, improve throttle response, and it really pops under the hood! Super easy install, 20 minutes maybe. I had to use one of the factory clamps for the connection to the airbox as the 4.25" clamps provided did not fit over that end. Buy it, install it, be happy! Thanks Wehrli Custom!
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