Car Chemistry

Jayster Header Mufflers. Here are the results from Richard in North Carolina.
1932 Ford Roadster with small block Chevy ---430 horsepower, equipped with Sanderson Jayster Headers.
Decibel readings ---
With Sanderson muffler reading inside car was 90.
With Carchemistry muffler model LH350QC reading inside car was 85-86.
With LH350QC and stainless steel + fiberglass packing reading inside car was 81.
Thank you very much for all your help.

Drone Be Gone. CC Inserts have been very effective in reducing or eliminating exhaust drone.
This from Justin: "We recently finished installing a 3rz engine into an older Toyota pick up. Part of the build included an LCE header and 2 1/2 inch exhaust with a high flow cat and flowmaster muffler. Unfortunately I ended up with a very high pitched raspy sound around 3800 rpms. Not at all what I was hoping for. After installing the 2 disc insert, I now have a very throaty even pitched exhaust tone at all rpm levels. Very happy with the results."
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