Testimonials - Sound Suppressors

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Sound Suppressors

Printed From: Brock's Performance
Category: Testimonials
Forum Name: Testimonials
Forum Description: Brocks Performance Customers Speak Out
URL: https://forums.brocksperformance.com/forum_posts.asp?TID=2316
Printed Date: October/10/2024 at 3:49pm
Software Version: Web Wiz Forums 12.01 - http://www.webwizforums.com

Topic: Sound Suppressors

Posted By: Wheeldown
Subject: Sound Suppressors
Date Posted: July/09/2012 at 1:20pm

How many db's do the mid pipe sound suppressors for a dual system decrease and how much power, (HP and TQ) loss occurs?

Replies:

Posted By: Wheeldown
Date Posted: July/09/2012 at 1:23pm

Sorry should have asked this in the

Q&A section. Please move if required. Thanks

Posted By: Brock
Date Posted: July/11/2012 at 9:47am

Wheeldown,

While your question sounds easy and strightforward... it's actually very complicated and would take a small novel to answer in detail, because all sound testing falls into the IF/THEN scenario: bike type (power level)/engine size (number of cylinders)/pipe config (dual vs. single), rpm limit... it's a mess.

Here is a recent reply I posted in another forum in regard to ZX-14R CT Dual Quiet Core Muffler testing ONLY (all other bikes will have different readings):

Our ZX-14R CT Dual at an idle is 90 dBA and 105 dBA at 5000 rpm.... with our Quiet Core mufflers it's 88 dBA at and idle and 100 dBA at 5000 rpm.

The AMA suggested SAE J2825 standard for a 4 cylinder is 92 dBA at and idle and 100 dBA at 5000 rpm or 75% of redline (whichever is less/ SET rpm test method)

We can just pass the above, which is no easy task, and only drop 1-2 RWHP in the procces... an almost impossible task these days.

Does that help?

Brock

Posted By: Wheeldown
Date Posted: September/14/2012 at 12:25pm

Very much so...thanks