After market exhaust decibal (db) ratings

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#31

04-29-2013 | 10:57 PM

MaximusPrime

Senior Member

Joined: Mar 2012

Posts: 1,264

From: WMNF, NH, USA

1st Gear Member

Dennis Kirk

#32

05-01-2013 | 10:11 AM

zippets

Senior Member

Joined: Apr 2013

Posts: 216

From: S.E Michigan

1st Gear Member

Quote:

Originally Posted by zippets

2012 klx250s
Just over the weekend i had my bike inspected (total stock) 76db @ 4000 Rpms no load 20 inches away from the pipe.
this coming week i'll be installing the FmF Q4 with the denise kirt quiet insert I'll report back and let you know the findings

Update installed
mega boom header
FmF Q4
FmF Quiet Insert
DJ 128 jet
shorter spring
opened slide to .113"
cut screen out of air box
twin air filter
snorkle taken off
emissions taken off

So after all of that i can now with just throttle pull my front wheel off the ground
alot better low end tork

and the db rating was 10db over stock with this set up
it was tested at 86db

Note: on the Q4 muffler it states no more the 96db

when i started it up it didn't sound like it had after market exhaust

the air box is louder then the pipe

https://www.denniskirk.com/fmf/power...prd/435531.sku

I had to bend the end of the screen over a bit

i tossed the insert back in that the Q4 came with and tested that and it was alot louder 94db on my meter

I hope this helps

Last edited by zippets; 05-03-2013 at 12:46 AM.