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Page: 1
Created on: 03/01/12 09:27 PM
Replies: 7
oldfool
Joined: 03/01/12
Posts: 51
back firing through muffler
03/01/12 9:27 PM
I just bought a zx14 with a muzzy muffler when I let off the gas it backfires trough the muffler also occasionally I smell raw gas but find no leaks. This is a 2006 with 6000 miles should I be worried about the backfiring or is this normal for after market mufflers.
Thanks for any help
bean07
Location: South Ozz
Joined: 08/02/10
Posts: 3181
RE: back firing through muffler
03/01/12 10:37 PM
I had that with my 04 CBR1100xx & my ZX14 aswell till It was recomended & fitted a PC3 & PCV by my Dyno man,"He" said it will run rich with out a ECU upgrade I know this is so for before 2009 year bikes. 
oldfool
Joined: 03/01/12
Posts: 51
RE: back firing through muffler
03/02/12 6:59 AM
I am a very good shade tree mechanic but am very old school you know carbs and no computers. I have read up on somethings on the PC3 and understand almost none of it. So first question is it going to hurt to ride the bike until I scrape up more money or could it harm the motor. Second question can the dealer or a good mechanic reset the ecu on the bike now and which would likely be cheaper. Thank you for your reply bean07
SnuffyZX
Location: New York City
Joined: 03/16/09
Posts: 1080
RE: back firing through muffler
03/02/12 10:54 AM
First Off Welcome to the Forum!!!
Try Posting this in the main section not sure who else stops in to meet the new guys.
That sounds like the decel pop I used to get when I let off the throttle after nailing it on my 07!!!
I think but I'm not 100% sure but check with the Rook on this site I think he has a remedy which consists of using a wooden dowl to block off a air hose that goes to the air box.
Snuffy 
* Last updated by: SnuffyZX on 3/2/2012 @ 11:05 AM *
DogoZX
Location:
Joined: 02/26/09
Posts: 2889
RE: back firing through muffler
03/02/12 11:32 AM
First, 
Second,
TRE-006A - $60.00
2006 & up ZX-14
Requires sub-throttle plate removal & special mapping.
Gets rid of fuel shut-off on decell -
This will allow smooth on/off throttle transitions and will get rid of the annoying pop when the throttle is reapplied.
Gets rid of part throttle timing retarder in lower gears.
Our maps are only available with a minimum purchase of $200.00 or more.
^^^CLICK^^^ 
COOTER
Location:
Joined: 04/27/11
Posts: 1342
oldfool
Joined: 03/01/12
Posts: 51
RE: back firing through muffler
03/04/12 8:58 AM
Hi and thanks for the greetings. Some things have changed. It seems that the bike has muzzy headers and exhaust and has the PC3 control ans I will find out today what kind of filter it has (stock or other). So I need to study up on the power command and then get advise about what I don't understand. Thanks for the advise and I restart this thread in the main section.
GTR27
Joined: 11/20/15
Posts: 10
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