Backfire with Graves Exhaust - ZX6R Forum
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Old 10-21-2014, 01:40 PM Thread Starter
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Backfire with Graves Exhaust

Just put on my graves and noticed there is a lot of "after fire"/"back fire" when riding. Mostly on low rpms and when downshifting. I read a few threads about this and there seems to be no consent or a straight answer if I should worry about this?
Blockers? Retune stock computer? Get a new pc? Leave it?
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Old 10-21-2014, 01:58 PM
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Block off playes. Pcm. Tune. Done

At least it's not a 2007-2008
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Old 10-21-2014, 02:08 PM
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Originally Posted by danielson View Post
Just put on my graves and noticed there is a lot of "after fire"/"back fire" when riding. Mostly on low rpms and when downshifting. I read a few threads about this and there seems to be no consent or a straight answer if I should worry about this?
Blockers? Retune stock computer? Get a new pc? Leave it?
I have a Graves slip-on on my bike and for what it's worth, when letting off the throttle it does "crackle" a bit but not really back firing. It's a pretty free flowing system but I honestly wouldn't worry too much about it.

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Old 10-21-2014, 02:11 PM
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If it's just a slip on then do the block off plates and it should kill the popping/afterfire on decal. And might as well remove ALL the smog shit at that point too.

If it's a full system and you haven't added a fuel management system to the mix then make that happen.
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Old 10-21-2014, 02:34 PM
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No need for pc,tune if your runnin slipon... Get some blockoff plates that get rid of noise you hear.
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Old 10-21-2014, 03:00 PM
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Yeah block off plates will.fix that quick.
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Old 10-21-2014, 03:08 PM
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block off plates and a tune will remove most of the backfiring. i also have a graves slip on + gutted headers.

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Old 10-22-2014, 08:05 AM
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What they said, Graves and Driven make nice block off plates too.
PowerGroove likes this.

Aubs
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Old 10-22-2014, 10:10 AM
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Sounds like everyone said pretty much what I was gonna say.

Keep it alive with the Graves and get their block-off plates. If the problem still persist, get a PCV or a Bazzaz and richin it up.

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Old 10-22-2014, 10:21 AM
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Quote:
Originally Posted by danielson View Post
Just put on my graves and noticed there is a lot of "after fire"/"back fire" when riding. Mostly on low rpms and when downshifting. I read a few threads about this and there seems to be no consent or a straight answer if I should worry about this?
Blockers? Retune stock computer? Get a new pc? Leave it?
Consensus?

Bleeding heart liberal

You do what you can for as long as you can, and when you finally can't, you do the next best thing. You back up but you don't give up.- Chuck Yeager

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Originally Posted by Fishbowl
Go ride Badger for it's the only thing that'll make sense at times.
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Old 10-22-2014, 11:18 AM
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This is one of the main differences between slip-on vs. full system. Installing a full system necessitates also installing block off plates and either getting a dyno tune or ecu flash or installing a fuel controller. Without all of this your air/fuel mixture will be way off and your bike won't run right.

Basically you just opened up a money pit for yourself by installing that full system =P
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Old 10-22-2014, 01:30 PM Thread Starter
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Quote:
Originally Posted by badgerninja View Post
Consensus?
Yea, thanks

Quote:
Originally Posted by weaponzero View Post
This is one of the main differences between slip-on vs. full system. Installing a full system necessitates also installing block off plates and either getting a dyno tune or ecu flash or installing a fuel controller. Without all of this your air/fuel mixture will be way off and your bike won't run right.

Basically you just opened up a money pit for yourself by installing that full system =P
Slip on
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Old 10-22-2014, 01:59 PM
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I love the sound it makes when it backfires, kind of miss it. But I do hear it once in a while and brings a smile...

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Old 10-22-2014, 03:51 PM
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Backfiring is normal without a PCV or some form of tuner but backfiring sounds cool. It's nothing bad really. It's just fuel igniting inside the exhaust on its way out.
 
 

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