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Muzzy exhaust and PC3 fuel map

This is a discussion on Muzzy exhaust and PC3 fuel map within the ZX-12R forums, part of the Kawasaki Motorcycles category; I recently picked up a 2000 ZX12R. It came with a Muzzy titanium pipe and a Power Commander (serial port model). The bike suffers from ...


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Old 07-21-2010, 12:50 PM   #1
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From: OregAn
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Muzzy exhaust and PC3 fuel map

I recently picked up a 2000 ZX12R. It came with a Muzzy titanium pipe and a Power Commander (serial port model). The bike suffers from serious fueling issues below 3000rpm. PO said it has a base map on there. I read about similar issues from long ago, most threads were inconclusive and a lot linked back to ZX12R.org

Obviously each bike is different and should be custom tuned but let me describe the how bad it is; taking off from a stop, light throttle, as the revs climb over 2500rpm and bike lurches forward as if I grabbed a handful of throttle. It literally feels like the bike goes from 20lb-ft to 50lb-ft in 500rpm span(2500-3000). Has anybody been successful in tuning this out?
   
 
Old 07-21-2010, 01:52 PM   #2
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I Ride: '04 Ninja ZX12R Galaxy Silver
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I can truly say not one has completely remove that flat spot, some have learned to live with it or moved on with another brand exhaust......my conclusion is when Muzzy designed their exhaust they only have one thing in mind, RACING Not for daily cruising (traffic riding), straightly rev it up and zoom

You can find maps from few folks from this Forum.....tweak them to what will work for you if you know what you are doing if not find someone in your area that knows and willing to play with it for your bike....then get use to it or find yourself a another brand of exhaust.....those are the only choices you have I am sure you don't want to hear that....
   
 
Old 07-21-2010, 02:04 PM   #3
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From: canada
Joined: Mar 2010

I Ride: 2000 kawasaki zx9r

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Quote:
I recently picked up a 2000 ZX12R. It came with a Muzzy titanium pipe and a Power Commander (serial port model). The bike suffers from serious fueling issues below 3000rpm. PO said it has a base map on there. I read about similar issues from long ago, most threads were inconclusive and a lot linked back to ZX12R.org

Obviously each bike is different and should be custom tuned but let me describe the how bad it is; taking off from a stop, light throttle, as the revs climb over 2500rpm and bike lurches forward as if I grabbed a handful of throttle. It literally feels like the bike goes from 20lb-ft to 50lb-ft in 500rpm span(2500-3000). Has anybody been successful in tuning this out?
...had the same problem with my muzzy. Had Kzscott install a map and all is well. Maybe you can send him a pm, or eventually he will respond on this thread.
   
 
Old 07-21-2010, 02:07 PM   #4
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I am also using map that I got from KZScott which I had Jeff Z. tweaked it a bit more and using it.......flat spot is not completely gone but nothing like what it was so I can live with it....

PM KZScott for the map....
   
 
Old 07-21-2010, 03:03 PM   #5
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I Ride: 2000 ZX12R
I Race: 2000 ZX12R

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i have the same issue. i just deal with it. looking on trading the bike in soon
   
 
Old 07-21-2010, 03:14 PM   #6
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Quote:
i have the same issue. i just deal with it. looking on trading the bike in soon
...i hope you are not trading your bike in because of it. It can be fixed with a power commander.
   
 
Old 07-21-2010, 04:05 PM   #7
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From: Springfield, IL
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I also have a 2000 zx12 w / muzzy Ti end can. I got my bike with a custom map and have tweaked a few things with it and can honestly say i don't notice any flat spot what so ever. I also have k&n filters and i had to do the kleen air / crank case mod, you don't have to do the mods unless you like extreamly loud exhaust backfiring everytime you roll off the throttle. I have the old serial PC3 let me know if you would like to try my map and i can walk you though any steps needed to get your bike running with it.
   
 
Old 07-21-2010, 04:33 PM   #8
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From: OregAn
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Quote:
I also have a 2000 zx12 w / muzzy Ti end can. I got my bike with a custom map and have tweaked a few things with it and can honestly say i don't notice any flat spot what so ever. I also have k&n filters and i had to do the kleen air / crank case mod, you don't have to do the mods unless you like extreamly loud exhaust backfiring everytime you roll off the throttle. I have the old serial PC3 let me know if you would like to try my map and i can walk you though any steps needed to get your bike running with it.
I'd love to try it. I also have the serial port PC3 on the bike.
   
 
Old 07-21-2010, 04:59 PM   #9
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From: Indianapolis, IN
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I Ride: ZX12r or anything the customers drop off.
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Quote:
I also have a 2000 zx12 w / muzzy Ti end can. I got my bike with a custom map and have tweaked a few things with it and can honestly say i don't notice any flat spot what so ever. I also have k&n filters and i had to do the kleen air / crank case mod, you don't have to do the mods unless you like extreamly loud exhaust backfiring everytime you roll off the throttle. I have the old serial PC3 let me know if you would like to try my map and i can walk you though any steps needed to get your bike running with it.
You have a slip on only, problem does not apply to you.

Its a problem for people with full Muzzy exhausts.

To the OP
All I can say is the A1 has the most tempermental injection system ever.
I have mine tuned several times a year.

We switched to a USB Power commander with 250RPM tuning increments and it helped. Also, sync your throttle bodies.

The A1 takes precise throttle control to ride correctly at slow speeds.

You shouldnt be spending much time under 3000 RPM anyways, but certain occasions such as low speed limits in 1st gear it may be necessary.

Now I could give you copies of mutiple maps Ive used, but it won't do any better than anyone elses. I've been there done that. Even let someone try to dyno tune it and they failed.

Wasn't until I found the guy I use now for tuning that we finally hit success. The dyno is only as good as the guy using it.
   
 
Old 07-21-2010, 05:26 PM   #10
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From: OregAn
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Posts: 23
Just tried the official Muzzy map from Dynojet, no improvement in the low end. It removes a lot of fuel @ 2000 rpm but I feel the problem is there at 1500 as well, probably at 1000. So any working map needs to address that RPM range as well. Still looking...
   
 
Old 07-21-2010, 05:29 PM   #11
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replied to your pm
   
 
Old 07-21-2010, 06:04 PM   #12
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From: OregAn
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Thanks Scott! I moved the PC3 to the trunk just for this occasion!
   
 
Old 07-21-2010, 06:10 PM   #13
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Quote:
replied to your pm
...i knew it wouldn't take long for you to chime in Scott. Made plans to drive up to the races but unfortuately got side tracked. What was your fastest time?
   
 
Old 07-21-2010, 07:02 PM   #14
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From: Springfield, IL
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PM sent
   
 
Old 07-21-2010, 08:20 PM   #15
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From: OregAn
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Played around with a Dynojet map for Muzzy, removed a lot of fuel (-10) from 500, 1000 and 1500 rpm increments. It is definitely much better now, it starts booking at 2000 rpm even in 4th gear. Need to fine tune it but removing fuel has helped. I'm worried about running too lean so not sure if I'm going to keep these settings. I'll keep playing some more.
   
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