OK, so I need some help deciphering a PCV map
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Stellar HDF Member
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From: Western Canada
OK, so I need some help deciphering a PCV map
and comparing it to the one already programmed in. I sort of understand the #'s and what the ones with the minus symbols mean in the 'cylinder' table but on the ignition portion I see on one map nothing but 8's all the way through the 100% throttle setting. What do these #'s denote in the ignition table?
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From: N. Atlanta Burbs
and comparing it to the one already programmed in. I sort of understand the #'s and what the ones with the minus symbols mean in the 'cylinder' table but on the ignition portion I see on one map nothing but 8's all the way through the 100% throttle setting. What do these #'s denote in the ignition table?
The 8 in the ignition area means your timing has been advanced 8*. If it were -8 it would mean there would be a -8* retard.
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Stellar HDF Member
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From: Western Canada
Thanks Mr Wizard
Trying to get a handle on the data inside these maps is somewhat confusing but at the same time almost understandable. The map on my bike right now for instance has +3 all through the idle column for fuel. Not sure why the throttle at idle would need to be rich. Ideally I would like to avoid another dyno run since they seem to be so hard on the bike, and it's rear tire specifically.
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From: Land of the black buggy
+8 seems like a lot, mine is only advanced 3 at 80% throttle and 4 at 100%, all above 2500rpms.
The numbers in the fuel map represent % of change (8 would mean 8% more fuel)
The numbers in the timing map represent degrees of advance/retard (8 would mean 8 additional degrees of advance)
All numbers modify the stock map, so if your stock program has 25 degrees of timing and your PCV shows 8, you're going to have 33 degrees total.
The numbers in the fuel map represent % of change (8 would mean 8% more fuel)
The numbers in the timing map represent degrees of advance/retard (8 would mean 8 additional degrees of advance)
All numbers modify the stock map, so if your stock program has 25 degrees of timing and your PCV shows 8, you're going to have 33 degrees total.
Last edited by Earl IV; Aug 31, 2010 at 04:31 AM.
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From: N. Atlanta Burbs
Does +8 (advance) at full throttle seem normal to you through the entire rpm range?
Trying to get a handle on the data inside these maps is somewhat confusing but at the same time almost understandable. The map on my bike right now for instance has +3 all through the idle column for fuel. Not sure why the throttle at idle would need to be rich. Ideally I would like to avoid another dyno run since they seem to be so hard on the bike, and it's rear tire specifically.
Trying to get a handle on the data inside these maps is somewhat confusing but at the same time almost understandable. The map on my bike right now for instance has +3 all through the idle column for fuel. Not sure why the throttle at idle would need to be rich. Ideally I would like to avoid another dyno run since they seem to be so hard on the bike, and it's rear tire specifically.
A dyno is hard on a motor and other components and yes, you are right, a new tire won't be new anymore after a day on the dyno. There are other options to tune the PCIII. You can borrow a friends TTS and do a data run to see your timing retards during a full pull or street riding then change the PCIII settings. The TTS can't flash a map to your bike but it will register data runs on another bike other than the one it is married to.
Was this calibration installed on your PCIII by a tuner by using a dyno for another bike? I understand you are comparing two calibrations but from where and to what?
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Stellar HDF Member
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From: Western Canada
Thanks Mr Wizard
8 degrees seems like a lot especially in the 100% throttle range. If I were to see a map like that I would think someone just slapped a number in there and hopped like hell it didn't break anything.
A dyno is hard on a motor and other components and yes, you are right, a new tire won't be new anymore after a day on the dyno. There are other options to tune the PCIII. You can borrow a friends TTS and do a data run to see your timing retards during a full pull or street riding then change the PCIII settings. The TTS can't flash a map to your bike but it will register data runs on another bike other than the one it is married to.
Was this calibration installed on your PCIII by a tuner by using a dyno for another bike? I understand you are comparing two calibrations but from where and to what?
A dyno is hard on a motor and other components and yes, you are right, a new tire won't be new anymore after a day on the dyno. There are other options to tune the PCIII. You can borrow a friends TTS and do a data run to see your timing retards during a full pull or street riding then change the PCIII settings. The TTS can't flash a map to your bike but it will register data runs on another bike other than the one it is married to.
Was this calibration installed on your PCIII by a tuner by using a dyno for another bike? I understand you are comparing two calibrations but from where and to what?
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From: Western Canada
A terrible screen cap.
0% 2% 5% 10% 15% 20% 40% 60% 80 100%
1750rpm 0 0 0 0 0 0 0 0 0 0
2000rpm 2 0 0 0 0 0 0 0 0 0
2250rpm 10 0 0 0 0 0 0 0 0 0
2500rpm 8 4 4 6 0 -15 0 0 0 0
2750rpm 14 6 7 4 6 -12 0 0 0 0
3000rpm 14 9 12 11 11 3 0 0 0 0
3250rpm 14 12 9 10 10 9 -11 -9 -1 -1
3500rpm 14 4 7 8 15 12 -8 -9 -1 -1
3750rpm 6 4 11 12 14 16 -8 -2 -1 1
4000rpm 6 4 9 12 12 13 -8 -1 0 1
4250rpm 6 4 9 8 9 10 -8 -2 0 0
4500rpm 6 4 14 9 9 11 -2 -2 0 0
4750rpm 6 4 9 9 6 10 3 -2 0 -2
5000rpm 6 4 4 0 0 6 -8 -2 0 -2
5250rpm 6 4 4 0 0 6 0 0 0 -1
5500rpm 12 10 10 0 0 6 0 0 0 -1
5750rpm 12 10 10 0 0 6 0 0 0 0
7000rpm 12 10 10 0 0 0 0 0 0 1
7250rpm 12 10 10 0 0 0 0 0 0 1
Well, it's a little jumbled but for those of you familiar with the PCV maps you'll see what this one is like. Any thoughts?
1750rpm 0 0 0 0 0 0 0 0 0 0
2000rpm 2 0 0 0 0 0 0 0 0 0
2250rpm 10 0 0 0 0 0 0 0 0 0
2500rpm 8 4 4 6 0 -15 0 0 0 0
2750rpm 14 6 7 4 6 -12 0 0 0 0
3000rpm 14 9 12 11 11 3 0 0 0 0
3250rpm 14 12 9 10 10 9 -11 -9 -1 -1
3500rpm 14 4 7 8 15 12 -8 -9 -1 -1
3750rpm 6 4 11 12 14 16 -8 -2 -1 1
4000rpm 6 4 9 12 12 13 -8 -1 0 1
4250rpm 6 4 9 8 9 10 -8 -2 0 0
4500rpm 6 4 14 9 9 11 -2 -2 0 0
4750rpm 6 4 9 9 6 10 3 -2 0 -2
5000rpm 6 4 4 0 0 6 -8 -2 0 -2
5250rpm 6 4 4 0 0 6 0 0 0 -1
5500rpm 12 10 10 0 0 6 0 0 0 -1
5750rpm 12 10 10 0 0 6 0 0 0 0
7000rpm 12 10 10 0 0 0 0 0 0 1
7250rpm 12 10 10 0 0 0 0 0 0 1
Well, it's a little jumbled but for those of you familiar with the PCV maps you'll see what this one is like. Any thoughts?
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From: Land of the black buggy
Idle would be 1000 rpms & 0% throttle.
Above that, with 0% throttle it's modifying the amount of lean-out as you coast down in gear.
Does your display show 0% throttle at idle?
If not, you need to calibrate the TPS to the PCV.
Mine was idling rich, I then discovered the TPS was reading 2% at idle.
Above that, with 0% throttle it's modifying the amount of lean-out as you coast down in gear.
Does your display show 0% throttle at idle?
If not, you need to calibrate the TPS to the PCV.
Mine was idling rich, I then discovered the TPS was reading 2% at idle.
Last edited by Earl IV; Sep 1, 2010 at 06:02 AM.
Thread Starter
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Stellar HDF Member
Joined: Dec 2009
Posts: 2,035
Likes: 8
From: Western Canada
What is the TPS?
Idle would be 1000 rpms & 0% throttle.
Above that, with 0% throttle it's modifying the amount of lean-out as you coast down in gear.
Does your display show 0% throttle at idle?
If not, you need to calibrate the TPS to the PCV.
Mine was idling rich, I then discovered the TPS was reading 2% at idle.
Above that, with 0% throttle it's modifying the amount of lean-out as you coast down in gear.
Does your display show 0% throttle at idle?
If not, you need to calibrate the TPS to the PCV.
Mine was idling rich, I then discovered the TPS was reading 2% at idle.