mrsantafe
Zone Head
Posts: 521
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posted November 02, 2005 03:55 AM
extended ecu
Has anyone seen a performance gain on there zx12's with this mod. How much top end would it add assuming one had the hp to pull it? For example 17-48 gearing? thanks!
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9.78@155.13 mph 1.71 60 ft @ a near mile high dragstrip
2006 ZX14 gone
2006 ZX10r (Wifes street bike)
2004 zx10r (her race bike)
2002 ZX12 (still kicking a--)
2007 gsxr 1k (race bike)
  
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TurboBlew
Moderator
BUSY DOING THE SCHIAVO
Posts: 4590
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posted November 02, 2005 04:00 AM
It gave me 640 more rpms. the horsepower did not drop off. I would suspect degreeing the cams accordingly would give you additional hp or at least a few more bike lengths to shift into the next gear in dragracing.
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rac4it
Needs a job
Bergie
Posts: 3009
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posted November 02, 2005 08:10 AM
The gain is extended RPM, and more useable horsepower. I have them in both of my 12Rs now, modified by Dave Owen.
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supra5677
Pro
Posts: 1279
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posted November 02, 2005 08:30 AM
with properly degreed cams maybe 5 horsepower..
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BA
Pro
Posts: 1592
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posted November 02, 2005 04:31 PM
 Edited By: BA on 2 Nov 2005 16:35
SantaFe, I have a feeling that you will already know this, but, just for the sake of saying it....
I suspect that there would be a slight gain in drag-racing ET/MPH even if the dyno chart showed that HP stayed flat through the extra RPM.
By extending the shift point out, and having a higher rpm at the next gear, your avg HP and TQ in each gear should go up.
Now ya got me curious about how much extra top-end MPH this mod gives at a place like,......ooohhhh, Maxton. 
Who's Dave Owen?  I want this mod done too! lol!
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trenace
Needs a job
Posts: 3056
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posted November 02, 2005 04:44 PM
Edited By: trenace on 2 Nov 2005 16:45
I will be having it done also but effect in the stnading mile probably is not much I wouldn't think, as peak hp isn't extended and already the hp curve tends to be fairly flat between the point one upshifts down to, peak, and the next shift point. The big benefit of this comes where it avoids where rpm falls from the shift to a point giving well below peak hp. So that's much more important in 1-2 and 2-3 shifts, which are more important to 1/4 mile ET, than it is to speed in the standing mile. However, since acceleration is still a factor in the mile, it's not irrelevant.
However, expecting to do this and also running taller 5th and 6th will enable running 18/50 or so while being geared for 215 (excluding tire slip) and so that will make launching easier and 2nd through 4th more lively.
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mrsantafe
Zone Head
Posts: 521
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posted November 02, 2005 05:05 PM
I certainly believe it would be a very good mod to do. I was hoping someone would chime and say something like it dropped my et by a 1/10th or it gave me a mph increase in the qtr, or when racing my buddy it added x amount of bike lengths, it gave me another 4 mph on top end etc. Its definately on my to do list.
thanks fellas
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9.78@155.13 mph 1.71 60 ft @ a near mile high dragstrip
2006 ZX14 gone
2006 ZX10r (Wifes street bike)
2004 zx10r (her race bike)
2002 ZX12 (still kicking a--)
2007 gsxr 1k (race bike)
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TurboBlew
Moderator
BUSY DOING THE SCHIAVO
Posts: 4590
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posted November 02, 2005 06:05 PM
Well it is good for at least 1/10th and 1mph.
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OutsiderZX12R
Zone Head
Street Racer
Posts: 841
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posted November 03, 2005 09:23 PM
How does one go about getting this mod done to the ECM?
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OutsiderZX12R
2000 ZX12R-A1
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entropy
Moderator
Posts: 8671
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posted November 04, 2005 12:03 AM
quote:
How does one go about getting this mod done to the ECM?
call Dave Owen, 508 802 0425
(tell him entropy sent ya!)
Dave has the fastest NA bike on the planet and is a great guy. He has helped me plenty!
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This moderator uses moderation in moderation
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Outsiderzx12r
Zone Head
Street Racer
Posts: 841
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posted November 04, 2005 09:47 AM
What does it usually cost to have this done? Sounds like a good mod to do over the winter months when riding time is limited.
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OutsiderZX12R
2000 ZX12R-A1
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