Megabyte
Pro
Posts: 1047
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posted March 22, 2005 09:43 AM
ECU Mod
Besides $200 and the cost of remapping, are there any other reasons not to do this mod?
The mod allows a ZX12 to rev another 560 rpm...This allows you to rev
heigher during gear changes...thus keeping the bike in its best power. It will
lean out the air/fuel about 5%...you can add fuel to the PC map....or remap it for
best performance.
Thanks,
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fish_antlers
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posted March 22, 2005 10:23 AM
can you give some more details about "the mod" (5 w's?)
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MadMike
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posted March 22, 2005 10:59 PM
Hey fish if you do a search on the subject you will find all of the info. 
or you can go here
http://www.bikeland.org/board/viewthread.php?FID=13&TID=16055&set_time=
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fish_antlers
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posted March 23, 2005 09:57 AM
Thanks Mike... seems like iit may be a bit of extra trouble for not...
New ignition advance module for the PC USB offers ignition advance and a few more features...
from DJ's website:
quote:
"In addition, it features 'Rev E-tend'. The rev limit of the engine can now be increased without the need to make any modifications to the bikes' ECU."
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MadMike
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posted March 23, 2005 11:30 AM
yea the mod really is just to increase the rev limit by 500 or so. it helps keep the on edge people out of limiter and bouncing valves....
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krexken
Zone Head
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posted March 24, 2005 04:47 AM
I wouldn't recommend this mod to any of my customers unless they didn't mind shortening the lifespan of their engine. I doubt there are a lot of 12s out their that really need to buzzed that high. I'm not sure I buy the valve float/rpm limiter problem. Just my opinion, of course.
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bossman12r
Zone Head
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posted March 24, 2005 06:41 AM
Muzzy ran the Prostock motor to 14000 rpms with stock crank and rods.
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johnnycheese
Pro
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posted March 24, 2005 06:55 AM
quote:
Thanks Mike... seems like iit may be a bit of extra trouble for not...
New ignition advance module for the PC USB offers ignition advance and a few more features...
from DJ's website:
quote:
"In addition, it features 'Rev E-tend'. The rev limit of the engine can now be increased without the need to make any modifications to the bikes' ECU."
first March now 4-6 more weeks right try 6 months knowing those slow ass techs
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TurboBlew
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posted March 27, 2005 08:26 AM
I can tell you it makes a difference...even on my stocker
Dont see how this could damage the engine unless you bounced off the limited at 12,200rpms for an extended period of time..weakening the valve springs.
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entropy
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posted March 27, 2005 08:48 AM
i don't know why it is bad, but hitting the limiter seems to be linked with bad ju-ju on my motor. 
with the modded ecu I will set my shift light at 11.4 or so.
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krexken
Zone Head
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posted March 28, 2005 08:31 PM
quote:
Dont see how this could damage the engine unless you bounced off the limited at 12,200rpms for an extended period of time..weakening the valve springs.
Then why not raise it 13K? Or 14? The point I'm getting at is anytime you sling a larger, more powerful than stock motor much more rpm, you can expect a shorter engine life. Unless your cam timing is optimized for it, you're really not benefitting much either. Yeah I know Muzzy spun theirs to 14 grand but that motor didn't have to live long and most people here would like their motors to last almost indefinitely
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ZXLNT
Needs a job
Kawpuke Extraordinare
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posted March 28, 2005 10:54 PM
Maybe the ECU mod he doesn't isn't able to raise the redline any higher. That would be my first guess..
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johnnycheese
Pro
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posted March 29, 2005 05:58 AM
yep you are limited as to how high you can go,different ecu different limit.
example the old 16 bit busas 800 rpm the 32 bit 600 rpm.
this is why I said in the other post about it depends on how they are doing it ,it might not work with other compoets.
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TurboBlew
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posted March 29, 2005 07:12 PM
You're correct Ken.. but I figured for $200 its not a bad thing to have a few more RPMs.
I havent got back to Kevin's dyno to see if this is beneficial yet. I can tell you from "riding" the bike that it does make a little difference.
I do have baseline #s before the mod and this is just Step 1 in a series of steps I will be taking real soon. Just havent finished the experiment. Been raining abunch and Ive been working even more.
quote:
Then why not raise it 13K? Or 14? The point I'm getting at is anytime you sling a larger, more powerful than stock motor much more rpm, you can expect a shorter engine life. Unless your cam timing is optimized for it, you're really not benefitting much either. Yeah I know Muzzy spun theirs to 14 grand but that motor didn't have to live long and most people here would like their motors to last almost indefinitely
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kcadby
Pro
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posted April 02, 2005 12:34 PM
It works...
I ran Steve's ZX12 today on the dyno...
Even @ 12,200+ there is NO drop in HP yet...
STOCK motors can use it IMHO 
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TurboBlew
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posted April 03, 2005 04:20 AM
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Megabyte
Pro
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posted April 15, 2005 11:27 AM
Received my ECM last Friday. It works great. I mathematically added 5% gas w/my PCiiir, and my bike actually seems faster, and smoother. BTW, It took a week by UPS to get back there, and only a day to be back on my doorstep by US postal "Snail Mail". The shipping costs were the same. Go figure. Anyway, I 'm a happy camper just wondering how much faster I'll be able to go in 6th gear. The calculator says another 10 mph or so My stock 12 & 168 rwhp did a verified 194 mph @ the rev limiter. My stroker with 212 rwhp should be faster.....
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TurboBlew
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posted April 15, 2005 01:19 PM
Give us some results!
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BA
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posted April 16, 2005 02:22 PM
Hey TB, did you do a 5% mapping increase across the board, or is that 2nd dyno session just from plugging it into place? Shame the A/F isn't on that graph!
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TurboBLew
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posted April 16, 2005 05:59 PM
No BA.. I just plugged mine in and went about my business. No PC or fuel controller on the bike right now and it has a Akrapovic pipe.
A/F was kinda flat and looked good overall. Bike was no where close to lean at all...even in the extended area...matter of fact it was abit rich.
Dean has been riding it and has gone ~145mph in the 1/4 short shifting the bike. Once I get some time I will try to make some more passes on the bike.
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