Hs anyone tried a JSPEC ECU?
10-01-2003, 01:54 PM
#1
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Hs anyone tried a JSPEC ECU?
Seems to me from reading here, that the US Ecu is detuned for emissions reasons.
How hard would it be to get a Jspec ECU, or perhaps just the Prom? (I don't know much about Auto ECU's but am a computer engineer). Do they use replacable or flashable Proms in these Ecu's.
Otherwise, swapping out the ECU can't be that hard can it?
How hard would it be to get a Jspec ECU, or perhaps just the Prom? (I don't know much about Auto ECU's but am a computer engineer). Do they use replacable or flashable Proms in these Ecu's.
Otherwise, swapping out the ECU can't be that hard can it?
Last edited by Reeko; 10-01-2003 at 02:02 PM.
10-01-2003, 08:03 PM
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i dont know a whole bunch about the proms etc.... but i know that in japan the fuel ratings are different.....they have 100+ octane....we dont
so that would be the main problem in getting a japanese ECU is that the fuel maps would be different etc...
andrew
so that would be the main problem in getting a japanese ECU is that the fuel maps would be different etc...
andrew
10-02-2003, 08:09 AM
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Originally posted by panda
i dont know a whole bunch about the proms etc.... but i know that in japan the fuel ratings are different.....they have 100+ octane....we dont
so that would be the main problem in getting a japanese ECU is that the fuel maps would be different etc...
andrew
i dont know a whole bunch about the proms etc.... but i know that in japan the fuel ratings are different.....they have 100+ octane....we dont
so that would be the main problem in getting a japanese ECU is that the fuel maps would be different etc...
andrew
10-02-2003, 08:37 AM
#5
Not gona happen, aparently.
You cant get hold of a JDM ECU unless you take one out of a wrote off rx-8 in japan.
All the ECU's are physicaly the same, and are reporgramed by the local service center and swaped for the faulty one.
Riping and reporgramming the code is gona be difficult too.
Just be happy with the car as it is, or get mods for it, CAI and exauhsts n stuff should give good returns.
You cant get hold of a JDM ECU unless you take one out of a wrote off rx-8 in japan.
All the ECU's are physicaly the same, and are reporgramed by the local service center and swaped for the faulty one.
Riping and reporgramming the code is gona be difficult too.
Just be happy with the car as it is, or get mods for it, CAI and exauhsts n stuff should give good returns.
10-02-2003, 08:46 AM
#6
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Originally posted by Dugless
Hey Reeko, I would like to put a Flux Capacitor in my 8, could you give me a hand?
Hey Reeko, I would like to put a Flux Capacitor in my 8, could you give me a hand?
10-03-2003, 02:50 PM
#8
Prodigal Wankler
Originally posted by RobDickinson
Riping and reporgramming the code is gona be difficult too.
Riping and reporgramming the code is gona be difficult too.
Obtaining the firmware is the hard part. Reverse-engineering it from a JDM ECU is gonna take someone a lot of time and effort. Perhaps the simplest solution is to wait for Mazda Japan to produce a reflash for the JDM's to fix some little niggle, and arrange for someone to intercept or duplicate it and send it over the pond.
10-03-2003, 02:55 PM
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Originally posted by eccles
Perhaps the simplest solution is to wait for Mazda Japan to produce a reflash for the JDM's to fix some little niggle, and arrange for someone to intercept or duplicate it and send it over the pond.
Perhaps the simplest solution is to wait for Mazda Japan to produce a reflash for the JDM's to fix some little niggle, and arrange for someone to intercept or duplicate it and send it over the pond.
Good morning eccles, your mission, should you choose to accept it...
:p hahaha....
10-04-2003, 12:07 PM
#11
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I just managed to order 2 of the Japanese ECUs for the RX-8 6MT, with the GT package ( This is the model sold in Japan as RX-8 Type S)
They should be here next week.
What will have to be done to use them:
1) Install in car ( at dealer location, see below for why!)
2) A local dealer will have to program new ignition keys to match the code in the ECU.
Otherwise the immobilizer will not let you start the car.
Cost is around $900 for the ECU.
Key Re-programming cost - see your dealer
I will be installing and trying one in my car.
Anyone game for one if it works?
They should be here next week.
What will have to be done to use them:
1) Install in car ( at dealer location, see below for why!)
2) A local dealer will have to program new ignition keys to match the code in the ECU.
Otherwise the immobilizer will not let you start the car.
Cost is around $900 for the ECU.
Key Re-programming cost - see your dealer
I will be installing and trying one in my car.
Anyone game for one if it works?
10-04-2003, 12:39 PM
#12
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$900 is a lot, but I'm interested... How about a re-flash trade-in option? pay the $900, get the new JDM flashed ECU, send back the old ECU, and get a 500-600 $ credit..
btw, Canzoomer, are you talking CDN$ or US$?
btw, Canzoomer, are you talking CDN$ or US$?
10-04-2003, 01:49 PM
#13
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Originally posted by OverLOAD
$900 is a lot, but I'm interested... How about a re-flash trade-in option? pay the $900, get the new JDM flashed ECU, send back the old ECU, and get a 500-600 $ credit..
btw, Canzoomer, are you talking CDN$ or US$?
$900 is a lot, but I'm interested... How about a re-flash trade-in option? pay the $900, get the new JDM flashed ECU, send back the old ECU, and get a 500-600 $ credit..
btw, Canzoomer, are you talking CDN$ or US$?
I am talking 87,780 Yen, plus about $40 Fedex cost to get here.
So, $791 US plus Fedex equals $840
Add some courier cost to ship to you, and local taxes, and we hit about $900 US.
10-04-2003, 01:54 PM
#14
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If this works....and done properly I can't see any reason why it wouldn't....Canzoomer will have NO problem unloading the other J-spec ECU.
Last edited by Gyro; 10-06-2003 at 12:21 AM.
10-24-2003, 05:59 PM
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Originally posted by canzoomer
Anyone game for one if it works?
Anyone game for one if it works?
10-24-2003, 06:41 PM
#18
Forum Vendor
Originally posted by tpryor
IF it works, I'll take the other one (or a future one, if I'm not first in line). Please let me know.
IF it works, I'll take the other one (or a future one, if I'm not first in line). Please let me know.
It DOES work. Both are spoken for right now, but I will order more on request. Currently about a 2 week back-order in Japan.
10-24-2003, 09:31 PM
#19
Originally posted by eccles
Blowing the code to our ECU will not be difficult if you can find a tame Mazda dealership - they all have the necessary equipment to perform flash upgrades such as was recently done for the Protege.
Obtaining the firmware is the hard part. Reverse-engineering it from a JDM ECU is gonna take someone a lot of time and effort. Perhaps the simplest solution is to wait for Mazda Japan to produce a reflash for the JDM's to fix some little niggle, and arrange for someone to intercept or duplicate it and send it over the pond.
Blowing the code to our ECU will not be difficult if you can find a tame Mazda dealership - they all have the necessary equipment to perform flash upgrades such as was recently done for the Protege.
Obtaining the firmware is the hard part. Reverse-engineering it from a JDM ECU is gonna take someone a lot of time and effort. Perhaps the simplest solution is to wait for Mazda Japan to produce a reflash for the JDM's to fix some little niggle, and arrange for someone to intercept or duplicate it and send it over the pond.
Actually I think it's time for a law suit. I believe a suit was filed a long time ago and it was decided that Cali could have more restrictive emmisions than the feds, the feds didn't occupy the field. But now that Cali standards are the defacto standard, there's additional issues to raise.
11-15-2004, 10:29 PM
#21
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My question to Canzoomer is the same....Why can't you now take the fuel maps from the J-spec and load them into a CZ1 unit? or at least reproduce the map?......even if there are multiple maps....just take the best ***read most power*** and use that one??? By you ordering these I though that is what you would be doing....taking the j-spec map and putting it into a CZ1:D
11-16-2004, 12:31 AM
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There is no EVAP pump control on a Japan PCM, so you may have a MIL showing when you connect it to a car with a pump.
Also, Japanese fuel is higher quality on average, so they can tune the engine a little higher.
Emissions standards are the main reason for the power difference though, and I know from experience none of you guys care about emissions!
But it will only work as a Japan spec if you tell it that it is a Japan spec, you need AS BUILT DATA from a Japan spec vehicle! How are you planning on getting around that, Canzoomer? Ya got me interested...
Also, Japanese fuel is higher quality on average, so they can tune the engine a little higher.
Emissions standards are the main reason for the power difference though, and I know from experience none of you guys care about emissions!
But it will only work as a Japan spec if you tell it that it is a Japan spec, you need AS BUILT DATA from a Japan spec vehicle! How are you planning on getting around that, Canzoomer? Ya got me interested...
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