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93' LS
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Can someone post high quality pics of type II ecu's, and even a chip maker and model number... i want to make an EPROM reader/burner and try to make copies of the legend ecu or other ecu chips that can be used in our car's ie the stage 1 and 2 chips. I know this can be done, i just need to figure out what chips are actually used.
 

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Wow ... I actually had the same idea. I can grab a picture of the stock Acura ECU (Type II, 6-speed) and post it in a few days. That would rock if we could actually read the parameters the Bayou fiddles with, and maybe even build an adjustable controller.
 

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93' LS
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Discussion Starter · #3 ·
Making an EPROM reader doesn't seem to be that hard, if we can find out what chip it actually uses we won't have to buy ecu's from a junk yard we can just buy the chips and make copies and do whatever... pretty much everything we need to copy them to the computer and write them back is on the net due to rom copying...ie nes. i figure this will be a fun project
 

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LEGEND
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you guys are GENIUSES! lol, many i never knew we could just copy chips like that, lol, sure beats paying Bayou $300! Let me know how it goes! i'm def interested :)
 
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I'm in to help. Let us know what kind of support we can give. I am pretty good with electronics but don't live on the east coast. Anyways, this would be very very cool.
 

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well what we'd need is the model of EPROM chip used in the legend ECU's (hence the high quality pictures to be able to read the alphanumeric code off the EPROM chip). i have an eprom burner and have flashed eproms before but i dont know what kind legends use. the number of pins that it uses would help out alot! i just emailed bayou asking them... but i doubt they will respond.

i could dump a stage 2 chip into a file and flash other chips with it, thus giving a stage 2 chip for about $2, instead of $300 that bayou charges. of course id need a few things, the biggest being a $300 stage 2 chip to test out. the only problem is if the stage 2 chips have copy protection on them, but i can mess around with it and try and copy it. i guess i can first try and copy a regular ecu, just in case something happens id only be out $50 instead of $300. of course the stage 2 chip to be copied would have to be a working one... which, seeing bayous reputation, might be a little hard to come accross.

what bayou does (most likely) is just re-flash the whole chip, with the adjusted parameters. meaning they completely erase the chip, the reflash it with the original data + modified changes. so, in theory, i could just dump all the data off the chip and use it to flash others.

if someone was to supply me with a stage 2 chip id be willing to copy it and sell stage 2 chips at cost, meaning $2+shipping. we gotta keep this quiet so bayou doesnt find out.

if you want more information email me: [email protected]

-brandon
 

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well the only thing stopping me from checking my ecu is this... id have to take out the back seats, which i kinda dont want to do.

SpeedDemon: can you do some research and find out what kinda chips are used? call up dealerships, junkyards, mechanics, anyone who might know. im sure the same chip is used for all legends, its just the programming thats different.

imo... spending $300 on a stage 2 chip that'll yeild (from what ive heard) an extra ~10hp isnt worth it! $300 for 10hp? i dont think so.


-brandon
 

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0000$$$$0000####0000
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Darkstar said:
well the only thing stopping me from checking my ecu is this... id have to take out the back seats, which i kinda dont want to do.

SpeedDemon: can you do some research and find out what kinda chips are used? call up dealerships, junkyards, mechanics, anyone who might know. im sure the same chip is used for all legends, its just the programming thats different.

imo... spending $300 on a stage 2 chip that'll yeild (from what ive heard) an extra ~10hp isnt worth it! $300 for 10hp? i dont think so.

-brandon
Lucky for you then that the Legend ECU is not located in the back seat, but up front on the passanger footwell near the firewall. No seat removal is needed :)

Also, I read above that people thought that Bayou just reflashes the original chip; however, they actually supply a new chip and send your original back to you as well.

Anyway, I really hope you guys figure this out and it workds. I'm sorry I can't be of any help, as I really don't know much about buring chips.
 

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You might want to check out hondata's website. They commented on how tough the honda ecu's are to crack into. If you are doing a straight copy of the stage II chip you might also run into legal issues...good luck on creating a cheaper mod fo the Legend world!
 

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ChrisK said:


Lucky for you then that the Legend ECU is not located in the back seat, but up front on the passanger footwell near the firewall. No seat removal is needed :)

Also, I read above that people thought that Bayou just reflashes the original chip; however, they actually supply a new chip and send your original back to you as well.

Anyway, I really hope you guys figure this out and it workds. I'm sorry I can't be of any help, as I really don't know much about buring chips.
are you sure? i have a 1993 sedan and in the Chilton book it says that its located right behind the back seat, and i can confirm that it IS there. i know on some other models its under the seat/footwell but mines behind the seat.

also if all they do is give you a new chip then why do they need the WHOLE ecu? im sure its to give you the *right* stage 2 chip. my big question is this: does the stage 2 chip retain all the original features of the original? i.e. the ecu codes, ive read on hondata is that so called "racing chips" dont include the original programming, so errors cannot be detected without putting the original chip back in and reading the codes. the racing chip doesnt include the programming to display the codes.

LiasLegend said:


Would any of this information be listed in a helm manual?
it might be, do you have the Helms manual? if so would you wanna look in it for me? this chip number should start with 27xxxxx

LegendC said:


You might want to check out hondata's website. They commented on how tough the honda ecu's are to crack into. If you are doing a straight copy of the stage II chip you might also run into legal issues...good luck on creating a cheaper mod fo the Legend world!
from my understanding of bayou they just bought the code from Dinan, they didnt do any of the actual coding. i know it would be illegal.... so ill just keep it to myself.

i think ill just buy the stage 2 chip, go through all the hassle if it doesnt work, and in the end try and copy it. also i may or may not sell it, if i DO run into legal isssues (which i probably will) then i wont sell it.

-brandon
 

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... or if you guys were really dedicated, you could just buy a standalone EMS and tune it on a dyno, and adjust for climate, altitude, your car's parameters, etc... and get it done right the first time... maybe I'm just too dedicated, but I'll spend $1300 and 100+ hours on a standalone EMS before I'll go hacking a stock ECU and guessing what kind of horsepower it'll make...
 

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well my idea doesnt include ANY hacking of the original ECU... if you read the whole thread youll understand what im proposing.
 

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$300 for a chip does seem to be a bit extreme dont it?

Even if you sold these things for $50, you'd be doing all of us a big favor. Of course, to prevent issues, i'd thoroughly test it out and make sure you're good on that point.

-Jose
 

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jose3030 said:
$300 for a chip does seem to be a bit extreme dont it?

Even if you sold these things for $50, you'd be doing all of us a big favor. Of course, to prevent issues, i'd thoroughly test it out and make sure you're good on that point.

-Jose
yes it does! the reason im not going to sell it for $50 is because id be making a profit off of it, if i sell it for what it costs me to make it ($2+shipping) then i wont be profitting off of someone else's product (and in court this might be a good thing). honestly in the end itll benefit me.... i dont have to pay $300 for a somewhat useless chip, id only have spent time on it.

right now actually coping a stage 2 chip is a long way off, no ones offered it to me (and i doubt anyone will). so the best i can do right now is study the original ECU. i dont wanna end up like bayou... having an untested product for sale for $300 and then charging alot of people to fix THERE mistakes, so id DEFINATELY thoroughly test it before i *sell* it.

-brandon
 

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Darkstar said:


yes it does! the reason im not going to sell it for $50 is because id be making a profit off of it, if i sell it for what it costs me to make it ($2+shipping) then i wont be profitting off of someone else's product (and in court this might be a good thing). honestly in the end itll benefit me.... i dont have to pay $300 for a somewhat useless chip, id only have spent time on it.

right now actually coping a stage 2 chip is a long way off, no ones offered it to me (and i doubt anyone will). so the best i can do right now is study the original ECU. i dont wanna end up like bayou... having an untested product for sale for $300 and then charging alot of people to fix THERE mistakes, so id DEFINATELY thoroughly test it before i *sell* it.

-brandon
Hey man, you're a God.
By the way, you see the names on this post. If you find something out, do everyone a favor and do it privately, that way, there's no way of tracking (due to any legal issues that may arise), but people MUST understand, this MAY or MAY NOT work well on your car. But $300 is still a whole hell of a lot of $$$ for just a reprogrammed ECU. Man, that's like buying a new PC because you wanted a faster processor.
 
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