all tuned and running now

[hybrid_H]

last week, my oem ecu crapped out. just found out today from the electirician that the ecu is fryed. im going to try put a SOHC Vtec ecu in even though my engine is SOHC Non-Vtec.

just wanted to know, what is the likelyhood of an OEM ECU frying with a Greddy Emanage piggyback?

imquite puzzled myself im thinking along the lines of the emanage not being wired up properly, but im not an electirician, so i can only speculate.

some feedback from people who are familiar with ecu would help heaps! before i start pointing fingers.

[Horny_Devil]

it can happen as all the components only have a finite life time, it could be as simple as a dry joint somewhere or a blowen capcator or open circuited reisistor. or it could have burnt a track or something.

adding something like the Emanage would certianly increase the risk of this happening as its changing the voltages/currents that the ECU will normally see (even if its only a tiny bit) this degrades components quicker aswell. could only tell u by having a look at it

i wouldnt think this would happen to often with a car ECU as they are designed pretty robustly.

how do u plan on running the car on a VTEC ECU? its gonna run a check light and probably run in limp mode

[d16a7]

ive got a d16a7 obd1 ecu here... US Spec board too so dunno if its easier to chip or what...

[chuckles2]

it happens, how bad is the ECU? might be fixable.

Ive seen ECUs that have literialy caught on FIRE!!!!!!

[Horny_Devil]

Originally Posted by d16a7

ive got a d16a7 obd1 ecu here... US Spec board too so dunno if its easier to chip or what...

the easiest to chip :wink:

[hybrid_H]

Originally Posted by Horny_Devil

it can happen as all the components only have a finite life time, it could be as simple as a dry joint somewhere or a blowen capcator or open circuited reisistor. or it could have burnt a track or something.

adding something like the Emanage would certianly increase the risk of this happening as its changing the voltages/currents that the ECU will normally see (even if its only a tiny bit) this degrades components quicker aswell. could only tell u by having a look at it

i wouldnt think this would happen to often with a car ECU as they are designed pretty robustly.

how do u plan on running the car on a VTEC ECU? its gonna run a check light and probably run in limp mode

yeh thats what the electrician said, the check light will run, what do u mean by "limp mode" ?

he said it might be possible to run the map somehow to make it think its got vtec, didnt talk in too much detail about it, going to see him tomorrow.

im just thinking, greddy would of put alot of thought into the computer to mate it to a OEM ECU so that it wouldnt cause any overheating etc to casue it to fry

my other thought is, that the emanage wasnt installed correctly

[hybrid_H]

Originally Posted by chuckles2

it happens, how bad is the ECU? might be fixable.

Ive seen ECUs that have literialy caught on FIRE!!!!!!

he said it may be fixable, but is hard to get to and very small to work with.

[Horny_Devil]

still doesnt matter if greedy put thought into it or not the stock ecu is designed for a stock motor with stock sensors and thats it, change it in any way and u reduse the life of the ECU, how much noone can tell u that.

it could be fixable but how hard it will be depends on the size of the case and whats wrong with it

i dont think ull be able to run the car properly on the VTEC ecu, limp mode means it runs on a seperate map and will only let u rev to about 3000rpm not good at all

[chuckles2]

im not 100% sure but greddy emanage beign a piggy back it probably affects signal inputs WITHIN the factory perameters and changes outputs aswell. therefore it shouldnt effect its life at all. But its not unusual for a honda ECU to burn out, its not common but it does happen.

[hybrid_H]

Horny_Devil, point taken, unles he can change the map looks like il definatley need to find a non vtec ecu.

Chuckles2, i keep thinkin the same thing that the inputs woud be within the factory parameters but like i said im no electrician.

[Horny_Devil]

Originally Posted by chuckles2

im not 100% sure but greddy emanage beign a piggy back it probably affects signal inputs WITHIN the factory perameters and changes outputs aswell. therefore it shouldnt effect its life at all. But its not unusual for a honda ECU to burn out, its not common but it does happen.

jase, i dont quiet think u understand how reliablilty works in components :wink: but its all good

every component has a reliability factor, which is a % add 2 in series and u multiply them by one another, the greedy emanage is in series with the ecu so u have added all those extra components in series hence lowering the reliability of the stock ECU. may not seem like it but its the way it works in the world of electronics. and why do i know this? i work with electronics and weapons

simple fact u alter any of the inputs or add anything to the stock ECU (hondata included) it will reduse the life of the ECU

[hybrid_H]

instaled a new d16y ECU yesterday, the vtec one had different plugs etc.

cars running fine now, the electrician said the injectors may have put a bit too much load on the fuel part of the ecu, hence it frying, so theyve istalled a resistor to take some of the load off :thumbsup:

idles running a bit rough, but will take a while to burn off the extra fuel that leaked out into the manifold and head he said.

[tarmac-]

ha no it wont.

idles abit ruff probly becuase its the wrong ecu, and the fact he wired in resistors. shouldnt even need to touch it unless your running different impedence injectors (maybe you are?)

[d16a7]

LOL how does fuel leak out intothe manifold unless he was meaning you cranked it over heaps of times and injectors were still firing.. if so check the plugs..

^^^^ that is true

my car doesnt idle.. never has.. cam timing is retarded but that is a good thing at the moment for safety's sake

[hybrid_H]

Originally Posted by d16a7

LOL how does fuel leak out intothe manifold unless he was meaning you cranked it over heaps of times and injectors were still firing.. if so check the plugs..

^^^^ that is true

my car doesnt idle.. never has.. cam timing is retarded but that is a good thing at the moment for safety's sake

hats exactly what happened though, when the ecu fryed, it kept firing the injectors at full load into the chamber, when we would try to jump start it etc.

only after me and ronnie disconnected the computer distributor etc and saw that the injectors were stil firing that we knew it was a electrical problem.

tarmac - the ecu is correct, as i got it from strongs and its the same model number etc as my previous ecu. all i know about the injectors is that they are 390cc.

[Coupe-R]

Ive seen ECUs that have literialy caught on FIRE!!!!!!

This happens when you are running different injectors with the incorrect resistor pack.

Resistor packs will the load on the ECU but also change how the injectors fire also. So changing from one resistor pack to another will actually change voltage seen.
Go to hondata.com and watch the ECU blow up from too much load on the components.

Iv seen ECU's blow for other reasons but usually its something else in the system that caused the failure. Not the ECU itself.

So you are saying you had NO RESISTOR pack before!! What car is this?
No bloody wonder the ECU blew up!!

[mr.sky]

Dude your injectors are definitely the issue here. 390cc most likely a mitsi GSR. They are low impedance and will fry your ecu without resistor packs.

Have you got your emanage hooked back up? Car will run super rich with stock ecu and big injectors.

[d16a7]

Originally Posted by Coupe-R

This happens when you are running different injectors with the incorrect resistor pack.

Resistor packs will the load on the ECU but also change how the injectors fire also. So changing from one resistor pack to another will actually change voltage seen.
Go to hondata.com and watch the ECU blow up from too much load on the components.

Iv seen ECU's blow for other reasons but usually its something else in the system that caused the failure. Not the ECU itself.

So you are saying you had NO RESISTOR pack before!! What car is this?
No bloody wonder the ECU blew up!!

Ahh makes me feel glad that i *cough* wayne spent all that time soldering the resistor box in....

[hybrid_H]

i dont know whether they put in the resistors when the ecu was first installed most likely not as it wouldnt have fryed if they did.

im running emanage blue on a stock d16y4. it does run a bit rich, as the ecu will only let u put in fuel and not take it out, ulike the emaage ultimate.

i may upgrade to a emanage ultimate or hondata to get a perfect tune.

[turbozxi]

Originally Posted by hybrid_H

i dont know whether they put in the resistors when the ecu was first installed most likely not as it wouldnt have fryed if they did.

im running emanage blue on a stock d16y4. it does run a bit rich, as the ecu will only let u put in fuel and not take it out, ulike the emaage ultimate.

i may upgrade to a emanage ultimate or hondata to get a perfect tune.

Go hondata, Greddys customer service can lick my salty balls.

[hybrid_H]

Originally Posted by turbozxi

Go hondata, Greddys customer service can lick my salty balls.

haha is it that bad?

are u still using the ultimate?

[turbozxi]

Originally Posted by hybrid_H

haha is it that bad?

are u still using the ultimate?

When I get it back I hope to, its on the way back haven't seen the ecu in more then 3months I am not sure they have even fixed it from the last email I got... Talking to Soichi at ST-Hitec he says the emanage just changes the settings by itself over time. He says he can't sell this product to his customers. They were asking him to test it out, on reflection it was perhaps my ecu. Go hondata if it is an option and you can find a legit tuner.

[Coupe-R]

Or screw the piggy backs and mod your stock ECU, then you will have a REAL tune

[d16a7]

Originally Posted by Coupe-R

Or screw the piggy backs and mod your stock ECU, then you will have a REAL tune

crome is fun spooling the turbo at launch control hehe 8)

[turbozxi]

Originally Posted by d16a7

crome is fun spooling the turbo at launch control hehe 8)

Done that getting a decent tuner = not so fun.