i had an idea for making my own "real time programming" it involves soldering wires, 1 to each pin hole in a po6 ecu where the socket would be soldered in for the eprom chip, and running those wires to the willem eprom burner, where the chip would sit. was wondering if this would work as rtp, whereas i would have my laptop plugged into my burner which had the chip and run the car without the chip in the actual ecu, just wiring running to the burner. would it read information off the chip, or would it read all the other ilittle circuits on the pcb of the burner...? and if i tried to read the information off the eprom the same question applies... would it read the eprom or the rest of the ecu as well as the eprom..

i know i can just buy a rom emulator but im trying to work with what i got. anyone tried this

 

Yeah I'm pretty sure it doesn't work that way. A Chip writer and a Romulator are two different things.

You would honestly want a High quality Zif socket in your P06 ecu then an ecu pin-> ribbon cable that runs to your romulator with whatever software does that...

once your done tuning you write that bin to a chip and put that in the ecu.


Rather then spend all this time and money on something slightly antiquated like this idea I would suggest you pick up a NeptuneRTP solution... HRTuning's support is quick and you would get lots of help if you posted in this forum or the Neptune specific forum.


I am slightly biased to having you pick up a NeptuneRTP board due to myself having one, although Neptune software is updated frequently and is quite easy to learn. I'm sure there are other solutions but I feel that Neptune has the best and quickest help/response turnover.


--Aaron

 

Using a burner definitely won't work. It only programs the information onto a chip, it doesn't act as a device that can deliver this information to the ECU.

And thanks for the kind words, Aaron.

 

i know it only burns the chip. if you didn't understand the way i said it, the chip is still technically attached to the computer, via cabling.. it would just update the chip- which the computer still reads from. i guess a better way of putting it would be - install the chip into the ecu, which has wires running to it from the burner so it can flash/burn the chip without removal. still doesn't make sense? im going to try it tonight and see what happens lol it was all free stuff

 

I see what your talking about..

It still wont work, the eeproms have to be out of circuit to be programmed, if you really wanted to be creative you would have to take your however many pin eeprom and put it in a circuit that shuts off all the contacts to the ecu and passes it to the eeprom burner then the ability to switch it back.

so if its 24 pins you would need 24 individual digital switches.

--Aaron

 

ah seems like the right answer. i tried it, and the burner is picking up more information than is actually on the chip when it is setup like this - as if it's reading some information from the ecu itself. i haven't tried to program while it's still in circuit, but i'm betting it wouldn't work, as several other circuits would be parallel to the eeprom, making it impossible to program as is. thanks for the idea about the digital switches, if i could design it, it would at least take out some of the time needed to tune - at least i wouldn't have to pull the chip everytime, although i would need to turn off the vehicle. thanks. any other ideas for stuff like this? i love making my own stuff..

 

i was just researching, the chip i am using is an atmel at29c256, which is a "flash" chip, and from some of the information i was reading about, are able to be programmed "in-circuit" using some special programming alogrithm... any truth to this

 

Sure, you can program it in circuit, but what will happen to the ECU? Give it a try and find out.

If you're going to run your own wires, get a test clip so it at least looks semi-decent.

 

even if you could get this to work, burning the correct info into the chip, the ECU will never tolerate you pulling it's access to the info in the chip. This drops it into safe mode and the car will run like crap. Not to mention any communication between the burner and the chip that happens to look like a response from the chip may casuse anything to go wrong inside the ECU.
Also (if you're lucky) it only comes out of safe mode if you cycle the ignition.
So to use this you'd have to shut off the car, burn the "chip", then restart the car. More than likely you'd have to power down the ECU completely...

That's IF you can make it able to be programmed in the circuit, you will likely have to run an adapter board so you can interrupt certain lines, either for communication or for power/ground manipluation.

I'm not trying to discurage you (ok maybe I am) this is the sort of thing that I enjoy doing, but you may be heading into a world where there is a lot more complications than you know...

 

To chime in again, it seems like your trying to improve on old old technology when there has already been advancements in obd1 tuning since actually having to deal with eeproms.

Neptune and Hondata .... then you get into the situation where your the "ONLY" person who can diagnose a problem with it...

Get neptune, or make your ecu zif socket easily accessible and program chips like everyone else has done it in the past..

.... I just think it might be overly complicated for just the ability to not have to pull a chip out and program it.. get a romulator or spend the extra cash and get neptune.. ITS WELL WORTH IT.

--Aaron