Question – Can chip be wired to remote location instead of inserting on socket?
Some questions that we receive are posted here, in case it can help others that may need the same information.
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Question
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Dear auto-motivo,
can you provide me with the shipping tracking number when available, and i was also wonder if it would be possible to not solder the socket directly to the ecu motherboard but rather solder wires to each pin hole after original IC is removed and connect those wires to the socket that is located in a easier to access location like say in the bottom of the center console for easier chip changing or would the resistance of that length of wire interfere with the chip.
94 – 95 Honda Accord EX 2.2L Performance Chip P0A ECU
- JoEllen
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Answer
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Hello JoEllen.
I apologize for the delay. We had a technical problem when preparing your item last Friday and it was the last one. Fortunately, we are receiving new merchandise on Monday, so your item will be shipped then. Again, I apologize for this, as we currently ship the same day.
About your technical question, if the chip is wired from any remote location, other than mounted on the socket on the board, the resistance offered by the wires is not to be worried about, but for the possible electronic noise being picked up by the wiring as if it were 28 separate antennas (28-pins). Electronic noise may lock the ecu or make it behave erratically.
If you wish to do so, you should use parallel wiring, like the one used for the hard disk or CD-ROM data connection (IDE), making two separated harnesses of 14 pins each one, plus, it must be shielded and the shielding must be connected to ground on the ecu. For example, heavy aluminum foil can be neatly rapped around each of the two resulting harnesses, and then, both must be securely (flawlessly) connected to ground.
On the other hand, if your idea is to switch between “Stock” and “Power” chips, or just two different chips, a dual chip would do the job better and you will be able to choose between programs with the flip of a switch. This will only work if it is going to be chosen between two programs only. If it is to be switched among more than two programs, this approach won’t work.
For this you will need a dual chip which is, a double capacity chip with two programs accommodated on it. For example, your ecu uses a chip of 32K, and a dual chip will have a capacity of 64K, making room for two programs. Then it will be a matter of switching the higher memory address bit between ground and +Vcc to choose which one of the programs to activate.
You will find more details in the link below. If you are interested, and the programs are “stock” and “power”, I can send you the dual chip, where the default program is the power one, that will be active in case you finally decide not to do the wiring for the dual chip, which really is very easy and will need much less effort than wiring the whole chip (it is explained in details in the link at the end of this message (our blog).
The only thing with a dual chip in Honda cars, is that in most cases, the engine has to be turned off, flip the switch and then start the engine again so the changes take place. Flipping the switch with the engine on, will do no harm, but the program might not switch.
Just let me know.
Best regards,
Richard
Technical Info:
http://qcwo.com/technicaldomain/?p=129
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yep, i did that and it was a complete mess until i shielded the wires. thanks bro!
I’m glad to help. Remember to securely connect to ground the shielding and maintain wire length to a minimum.
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