Post by
eazye2000 »
https://forums.nicoclub.com/eazye2000-u30064.html
Mon Oct 26, 2009 10:39 am
On KA24DE's and SR20DE's, maybe a few other ECU's, there are two parts that the ECU looks at for information.The first part is the stock 'chip'. I have no idea where it's at, or what it looks like.The second part is the 40 pin header that has nothing attached to it. This is where you solder a connector that allows you to plug in a circuit board. You then plug chips into that circuit board, or 'daughter board'.
When you solder in the daughterboard with the chips, you must de-solder, and re-solder a jumper on the ECU to tell the ECU to stop looking at the stock tune, and to now look at your new tune on the daughterboard.
The chips you plug into the daughterboard, are burned with the many types of burners out there. Mine and a few others, use the Willem burner for the SST27SF512 chips. You load the 'tune' into the burner software, and burn the chips. You then plug the chips into the daughterboard in the ECU.
Your 'tune' that you burn into the chips, is modifiable by Tuner Pro RT. That's what I use personally. You open the tune in Tuner pro, modify it, then save it. Put it into the willem burner, and burn your chips. Then plug the chips into your ECU.
This way is very time consuming, and is not modifiable 'on the fly'. You cannot hook a USB or anything into your ECU to let you modify the tune. The only thing you can do, is datalog with a consult cable.
I'm at work trying to describe this as well as I can, as fast as I can. Dig around on the net about tuning. It's a little confusing, but can be understood after a little bit of reading. AIM me at EazyE4You if you wanna chat about it.And there are a few people out there to make the daughterboards. You can pick up any daughterboard, get the matching chips, and a burner to burn the chips and you are in business. Tuning, or modifying the 'tune' is a whole nother egg.