Hi guys.
I'm starting this new thread because I think it's a topic that will interest many of you.
The goal is to allow anyone who wants to modify their car's electronics to do so safely and confidently, without causing any problems.
Throughout this post, I'll be discussing some brands. I want to make it clear that I'm a distributor for Dimsport, but they don't pay me or give me anything for free. I'll share both the good and bad points about their company—all true, but always based on my opinion and experience from 25 years of business dealings. The same applies to the other companies I mention.
Let's begin:
The first thing we need to do is read the maps.
We have two options: via OBD or by removing the ECU, desoldering the memory chip, and reading it with a desktop programmer.
I recommend OBD; it's non-invasive, fast, and clean. Desoldering and soldering the memory chip requires skill and a suitable workspace.
Keep in mind that an ESD discharge caused by a bag of apples left by your brother-in-law on the kitchen counter where you're working can kill the ECU.
If you still decide to proceed with this method, make sure you have a decent desktop programmer and, above all, a socket!
Before touching the flash memory, mark the position of pin 1. This is always marked with a dot on the memory chip.
If not, by reading the silkscreen, pin 1 is the bottom left pin.
Also note that there are no free pins; it's a PSOP44, meaning 44 pins.
Sometimes there are 48, 50, or 52 pins, and the memory is offset. If so, mark its exact position. A picture is worth a thousand memories.
I have to pick up my daughter, we'll continue later.
Linear Mode
