hello everyone!
18 year old here with a 1999 Japan spec SPI mini.
I’m wanting to build a speeduino and put it into my car so I can teach myself how to tune a car and later on have more options and flexibility with mods.
The car is completely stock right now and my idea would be to wire the speeduino with the same connectors as the stock ecu so it could go back to stock if needed. Similar to the SC Delta 400.
My question is if this is something that would even work? and if would it be worth it?
I’ve been researching for weeks and think I have a pretty good understanding of everything. I’m just not sure if the speeduino would work with the stock sensors, injector, loom, etc.
Thanks!
Felix

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