Gotta have clean fuel! The one in the car came with the shell (that as over 200k miles). No idea if it was the factory original one, but it at least had 60k miles in my ownership, so I figured it was time to swap it.
1. Not as accurate
2. Not as applicable to a broad range (chips are different for every Subaru)
3. ECU still sees a speed signal and messing with that with a chip messes (albeit most likely without issue) with the signal the ECU sees.
4. Not as cool or fun to do
And I don't think it's possible to brick. Worst case the EEPROM bricks and I get another for like 30 cents and flash it with already saved ROM.
Few new lovely pieces in... let's see how long it takes to piss off my roommate by clogging up our living room table.
What you see here is:
-Wavetek 187 Waveform generator, complete with ghetto "coax" cables.
-Garbage can oscilloscope from Ford cera 1998
-Chinese 20V power supply overnighted from Ebay. Chinesium cutting edge cables included.
Just need to add in my oldschool computer with a 9 pin serial and eeprom burner to complete the setup.