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Old 01-09-2014, 12:57 AM   #1
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Default OBDII, Emissions testing and Megasquirt

Noob here. I have been reading through this forum and others and have a question.

It has been suggested to me that, when upgrading to forced induction (turbo), that I upgrade the ECU with a Megasquirt on my '96 Miata. I will update the exhaust and injectors later.

Anyway, I live in central Texas and must pass the local OBDII hookup. Is it as simple as temporarily swapping in the stock ECU, tying the waste gate open and driving a bit until the original ECU reads/sets to the sensors and then she will magically pass? I don't mind doing this annually if the wrenching part is like less than two hours.

Most posts I can find are several years old and I am looking for more recent experience from Megasquirt users.

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Old 01-09-2014, 02:58 AM   #2
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You'll need to swap injectors, toss on the maf, swap the stock ecu back on, open the wastegate, unhook the bov, if running a high flow cat expect to have to mess around with the 2nd narrowband, whatever else you do that the stock ecu doesnt like.. at last drive 100-150miles so the ecu can test the cat for efficiency or you'll get error codes and fail.
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