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Re: SMOG.. . Heeeeeeelp!
Hello Jim,
Your Smallcar chip is actually an ECUtune chip. I made it. Smallcar is one of my resellers. You should not use the impreza fuel regulator with it. The tuning of the ECUtune Stage1v# is for the originial equipment fuel pressure regulator. The part number on the OE regulator is 22670AA050.
Possible/probable problems are:
1)bad catalytic converters
2)bad temp sensor (not the one that sends to the gage..the one that sends to the ecu)
3)missfire
4)leaking fuel injector/fuel injector o-ring
You probably aught to feel a missfire if that is the case.
The temp sensor is the easiest thing to check and cheapest to replace so I would start there just because wouldn't it be nice if that is it?
The temp sensor for the ECU is the one with the plastic plug and two prongs. It is on the water pipe on the top of the engine (next to the other temp sensor which runs the gage) on the driver's side. With the engine warmed up the resistance between the two terminals should drop down to below .3 or .4 Kohms. If it does not then you have a bad temp sensor.
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