I didn't get a chance to reset the ECU, but something that's been bugging me is that codes 25 & 26 are supposed to be for California cars only. The california cars came with a sub-oxygen sensor and an egr gas temp sensor also (which is why I'm wondering if blocking the egr may have something to do with this). I will try to find a new plug and reset the ecu tomorrow. Thanks again.
BTW, could code 51 be because a jdm engine was installed (don't know if it came off an auto, my car is a 5sp)
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