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Hi every one, I am a first time buyer of a SUBARU with a twist. I live in Mexico where the brand has a very weak presence and support. English is not my first language so I ask that you bear with me and help me correcting any grammar and/or spelling that needs to be pointed out. I got the Forester used, with about 80k miles, and as soon as I got it, I changed the timing belt and a sensor (not sure which one but it corrected a missfiring problem. Doing so was really a challange down here, parts are not readily available and thus getting them takes forever. Nevertheless the car runs great, it has now 120k miles and If your were to ask me before the smog check down here it could have gone another 200k with no issues. But... It did not pass the smog check, @ NOX.... 159 HC...... 328 (apperantly this here should be 100 or less) CO....0.7 CO2....12.4 Co+Co2.... 13.13 O2..... 2.5 LAMDA.... 0.0 @ NOX.... 1000 HC...... 100 CO....0.60 CO2....00.0 Co+Co2.... 16.00 O2..... 0.6 LAMDA.... 0.0 @1000 NOX.... 428 HC...... 99 CO....0.9 CO2....14.1 Co+Co2.... 15.01 O2..... 0.3 LAMDA.... 0.0 RPM @ 716 2518 I am wondering if these readings maen anything to any one out there, please advise if these make any sense for a 4CY Engine.