How will OBD-II (on board diagnostics) respond to modifications?
From: patrick(mail@removed.com) “As long as the air/fuel ratio is acceptable to OBD-II then there are no problems. So as long as you give the car the additional fuel it needs w/ the nitrous then there will be absolutely no problems.” From: Ed (mail@removed.com) “A friend installed a test pipe in his 96 GS-R today, and so far no “check engine” light turning on. The test pipe has bungs welded in for the O2 sensors, and was driven for at least 2 hours.” “Since your car is a pre-OBD II vehicle, the check engine light shouldn’t turn on when installing a test pipe. In OBD II (96-on) Hondas/Acuras, the second O2 sensor is supposed to check catalytic converter efficiency by comparing its readings with the first O2 sensor (which is what you have). Now that there is no cat, does the ECU see this as an extremely efficient cat, or as a bad reading? From this “experiment”, I guess the OBD II system is compatible with a test pipe.” From: Andre Sisman (mail@removed.com) “I had my test pipe for 94 gsr
From: patrick(mail@removed.com) “As long as the air/fuel ratio is acceptable to OBD-II then there are no problems. So as long as you give the car the additional fuel it needs w/ the nitrous then there will be absolutely no problems.” From: Ed (mail@removed.com) “A friend installed a test pipe in his 96 GS-R today, and so far no “check engine” light turning on. The test pipe has bungs welded in for the O2 sensors, and was driven for at least 2 hours.” “Since your car is a pre-OBD II vehicle, the check engine light shouldn’t turn on when installing a test pipe. In OBD II (96-on) Hondas/Acuras, the second O2 sensor is supposed to check catalytic converter efficiency by comparing its readings with the first O2 sensor (which is what you have). Now that there is no cat, does the ECU see this as an extremely efficient cat, or as a bad reading? From this “experiment”, I guess the OBD II system is compatible with a test pipe.” From: Andre Sisman (mail@removed.com) “I had my test pipe for 94 gsr
