14Feb2012
Miata Exhaust CEL P0420
This is a common issue we see these days with OBDII cars and aftermarket exhaust systems. Some systems are very finicky about properly sensing the airflow going through the exhaust system, that if they sense too much air at the downstream oxygen sensor, it will trigger a check engine light. This can be caused with a larger diameter exhaust, high flow catalytic converter, or a catalytic converter delete exhaust. This miata came in due to this issue after the owner …
11Jan2012
The spec miata continues….
So a big issue with Miatas is the rear suspension. The throughbolt in the rear carrier is exposed and becomes siezed. Also the rear axle splines sieze into the hub. After destroying the axle, chopping the bolts into pieces, leaving it under 24,000lbs pressure overnight, and finally putting a cheater bar (allegedly) on the press, the carrier was finally free. This had to be done since the frozen lower carrier to control arm bolts would have caused some crazy handling …