Directly mounted Stainless steel Exhaust manifold catalytic converter for Toyota Previa TCR10

Drill a hole in the proper position of the exhaust pipe at the front end of the catalytic converter, connect a pressure gauge, start the engine, and measure the exhaust back pressure at idle speed and 2500r/min respectively, if the exhaust back pressure does not exceed the specified value of the engine , it indicates that the catalyst support is not blocked.

If the exhaust back pressure exceeds the limit value specified by the engine, the exhaust system at the rear end of the catalytic converter needs to be removed, and the above test is repeated. If the catalytic converter is blocked, the exhaust back pressure will still exceed the limit value specified by the engine. value. If the exhaust back pressure drops, there is a problem with the exhaust system downstream of the muffler or catalytic converter, and the broken catalyst carrier is trapped in the downstream exhaust system, so it is very necessary to first perform a visual inspection to confirm that the catalyst carrier is intact. Problematic exhaust pipes, mufflers and catalytic converters can also be judged by measuring the pressure loss before and after them.