Ultimate Exhaust Efficiency The low-density cell (1/4 of stock) and enlarged front pipe improve the exhaust efficiency. The optimal blending ratio of the catalytic noble metals achieves the purification performance of the stock.

Reliable Use with Hard Tuned Engine and High Performance Exhaust System The low-density cell (1/4 of stock) and enlarged front pipe improve the exhaust efficiency. The optimal blending ratio of the catalytic noble metals achieves the purification performance of the stock.