HKS 33005-AF005 Metal Catalyzer BL5/BP5 for EJ20X SUBARU Legacy B4 / Legacy Touring Wagon

Code No. 33005-AF005

The Metal Catalyzer that has both high output and high purification system.
New Legacy B4/Legacy Touring Wagon (BL5/BP5) AT

Features

• A Metal Catalyzer to give more to the Legacy tuning. It's a combined unit type of Front Pipe with 150 cell catalyzer.
• There are for both 5MT and 4AT. We have received public organization's certificate of 10-15 mode exhaust gas test for both.
• We have set bypass pipe for extension part to prevent the exhaust gas turbulence and also we have redesigned spherical surface gasket and increased pipe diameter for muffler connection part.
• These will prevent knocking of EJ20 tuning and lower the secondary exhaust pressure after turbine and primary exhaust pressure before turbine and improve the intake efficiency.

Comparison of stock catalyzer and HKS Metal Catalyzer ouput

Comparison of stock catalyzer and HKS catalyzer exhaust pressure

* Above graphs are only for MT and Racing Suction combined. Please adjust fuel for Racing Suction combined.

Other parts

* Use of this products lead to change of boost pressure characteristics. Use of this product with HKS muffler is possible, however use with other manufacturers products and use with altered boost settings may require knocking and maximum boost setting inspection. If necessary please repeat setting.