High Flow Full 3" O2 Housing for Evo 4/5/6/8/9 Bolts directly to stock exhaust

Bolts directly to stock exhaust joint

It is very important to understand that the air inlet tract of the turbo system is as important

Aluminum compressor discharge flange for EVO 6/7/8/9/10 turbo

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High Flow Full 3" O2 Housing for Evo 4/5/6/8/9 Bolts directly to stock exhaustHigh flow full 3" O2 housing for Evo 4 5 6 8 9. Deletes the factory donut gaskets to eliminate the 2. 5" restriction between most O2 housings and downpipes and creates a true 3" all the way through flow path from entry to exit. Works fantastically well with large stock location turbos with large turbine wheels. This eliminates one of the biggest bottlenecks in the Evo exhaust system. Also, 02 bung is strategically located away from the direct exit of