1999 Subaru WRX Changing a downpipe

Engine Performance problem
1999 Subaru WRX STI 4 cyl All Wheel Drive Manual 122000 km

Hi everyone

I own a 99 wrx sti version 5. No modifications, completely standard.

I am wanting to change the standard downpipe "frontpipe" and replace it with a aftermarket saimese down pipe which will remove the front cat. The remainder of the exhaust system would be left as the factory sti set up.

1. Would you recommend this change?
2 Would there be any benefit at all?
3. Any risk involved/future problems?

Thanks