The BMW E46 M3 has 200 cell catalytic coverters as standard (twice the restriction over CSL 100 cell cats). Fitting a High Flow Cat utilising 100 cells doubles the airflow providing significant power gains, typically 8-10Bhp.
Milltek only use HJS motor sport cats in their systems as they are quite simply the best.
Fully constructed from type 304 stainless steel and benefitting from Milltek's 100% guaranteed lifetime warranty.
