Why ACAT HB?
ACAT’s proprietary metallic substrate technology is unique in the market offering an alternative to the me too standard ceramic substrates used by everyone else. HB stands for HerringBone pattern, which is at the core of every ACAT metallic catalytic converter. Our HB pattern substrates create a turbulent exhaust flow continuously breaking the boundary layer effect used by all ceramic CPSI substrates.
CPSI means cells per square inch. Acting just like a jail cell trapping exhaust gases in the channel they enter where they remain until the exit. The only variation with ceramic substrates is how many cells there are 400 CPSI is typical for EPA aftermarket, 600 CPSI is typical for CARB aftermarket, and 200 CPSI is considered high flow.
ACAT HB substrates use an entirely different construction allowing exhaust gases to intermix and flow through the substrate.
Developed at Delphi/GM enduring 5,100,000 miles of general fleet durability testing with no failures, ACAT substrates meet OEM durability requirements having been used and tested on some of the worlds most advanced engine platforms from 5.3L to 6.2L V8 engines.
Designed specifically for exhaust gas velocities encountered in todays V8 engine architectures our ACAT HB is meant as a plug and play option. Our ISO 9001 audited and 14001 OEM washcoat provider has specified the most current OEM washcoat technology for our converters. Benchmarking alternative units on the market with high return rates has driven us to specify a higher PGM loading as standard ensuring you are getting your moneys worth.