High Flow Catalytic Converter

[severous01]

i had a 383 stroker with stock manifolds, stock y pipe dual cats and aftermarket exhaust...ran almost failing for PA emissions. i put on long tubes and a SINGLE CAT from random tech and i got waaay better emissions. HC and NOX went way down, not so much on CO2 tho, and co wasnt much lower but they werent bad to begin with.

i understand what you're saying about 'physics' and i only bought the cat because it was 'emissions legal' and i didnt believe it. but the numbers proved it, and the sound did too.

now i dont know how they did it and i also dont know if it was much power added vs the LT header install, but i passed emissions with a stroker motor, and a cam motor with no problems with this cat. so i'm game if i can afford another

the bad side to this cat is simple...it's extremely expensive vs the magnaflow high-flow cat. it's like 400 bux vs 30