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Old 12-07-2017, 10:18 AM
lifespeed lifespeed is offline
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Originally Posted by 88LTDCV351 View Post
These aren't high flow, right? Just allow for bigger pipes?
I didn't see flow rates published. CARB actually dictates mfg's can't advertise improved flow. Might have to call AP Emissions. That said, the before/after Dyno on the Marauder cat/pipe upgrade was done with stock Mustang cats, not "high flow" aftermarket. I think they may have been 2-1/4". It could be the pipe size of the cat is important. The cross-section of the catalyst is far larger than the pipe.

2004 Silver Birch Marauder 130K miles
Wilwood Aero6 F, NMDP R brakes, Penske 7500DA shocks, Hypercoil 600lbs F and Grand Marquis R air springs, Addco tubular sway bars, Metco control & Watts, 31 sp axles, Stainless Works cat-back exhaust, Lidio tune, American Racing AR883 9.3" 50mm F 10" 59mm R 20" wheels, Pirelli P-Zero 265/35-20, 275/40-20 tires

Coming soon: Livernois 5.0L stroker, ADTR/Vortech V2 intercooled SC, Silverfox trans and Circle D converter
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