1987 - 1996 F150 & Larger F-Series Trucks 1987 - 1996 Ford F-150, F-250, F-350 and larger pickups - including the 1997 heavy-duty F250/F350+ trucks

High flow Cats?

Old 11-23-2000, 05:53 PM
Motorcraftsman is offline
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High flow Cats?

Old 11-24-2000, 01:02 AM
KevinT is offline
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High flow Cats?

What in the world does a "high flow" cat do? What company makes one to replace the 2 that are stock on my truck (1995 4.9L) the first one has a 2-1 reducer and the second is a big ##### cat with 3" pipe combining the 2, how much money would this run me? I had my cats tested and they work perfectly, but its technically legal to change them because truck is more than 5 years old, and has 116k miles on it (requirement is 50k right?)

basically I want to know if I'd feel any gains from a single high flow cat over the duel cat stock setup i've got

1995 F150XL - Reg cab/bed, 4.9L, 5-speed, Metallic Navy Blue/Gray int.
Mods: Tanno cover, bed-liner, 1200 watt Crunch amp, 2 10" Rockford Punch Subs, sony cd-player, K&N Filter, Flowmaster 40 series w/ no visible exhaust exit, BFG A/T 31"x10.5"R15 & Rancho RS5000 shocks

Old 11-24-2000, 05:32 PM
hotrodford_88 is offline
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High flow Cats?


Contact Summit racing at 1-800-230-3030, that is where I bought my High Flow Cat kit. Mine was an entire kit which bolted staright up to the exhaust manifold. No welding required, you can do it in your driveway. I think mine ran about $150-$170 I'm not sure on how much it was, after all it was over 2 years ago when I bought the system.

When you call them ask them if they have a "Direct fit Catalytic Convertor Kit" That's what I bought. It's a single cat / High flow unit. Trust me, mine ran 100% better after I installed it.

"You can always tell a Chevy owner, You just can't tell them very much."
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