High Flow Cats Pros/Cons
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New User
Joined: Oct 2002
Posts: 13
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High Flow Cats Pros/Cons
Can anyone tell me the pros and cons of replacing my factory cats with high flow cats? Im currently running a Flowmaster 40 series on my 4.0 Explorer but still looking for more power. Are High flows the way to go? Thanks.
Senior User
Joined: Feb 2000
Posts: 482
Likes: 1
From: Connecticut
High Flow Cats Pros/Cons
Somewhat louder. Mine passed the IM 240 emission test here in CT. They look under the vehicle with a mirror to inspect. Not a big power gain unless the originals are plugging but it is noticeable.
Mark
Mark
Post Fiend
Joined: Nov 2001
Posts: 14,947
Likes: 6
From: Topsfield, MA
High Flow Cats Pros/Cons
The high-flow should pass an inspection just fine. I put one on mine, but still have 1 stock cat. It's a 3" in and 3" out from summit, 80 bucks. Catco brand. Good cat, no problems but I didnt see much for a power improvement even though I know it flows better. 5-10hp is hard to feel so i'm sure it's just my judgement. The 1st cat is probably alil plugged anyway. There are no cons that I can see.
Primary rig is Green Thunder:
95' F-150 XLT 4x4, 302, 5 spd, MSD 6A, Flowmaster Exhaust, Sunroof, Clear corners w/ Diamond headlights, CD player with 2 10" subs and some 32" BFG Muds
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Check out my Gallery for a look-see.
Justin - One Happy FTE Member
Primary rig is Green Thunder:
95' F-150 XLT 4x4, 302, 5 spd, MSD 6A, Flowmaster Exhaust, Sunroof, Clear corners w/ Diamond headlights, CD player with 2 10" subs and some 32" BFG Muds
.Check out my Gallery for a look-see.
Justin - One Happy FTE Member
