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High Flow Cats 


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 Post subject: High Flow Cats
Posted: Tue Jan 23, 2007 6:48 pm 
Oompa Loompa

Age: 28

Posts: 26

Joined: 30th Oct 2006

Gallery: 1 images

Ride: Fairmont EF

Location: Rockingham
WA, Australia

Ive read somewhere that high flow catalytic converters are a complete waste of money, do virtually nothing, and are only worth buying with an exaust system if your current cat is rooted. Could someone please verify this?
Posted: Tue Jan 23, 2007 6:54 pm 
Fordmods Junkie
User avatar

Posts: 11605

Joined: 17th May 2005

Gallery: 11 images

Ride: EL Fairmont, VFR400 racer

Power: 144 rwkw

Location: Melbourne
VIC, Australia

Well so long as the current cat is not blocked and is modified to suit 2.5" flanges (another words flanges and piping are widened) then it would basically be the same. Not much different until you really start pumping exhaust fumes out such as at the drags with a turbo or supercharger.

Though I have a Hi-Flow cat sitting in my bedroom...I have not installed it because my old one is still running and I'm lazy. It is up to you if you want to spend the extra odd dollers for a hi flow cat. Just remember that you won't tell the difference.

that's my 2c

BTW anyone please correct me if I am wrong



phongus = Post whore 2006
EL XR6 motor, EL ECU + J3 chip, WADE 1673 Camshaft, 3" S/S intake, Pacy 4480, 2.5" Hi flow cat, 2.5" Lukey exhaust.
Max Power = 144.6 rwkw (03/05/2008)

Posted: Tue Jan 23, 2007 9:48 pm 
Getting Side Ways
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Age: 44

Posts: 1953

Joined: 1st Feb 2006

Gallery: 25 images

Ride: BA on gas. EL on gas. XF on gas.

Location: Greenacres/Adelaide
SA, Australia

Just put a hi flow 2 1/2 s/s cat on mine today. It had no cat on it for 1 day. It goes better and sounds better with the cat on. Yes mine was stuffed.



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