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#1 | ||
FF.Com.Au Hardcore
Join Date: Jul 2005
Location: Lyndhurst
Posts: 563
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What a difference, i finally put my cat on yesterday, i was thinking that my standard cat was getting to be a big restriction, starting to block up. So i bought a Stainless Steel inside and out 200Cpsi cat.
So yesterday i went to a mates work to weld it up, pulled my standard one off to find it has alot of metal dags on the inside where it was welded, so i measured the internal diameter and was only 40mm, the rest of the cat was 50mm internal, now its 65mm all the way. It has made the car so much smoother to drive and doesnt run out of breath up top and i found a little bit of low end torque. It now has the "bite" in the note which sounds good, nice and quiet on the freeway and nice grumble at idle. I didnt expect that much from the cat. But it doesnt crackle when slowing down which i thought it would |
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#2 | ||
Audi S3
Join Date: May 2005
Location: Sydney.
Posts: 8,307
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if it doesnt crackle then ill never change my cat lol the crackle is my favourite part of the exhaust note when backing off! good to hear you got some good results with it though!
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#3 | |||
Its Resonating!
Join Date: Jun 2006
Location: Sydney, NSW
Posts: 1,612
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Quote:
Is that a "Ballistic Cat"?? |
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#4 | ||
Afterburner + skids =
![]() Join Date: Dec 2004
Location: Skidsville
Posts: 12,122
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What's the cat's name?
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Speed Kills. So buy an AU XR8 and live forever. Oo\===/oO |
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#5 | ||
Critical Thinker
Join Date: Jan 2005
Location: Adelaide
Posts: 20,336
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snappy tom???
Im looking at getting a hi-flow cat also when I fit my s/c later. Good work btw. ![]()
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"the greatest trick the devil pulled, is convincing the world he doesn't exist" 2022 Mazda CX5 GTSP Turbo 2018 Hyundai Santa Fe Highlander 1967 XR FALCON 500 Cars previously owned: 2021 Subaru Outback Sport 2018 Subaru XV-S 2012 Subaru Forester X 2007 Subaru Liberty GT 2001 AU2 75th Anniversary Futura 2001 Subaru GX wagon 1991 EB XR8 1977 XC Fairmont 1990 EA S Pak 1984 XE S Pak 1982 ZJ Fairlane 1983 XE Fairmont 1989 EA Falcon 1984 Datsun Bluebird Wagon 1975 Honda Civic |
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#6 | ||
FF.Com.Au Hardcore
Join Date: Jul 2005
Location: Lyndhurst
Posts: 563
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the place i bought it off said its either a magnaflow or... cant remember the name, they said their the same quality but they will send whatever is in stock at the time. 180 is a pretty good price though i thought. My exhaust has never crackled when backing off :( except when its in cold mode, pops like crazy when letting the clutch out from 3rd-2nd.
ive noticed a massive decrease in under bonnet temp to, it was like opening an oven door, now its like opening a bonnet. does the design of muffler make the crackle? i only have a single straight through centre muffler, no hot dog or resi but still doesnt crackle Good luck with the S/C blueoval, i want to fit the raptor kit too! |
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#7 | |||
Resident AFF detailer
Join Date: Dec 2008
Location: Melbourne, VIC
Posts: 3,730
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Quote:
My AU's just ticked over 200K and i'm looking to upgrade the exhaust......i've read a lot of posts that say the standard cat is fine, but if mine's all blocked I figure might as well get hi-flow with rest of exhaust.......
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No longer an 'active' detailer. |
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#8 | ||
Afterburner + skids =
![]() Join Date: Dec 2004
Location: Skidsville
Posts: 12,122
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At 200K, I'd change it anyway. Got nothing to lose.
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Speed Kills. So buy an AU XR8 and live forever. Oo\===/oO |
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#9 | |||
Critical Thinker
Join Date: Jan 2005
Location: Adelaide
Posts: 20,336
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Quote:
__________________
"the greatest trick the devil pulled, is convincing the world he doesn't exist" 2022 Mazda CX5 GTSP Turbo 2018 Hyundai Santa Fe Highlander 1967 XR FALCON 500 Cars previously owned: 2021 Subaru Outback Sport 2018 Subaru XV-S 2012 Subaru Forester X 2007 Subaru Liberty GT 2001 AU2 75th Anniversary Futura 2001 Subaru GX wagon 1991 EB XR8 1977 XC Fairmont 1990 EA S Pak 1984 XE S Pak 1982 ZJ Fairlane 1983 XE Fairmont 1989 EA Falcon 1984 Datsun Bluebird Wagon 1975 Honda Civic |
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#10 | |||
FF.Com.Au Hardcore
Join Date: Jul 2005
Location: Lyndhurst
Posts: 563
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Quote:
from what ive heard about cats, i lost low end power, and torque. and the underbonnet heat was massive. so i just bit the bullet and put one on. It also felt a bit "breathless" up top, it had no problems reving just the power died off at the top. |
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#11 | ||
FF.Com.Au Hardcore
Join Date: Jan 2009
Posts: 2,146
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great info
As the cat is the major restictor it'd be worth doing on a a stock setup I guess |
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