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| bryce67 |
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Is worth changing the stock cat with high flow will the be much rise in power I'm already runing extractors and 2.5 inch zorst? And cam
_________________ 1992 falcon eb manual xr6 minor head work j3 chip tuned to a el xr6 manual ecu pushing 130rwkw |
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| misskitten9871 |
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Age: 30 Posts: 201 Joined: 24th Aug 2012 Ride: 1987 telstar/2004 BA XR6 5spd Location: Newcastle |
some one here has said in a thread that the std cat and exhaust flow fine with a mild cam...when i put my hiflo cat on my car i didnt feel any differance in power, im pretty sure the std cat is pretty hi flo anyway, im pretty sure it's around 200cpi
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| bryce67 |
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So realy it's just a waist of time and money?
_________________ 1992 falcon eb manual xr6 minor head work j3 chip tuned to a el xr6 manual ecu pushing 130rwkw |
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| phongus |
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bryce67 wrote: So realy it's just a waist of time and money? Well depends what you mean by that. If your catalytic converter is rooted (old and not doing it's job) then it would be ideal to replace it...stock or hi flow it doesn't matter. If your cat is good and you want performance, it is not necessary. Should still get good flow out of stock, but it is best to get the cat modified with 2.5" outlets.
_________________ phongus = Post whore 2006 |
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| GeZza200 |
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you will gain 2-3rwkw with a highflow cat
_________________ EL Futura: CVE head, Wolf V500, ICE Ignition and Coil, 36lb injectors, Walbro 255lb, Paci comps, 3" exhaust, T5, Harrop Truetrac with 3.9s. Now with 198.9rwkw, (~185rwkw and 13.80 @99.1mph) with more power to come |
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| Pakrat |
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GeZza200 wrote: you will gain 2-3rwkw with a highflow cat s**t. |
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| GeZza200 |
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Pakrat wrote: GeZza200 wrote: you will gain 2-3rwkw with a highflow cat s**t. ?
_________________ EL Futura: CVE head, Wolf V500, ICE Ignition and Coil, 36lb injectors, Walbro 255lb, Paci comps, 3" exhaust, T5, Harrop Truetrac with 3.9s. Now with 198.9rwkw, (~185rwkw and 13.80 @99.1mph) with more power to come |
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| Pakrat |
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Bull s**t
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| GeZza200 |
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Pakrat wrote: Bull s**t ohhh..... well they do.
_________________ EL Futura: CVE head, Wolf V500, ICE Ignition and Coil, 36lb injectors, Walbro 255lb, Paci comps, 3" exhaust, T5, Harrop Truetrac with 3.9s. Now with 198.9rwkw, (~185rwkw and 13.80 @99.1mph) with more power to come |
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| Pakrat |
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So if I get any old stock standard falcon, and put a high flow cat on it I'll get 4rwkw?
Don't think so. |
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| GeZza200 |
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no, if you have a full exhaust system and change the cat to a highflow you will gain 2-3rwkw
_________________ EL Futura: CVE head, Wolf V500, ICE Ignition and Coil, 36lb injectors, Walbro 255lb, Paci comps, 3" exhaust, T5, Harrop Truetrac with 3.9s. Now with 198.9rwkw, (~185rwkw and 13.80 @99.1mph) with more power to come |
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| Pakrat |
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Maybe if you're old cat had collapsed
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| GeZza200 |
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Il post up some dyno sheets tonight
_________________ EL Futura: CVE head, Wolf V500, ICE Ignition and Coil, 36lb injectors, Walbro 255lb, Paci comps, 3" exhaust, T5, Harrop Truetrac with 3.9s. Now with 198.9rwkw, (~185rwkw and 13.80 @99.1mph) with more power to come |
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| Pakrat |
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I would like to see them, if indeed said gains are made I might just invest in one.
This is a dyne before cat but with full exhaust and then with cat replaced? |
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| TROYMAN |
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imo, on a dead stock engine it will make no gain at all..
i just took off the factory exhaust on my au ghia and fitted pacemaker extractors, 2 1/2" high flow cat and redback 2 1/2 system and made no gain in performance.. if anything made the engine less punchy off the line.. ive done exhaust mods to every car ive owned, but always done it bit by, catback first, then extractors a few weeks or months later and cat last..ive never really done a dyno comparison but this time it was all done at once and i think its all a placebo effect..lol.. |
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