Vibrant high flow cats on FI - Forums at Modded Mustangs
 
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post #1 of 3 Old June 11th, 2019, 01:24 AM Thread Starter
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Vibrant high flow cats on FI

As I venture further and further into FI, I was told vibrant cats are needed or I risk failure. I've heard this 3 times now but from coyote guys.

I have BBK ceramic LTs, matching off road BBK H pipe with Magnaflow spun cat metallic core cats (59956) welded in and stingers. Going catless isn't an option for me as I hate fumes and trumpeting. With my future power goals being 400hp, is this something to really be concerned about? These cats run 358 each! I paid $100 each for the Maggies. I bought metallic core for the pure fact of being FI in the future.

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post #2 of 3 Old June 11th, 2019, 07:39 PM
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How much boost are you planning? I'v never run Vibrant cats but I've been running a ProCharger at 8.9 psi for many years and around 130,000 miles with BBK LTs and high flow cats. I haven't had any problems with the LTs or the mid-pipe. I don't have any idea why people are saying you have to go catless. It isn't true.

STD corrected I'm very close to 400 rwhp. Assuming a 15% loss through the drive train the SAE corrected 388 rwhp becomes 450 bhp. I don't think you will have any problem achieving your goal with the exhaust you have.

P.S. All my mods are in my garage.

ProCharger P-1SC, 9 psi, STD 396/383; Uncorrected 388/375; SAE 383/370.
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Last edited by Eagle2000GT; June 13th, 2019 at 04:18 PM.
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post #3 of 3 Old June 13th, 2019, 07:37 AM
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pretty sure the vibrants are spun metallic cats just like the magnaflow ones, I have the same magnaflow cats on my car 12 psi just shy of 500whp no issues for the past 3 years or so, I race the shit out of my car, I think you will be fine.

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