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I may detune this thing a little bit.

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Old 01-05-2019, 09:57 AM
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Originally Posted by UNBROKEN
Because nobody has a cat that’s proven to live under high boost. They all melt down.
are you talking F150 bolt on?

Otherwise I'm sure there are HFC's out there that live under high boost. I bet Vibrant makes one that could be used. yup, they do: https://vibrantperformance.com/catal...Path=1527_1326
Bet those puppies would hold up to boost.
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Old 01-05-2019, 09:59 AM
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Let me rephrase...every single available high flow cat on the market has melted down...even the ones claiming to be for high boost applications.
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Old 01-05-2019, 10:05 AM
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Originally Posted by UNBROKEN
Let me rephrase...every single available high flow cat on the market has melted down...even the ones claiming to be for high boost applications.
I have an old acquaintance that builds 1000+whp GTR's. I know several of his cars have HFC's on 'em. I wonder how those survive, or if it's just a calculated 'matter of time' before replacing.
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Old 01-05-2019, 04:48 PM
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Originally Posted by UNBROKEN
Normal day to day playing around it’s right at 15 where it should be the way it’s set up. It just creeps up on really high speed runs.
It sounds to me like the intercooler water is getting hot on high speed run. The post-sc air density must remain constant so the pressure goes up to compensate for higher air temp.
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Old 01-05-2019, 05:14 PM
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That’s what we came up with as well. A little boost creep due to heat.
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Old 01-08-2019, 08:23 PM
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holy crap that’s awesome Unbroken. That would scare the pants off me. I’m at 12lbs on the Roush. Switch to the VMP Gen3 and E85 and only jumping to 15lbs. Although that makes me now want to bump it up more seeing yours is holding up.
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