PCM Diagnostics & Tuning HP Tuners | Holley | Diablo

cat. overtemp

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Old May 4, 2009 | 02:22 PM
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Default cat. overtemp

What does this table do.What does rassing these numbers do to fueling.
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Old May 4, 2009 | 02:26 PM
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It dumps fuel to reduce your exhaust temperatures to protect your CATs.

For the HP addicted like you and I it means less peak power past 5k+ rpms.

Personally, I turn it off. If you are beating on your car regularly then your CATs aren't going to go the distance anyways.
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Old May 4, 2009 | 05:41 PM
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If you change the COT enrichment commanded, to
the same as your PE / EQ vs MAP vs ECT table
values then it will be unnoticeable when it does
kick on. Somewhat less effective perhaps. But
never seen anything on just how much fuel it
takes to stay "safe".
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Old May 5, 2009 | 07:05 AM
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Don't have converters I should zero this table out are raise these numbers.
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Old May 6, 2009 | 09:31 AM
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Just turn COT off if you don't have CATS.
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Old May 6, 2009 | 01:06 PM
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disable......
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Old Jan 8, 2011 | 12:41 PM
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If you change the COT enrichment commanded, to
the same as your PE / EQ vs MAP vs ECT table
values then it will be unnoticeable when it does
kick on. Somewhat less effective perhaps. But
never seen anything on just how much fuel it
takes to stay "safe".
I will give this a try
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