OP
Thread Starter
#81
Thread Starter
#81
And some more:
No problem, if there is any other information you need please let me know I will post it.
Another thing I wanted to mention is CCT, which is Catalyst Temper. This is an inferred reading from multiple parameters that are being monitored by the ECU. You can also monitor it yourself with the Cobb Accessport if you would like. There are tables in the software (See below) that have thresholds set. If these thresholds are exceeded they have a protocol to introduce more fuel for cylinder temperature control. I monitor this via a gauge when tuning to see how close I am getting to the threshold, this also gives me reason to believe that the factory downpipe and catalyst flow very well. During my tuning the temperature never increased beyond the factory range, and was still 20-25% away from being anywhere near the thresholds set. This tells me that with the increase in boost, fuel, and timing that the cat is not increasing in temperature and is not holding exhaust gases due to a restriction.
First Table: CCT Limit Safety Factor - This is the threshold that is put in place to make fuel control protocols active. It
Second Table: CCT To Begin Fuel Control (Primary) - This is the temperature ceiling set to activate the primary injection of fuel to decrease CCT.
Third Table: CCT To Begin Fuel Control (Secondary) - Same as Primary above, but the "backup" just in case the primary protocol can't cool the catalyst temperatures.
Fourth Table: CCT To Exit Fuel Control - The temperature that the catalyst needs to return to to cancel both Primary or Secondary injections.
No problem, if there is any other information you need please let me know I will post it.
Another thing I wanted to mention is CCT, which is Catalyst Temper. This is an inferred reading from multiple parameters that are being monitored by the ECU. You can also monitor it yourself with the Cobb Accessport if you would like. There are tables in the software (See below) that have thresholds set. If these thresholds are exceeded they have a protocol to introduce more fuel for cylinder temperature control. I monitor this via a gauge when tuning to see how close I am getting to the threshold, this also gives me reason to believe that the factory downpipe and catalyst flow very well. During my tuning the temperature never increased beyond the factory range, and was still 20-25% away from being anywhere near the thresholds set. This tells me that with the increase in boost, fuel, and timing that the cat is not increasing in temperature and is not holding exhaust gases due to a restriction.
First Table: CCT Limit Safety Factor - This is the threshold that is put in place to make fuel control protocols active. It
Second Table: CCT To Begin Fuel Control (Primary) - This is the temperature ceiling set to activate the primary injection of fuel to decrease CCT.
Third Table: CCT To Begin Fuel Control (Secondary) - Same as Primary above, but the "backup" just in case the primary protocol can't cool the catalyst temperatures.
Fourth Table: CCT To Exit Fuel Control - The temperature that the catalyst needs to return to to cancel both Primary or Secondary injections.
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