Dodge Cummins Diesel Forum - View Single Post - What CTT Tune are you running?
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post #9 of (permalink) Old 09-20-2019, 12:00 AM
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Running 3.3 tune as well. Just got an email today from them saying to switch to 3.4 as they have made some changes that effect on longevity. So I guess I'll be switching to it tomorrow.

'14 3500 SLT CCLB SRW 68RFE 3.42
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