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Old 01-29-2013, 11:24 PM
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NWRQC NWRQC is offline
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Join Date: Dec 2011
Location: W.A
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Vehicle: 2007 RAM
Engine: 2007-2011 409ci (6.7L) Cummins Turbo Diesel 350hp 650lb/ft
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Oh and which tune family are you running? With or without ATT?
If you are running the default tune family then you are running ATT. If so try switching to the non-att tunes because the drive pressure will be a lot lower than the tunes with ATT. High drive pressure is a leading contributing factor to a blown head gasket..Among other things.

Also I just thought about this.....What are your defuel settings at? You might be hitting boost defuel which will cause the tune to default to stock until boost drops below the defuel setting. So you are going from the 175hp to back to stock, then back to the 175 tune after boost pressure drops.
Mine are:
Boost 36psi
cold coolant 180
Hot coolant 220
trans temp 180
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