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Old 08-13-2013, 12:01 AM
09HemiCrew 09HemiCrew is offline
Dodge Ram Forum Senior Member
Join Date: May 2012
Location: MN
Age: 32
Posts: 103
Gender: Male
Vehicle: 2009 Dodge Ram
Trim Level: Laramie
Color: Brilliant Black
Engine: 2009-20?? 345ci (5.7L) Hemi V8 390hp 407lb/ft
Rep Power: 4
09HemiCrew will become famous soon enough

Well, I got the Trinity installed tonight and went for a drive. The stumble I have coincides directly with knock/timing retard. I got up to -9 deg of knock retard and it would go to about -1.5 and up to about 3 at light-medium load, i.e. going up a small hill without downshifting. I did have the 87 performance tune loaded, but the feeling was exactly the same as without the tune installed. Here are a couple of photos of the plugs. Doesn't show up as good as in person, but you can see the ones that are white are out of cylinders 4 & 5. Anyone have any other ideas?

2009 Crew Cab 4x4 Laramie - 4.56 gears, Detroit Truetrac, Diablosport Trinity
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