LT Knock and ST Knock Issues at Cruising Speeds

[stroudtom]

Changed over to stock modified tune, burning 87 oct and there's Lt/St kn here also. Need a little time to see how much compared to the 87 oct tune. Probably will switch back to 89 oct fuel and check it on the next fill-up with the stock tune to see if it diminishes.

Just updated to the "d" crom and tried mileage booster, knocking son-of-a-gun at part throttle. Went back to modified stock and will follow plan above.

[txsport]

If you are experiencing LT and ST knock as described, its best to return back to stock and let DS sort it out. They will figure it out and fix it!!
I know its not fun not being able play but its a lot better than having to pay.

[sharkcohen]

I'm seeing this issue as well on my 2012 Challenger SRT8. I captured these logs while running the stock modifiable tune, unmodified. Just cruising down the road.

[NealXB2003]

Put mine back to stock today, no knock whatsoever........

[txsport]

Just curious, did any of you notice if the MDS was engaged or not??

I checked to see if the actual MDS turning on and off was causing the LT and ST knock but I didn't see/hear any correlation. I put the truck in tow/haul and still saw the LT and ST knock so its not the MDS by itself.

Hopefully some clarification will come our way soon!

Don't want no

[stroudtom]

My MDS was on, RPM below 1500, 4/5th gear and light throttle pressure. Still seeing it in stock modified tune, have about 3 counts of LT right now. This is less than any other tune.

[NealXB2003]

Mine was at it's worst right after mds turned off. Like if you've set the cruise and coast down a hill, about the time you hit the bottom of the hill and start up the other side, mds turns off and returns to 8 cyl mode. In that scenario, mine would ping a couple times that you could hear in the cab.

[eric.hauptman]

I have had the same issues, however even with it being at stock tune i'm getting st of 2.5-6 and lt of 1.5-4, at 50 mph touching the throttle increases lt and wot increases st but decreases lt either way i still have kr what can be done about this?

[stroudtom]

I have had the same issues, however even with it being at stock tune i'm getting st of 2.5-6 and lt of 1.5-4, at 50 mph touching the throttle increases lt and wot increases st but decreases lt either way i still have kr what can be done about this?

I am still running 87 oct till the next fill up, what fuel are you running?

Light knock at part throttle may be the norm considering I'm running the stock tune. I remember many cars I had pinged under light loads. I haven't heard a car audibly ping in a long time so maybe seeing it on a gauge has caught us off guard so to speak.

[txsport]

Mikel,

Any idea yet as to what the cause is? I know y'all are very busy but any update?

On another note, when I re-did my Trinity and went back to the old B, the truck is def slower than the Ci file. Can I just reload the trinity-1r09.crom and then use the update of trinity_dcx_gas-1t09ci_update.crom to get back to the file that worked the best for my truck until y'all get everything in order? Or can I just update from the trinity_dcx_gas-1r09b_update.crom with the Ci??

Thanks

[mikel]

load this update, its all the latest fixes in one

[sharkcohen]

Is this update for everyone, or just trucks?

[sizzle06]

Is this update for everyone, or just trucks?

I would also like to know

[mikel]

everyone...

[txsport]

Loaded with no problems, truck started right up.

I will get some logs and times tonight.

THANKS MIKEL!!!