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I’d get a code reader of some sort, first and foremost. Once you can pull the codes, you’ll have a much better idea of where the problems lie.

Can you trace the wires out to where they attach on the other end?

So you’re asking ram to lock in a fix for a problem you didn’t even have? Gotcha.

Did you pull rockers/pushrods and verify damage, or are you just trading off trucks based purely off the sound they make? These CGI block engines make different noises than their earlier counterparts, and it isn’t necessarily because they are all eating lifters.

It seems to be helping, but it’s too early to truly tell. I’d like to get a few 24 hour regen cycles in before I call it a win. 13 hours into my current regen cycle, when previously the truck was leaning towards 6-10 hours.

Let’s put it this way. There is a reason the ECM doesn’t operate its automatic regens on miles.

Under 20% idle time for both scenarios that I listed. Mileage just doesn’t tell the story that hours of operation does.

I’ve had 12 hour and 24 hour regen periods spanning similar mileage. Mileage has too many variables, whereas run time is absolute, and how the computer manages timed regenerations. If I was only tracking miles, I’d have no idea there was any difference in the performance of my DPF for those...

Miles are a pretty inaccurate way to track regenerations. Monitor your regen status, and note engine hours in between regenerations. It’s a good way to gauge DPF health. Soot based active regens are triggered when your EVIC hits appx 45% full on the DPF reading.

I’d say the cylinders are the least of his worries.

Which number are you calling? I have always had good luck reaching them at 800-601-8072. However, their re-stocking fee is incredibly frustrating.

Tire noise is huge in a vehicle that covers a lot of highway miles. Radio or not, some tires are simply over powering. The last thing I want is a howling set of mud tires on a vehicle that I cover 50k miles a year in.

How long are you driving at that speed? It usually takes my pickup a bit to get there, but after 20-30 minutes the heat seems to pick up and live pretty close to 700, with spikes up into the 800 degree range even.

Changing the effective gearing to 3.33 would be reason enough for me to want nothing to do with a tire setup without a gear change. That would be an absolute dog to drive empty, much less with a load on it. To each their own, I suppose. Some guys just gotta have that stuffed tire look, and...

I can’t say I have ever been tempted to taste the forbidden milkshake lol

Let’s put it this way. Reputable transmission builders (like Randys) won’t warranty a transmission on a truck with 37’s unless there is proof it’s been re-geared. Big tires are absolute hell on transmissions, especially in overdrive gears. Leverage has a hell of an effect on the forces seen by...

Not sure if you’re a 68 or an Aisin guy, but the overdrive clutches on your trans will certainly appreciate that decision if you’re on stock gearing.

Take some time and read through the “frequent regens” thread on this forum. Lots of good information in there. Driving style, MAF sensor, Air filter used, idle time, EGR contamination. Lots of things can be contributing. I know I have started using Archoil and changed my MAF sensor after...

It’s definitely part of the problem. The DPF is one of those items that the worse it gets, the worse it gets. Short regen cycles lead to shorter regen cycles. That being said, it sounds like you definitely have a problem upstream.

Fleetguard filters are great, so keep that up. What are your driving habits like with the truck? Does it ever get to stretch its legs for an extended period of time at highway speed, or pull a decent load?