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I had a good rev slam on one turn as well running canned tunes on my sct x4. Gearhead tunes cleared that right up. Mileage is slightly worse but I didn't buy a diesel to pinch pennies... Don't think I would run any other tunes other than Gearhead at this point.

I usually switch to 15w40 during summer, but its really not a big deal. As they said its just the cold flow properties.

The x4 locks you out of dpf on tunes once you load custom tunes. I put it back on canned tunes and it's running fine now. Some people have been telling me that if it does it again to put it in neutral and it should fire up. I will see if I can get her going when I get home. The reason I...

Yah the tunes from river city diesel run fine. I just don't like how they shift. I will call gh Monday.

Isn't mcc for h&s? It seems like the PCM is looking for sensors in the exhaust. I don't have any with my sct x4. I will call gh Monday.

That worked. Gonna run her around to make sure batteries are charged then reload the tune. I will run it around the block again and try shutting down and restarting in my own driveway...

Ok if returning to canned tunes doesn't do it I will do that. Any idea where to start to find out why it did it?

Alright. I have an sct x4 and just loaded the 100 hp street tune from Gearhead. Went for a drive and had to stop for fuel. After filling up I get a no crank no start with no codes. Any help or ideas?

I have an early job 1 and it would flash the message. I always knew when it was about to regen. You could hear the engine tone change.

Lifters rockers push rods. The usual. You have low miles at least so they shouldn't be too bad. I would say throw a coolant filter on there too.

With only a 5" dp back exhaust and stock turbos I hover around 600 to 650 going 60 on a flat road.

What hp tune are you running? What are your egts flat and level at 65? I'm running the 210 tune and at 65 I am hovering around 550 (less this time of year around 500).

How much fuel are we talking?

Again throw a monitor on her and give it a good long drive. That will tell you what's really going on. How much blow by?

I got mine for 23k with 105000 on the ticker. If you can get it out on the freeway for a while and monitor the ect/eot. Find out when the last coolant flush was. All that good stuff. How long has it been deleted??

Mine does it for the first 2 min during regen till the exhaust gets to temp then there is nothing.

Just hooked my monitor up and with stock exhaust the Bp is insane...

Yah that first time causing a whiteout caused a bit of a heart attack.

That's why this site is here.

Just sounds like a regen bud. It will smoke for a min or two if it's cold out. And the truck limits boost during regen. Mine did the same thing.