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Message: [QUOTE="CurtisF, post: 117619, member: 829"] All great questions, TARM. I'll try to answer them (at least the ones I can). Bigwheel wanted me to tune his truck. He's had some issues for a while with cold start smoking, some excessive smoke when driving, and very high EGT's. He has been running someone else's tunes (I won't mention who because I'm not wanting to even give the slightest impression I'm trying to bash anyone or run anyone into the mud). Basically switching to a different set of tunes has continued some of these same problems. It seems that he's got a few issues with the truck that I'm trying to figure out. And since I've never seen HPOP pressures react like his does, it's why I started this thread in the first place. I agree. Just to note, when HPOP pressures don't come up, there's very obvious smoke to accompany it. So something is going on. Pretty much, yes. Although rolling into it still doesn't quite peg 3K psi.... it's just below it at 2900-something. It should max at 3100, which is what the other truck does. So it seems the HPOP is struggling already. I wasn't there when bigwheel checked the oil. However, I haven't seen or heard of bubbling oil issues from the other truck. They aren't running the same oil. Bigwheel is running Schaffer's, the other truck.... I don't know. I'll leave that question for bigwheel. I don't have the datalogs recorded. Next time we meet up I'll do some recording. If a pressure spike is happening, it's doing it so quick that AE doesn't see it. Because when I had AE hooked up, I would watch pressure build to 2200, and stop. No spikes registered. [/QUOTE]