AH64ID

The biggest source of coolant heat is the head, which is also where EGTs are the hottest. If I am above 200° on coolant boost makes a big difference in coolant temp too as the intercooler is putting much hotter air onto the radiator. I also see a direct and very quick correlation to pre-turbo IATs and boost. My only theory is the heat being rejected by the intercooler. I realize that higher boost is from fuel and every temperature is thus rising, but with all the gauges I have started to notice order of correlation.

It could be a temp sensor issue, or it could be different software. It's likely the software is the same but it's a possibility. The ultra gauge is good and inexpensive. EDIT: I pulled up seveal of the 03's in UDC Pro and they all have a pre-heat time of 10 seconds between 15° and 66°F. The label says ambient temperature, which is taken with the sensor on the air filter housing. I have also heard they use MAP sensor temp.

IMHO non pressurized filters are a waste. I actually think it would decrease the coolers ability as it will hinder fluid movement. Think about how long a coffee filter takes to drain, and that's with gravity. As for the candle comparrison, the same can be said for fluid temp sender locations. The difference in a candle and a transmission is that the trans has rotating gears. They aren't a pump but they do splash/move fluid that isn't obstructed.

Yeah didn't realize you didn't pay the MSP.

Thats why. 32° at 4500 is a whole lot different that 32° at 2500.

What rpm range does it pull at?

@notlimah, where in the PNW are you?

Had that perfectly good used one ready to ship at 64% the price....

Yeah that's a lot of timing!

What are you running now? We have to remember VP timing and HPCR timing are not the same thing, especially at low fuel flow rates.

Yeah I agree it's not that important, it was just not what I expected to see for a VP truck... Anyhow back to the good stuff :-)

Keep an eye on your voltage while you sit. I think Touch is draining my batteries. I have only been getting 2 weeks or so out of them with the Touch installed but it sat for 6 weeks earlier this fall without the Touch and the voltage was great when I got in and fired it up.

Very nice. I just got back from 2 weeks west of Challis, ID and was at 6-9K feet. We got some snow, 3-6", about 10 days ago but it was all but gone when we left. I did 150 miles in 1-3rd gear... I think I got around 7-8 mpg for that bit! But that's hard driving.

I guess it's just a terminology thing. I've never hear the pre 2006 protocols called CAN, simple SAE J1939, ISO 9141, SAE J1850, etc. In 2006 it switched to a 11 Bit CAN and everything went CAN, not just the ECM.

Quick question, am I missing something with the CAN Bus thing? I didn't think Dodge went CAN Bus until 2006....

If someone wants your trailer, or into your house/shop/truck, they are going to accomplish their goal. The purpose behind most locks, on anything, is to provide just enough hassle that it's not worth the time for thieves.

After 6 days without internet I'm glad to hear it's gone uphill. Be sure to hollar if you need anything.

What's the feature? Timing log? That's pretty cool. She really starts to defuel at 3K :-) CanBus fueling must be the Quad fueling on top of OEM? Some interesting timing changes in there based on fuel.

I think my mileage starts to drop around 8-9° lol. But that's with a pilot. I idle nice at 8° warm without a pilot but I'm guessing the pressure is higher and no pop delay. Im thinking the pop delay at cruise pressure is the biggest reason for the timing. With my fueling and injectors my wot timing is low, around 19° at 3500 rpms and only about 10° at 2200. That's all at approx 22K psi and no pilot wot at those rpms. WOT and 2000 rpms is less than 8°...

Hollar if you need something and I'll see what I can do.

That still seems very high for cruise timing. WOT and idle seem believable. Didn't most 12V's have 14-15° all the time?

Was the mileage poor before the rebuild? What kind of injector test machine was used? I'm not sure I've ever seen 189K mile injectors pass all the Bosch tests. What are you using to look as TPS voltages? Does it have the ability to look at the MAP, rail pressure, etc?

Light fuel will be higher timing because it's harder to ignite a small amount of fuel so it needs more timing to do so. If you injected WOT fuel like you did cruise fuel you would be down on power and up on cylinder pressure BTDC. Seems weird to do most the tuning off of boost. There is a boost fuel limit table for HPCR's but it's just max fuel and not how much fuel is delivered under normal circumstances.

I would check the valve lash but you're correct that it's likely good. When was the last time you ran a fuel injector cleaner or towed heavy with it?

Michael, do you actually notice a difference with a full/empty water tank? I really don't ever see a change due to trailer weight unless I am over 1K heavier/lighter and then it depends on how many grades I pull and even then we are talking less than a 1/2 mpg, if that. The wind resistance just seems to have so much more of an effect than the weight. (On flat ground my camper pulls harder at 19K GCW than a dump trailer at 26K GCW). I wonder if 18° isn't as precise with a VP as a HPCR, meaning at 18° on a HPCR the injector would open but on a VP isn't that where it starts to build pressure and once pressure is met it pop's and injects? I could see much more than a 250us delay with a VP... but that's just thinking out loud.