Somewhat on topic, but does anyone know at what temp these engines switch from speed density or MAF tuning? Just wondering how altering the operating temp to lower temps could affect other things.
I know the one from a 17-19 will. I have one sitting here I was going to install on my truck, but after seeing the improvements made for 2020, I want to get one of those now.Does the L5P cooler easily retrofit onto older blocks?
I know the one from a 17-19 will. I have one sitting here I was going to install on my truck, but after seeing the improvements made for 2020, I want to get one of those now.
Oil temp will probably come down but at the cost of heating up coolant temp as well.
the moment i put the aux radiator on, i saw oil temp stay much lower when pulling grades as i had more capacity for the heat. oil only saw a 20* difference from coolant compared to the 40* i usually saw. Ill be curious how it does this summer but in the tow home from the dunes, its been the most significant difference ive seen to date. That was with a cracked head and/or blow HG as well.
id love to see if a 2020 would fit and if i could ditch the air to oil cooler using it.
10-4, I've been debating about mounting a large oil cooler somewhere probably near the cooling stack.
With the mishimoto thermostats my temps stay very consistent (low temp, 185F) and have rarely seen it hit 200-205 towing my 30ft 5th wheel. I haven't hooked to my gooseneck yet with this truck so I don't know what ECT will go to. I am planning on adding an oil temp gauge as well to both trucks.
youre not in the same outside heat josh and i are, thats a totally different world.
I am most familiar with the LB7, and it will remain in MAF based tuning until the MAF fails (logically, not necessarily physically), then it still runs MAF based but instead of using the MAF value, looks up the expected airflow table. Went down that rabbit hole when my MAF physically failed and my expected airflow tables were WAY too low, making my truck so slow it was dangerous. AFAIK all "MAF-less" tuning for these trucks simply fails the MAF logically and maxes out the MAF fueling limits, so it doesn't restrict fuel at any time.Somewhat on topic, but does anyone know at what temp these engines switch from speed density or MAF tuning? Just wondering how altering the operating temp to lower temps could affect other things.
Please keep us posted! I also see lower oil pressure than I would like after a long hill climb, despite an aux oil cooler and my coolant temps staying in check, so I think my current limitation is getting oil heat into the coolant, not coolant heat out to the environment.I know the one from a 17-19 will. I have one sitting here I was going to install on my truck, but after seeing the improvements made for 2020, I want to get one of those now.
I am most familiar with the LB7, and it will remain in MAF based tuning until the MAF fails (logically, not necessarily physically), then it still runs MAF based but instead of using the MAF value, looks up the expected airflow table. Went down that rabbit hole when my MAF physically failed and my expected airflow tables were WAY too low, making my truck so slow it was dangerous. AFAIK all "MAF-less" tuning for these trucks simply fails the MAF logically and maxes out the MAF fueling limits, so it doesn't restrict fuel at any time.
If you take the thermostats out or have extremely low temp t-stats, the only thing that might happen is setting a code for thermostat performance, which can be disabled. There are a couple limiters and multipliers based on ECT, but as long as you ensure those do what you want at the temperatures you expect to run, it will run fine.
Please keep us posted! I also see lower oil pressure than I would like after a long hill climb, despite an aux oil cooler and my coolant temps staying in check, so I think my current limitation is getting oil heat into the coolant, not coolant heat out to the environment.
I've followed your adventures closely, and I do realize you are in a hotter environment than me and tow on a bigger tune. But you seem to fight both coolant and oil temps, while my coolant stays right at 95°C for the whole hill.a lot of people think that....
I've followed your adventures closely, and I do realize you are in a hotter environment than me and tow on a bigger tune. But you seem to fight both coolant and oil temps, while my coolant stays right at 95°C for the whole hill.
I plan to put a bigger oil cooler on this summer and see what that does, and I really should add an oil temp gauge so I'm not just guessing. I might just do the trick of moving the fuel temp sensor to measure oil temp instead, as I never have high fuel temps.
I do wonder why GM would increase the size of the oil cooler if that wasn't a limitation? If it bolts on, I'll try it and let you know how it goes. I'm not too proud to admit I was wrong if it doesn't work.
Or are you suggesting that as soon as I get the oil heat into the coolant, then I'll have coolant temp issues? Because I could see that happening...
I don't doubt that, but I feel like my oil temps will come down a lot more than my coolant temps will rise. I think if I can keep oil close to the same as coolant, the truck will have a better chance at keeping everything in check. It seems like once the oil temp has gotten so high, the coolant just can't keep it knocked down, and the coolant temp suffers as a result. I will probably throw on the L5P cooler I have and see what it does before I get the 2020 one since they probably won't be available for a few months.Oil temp will probably come down but at the cost of heating up coolant temp as well.
the moment i put the aux radiator on, i saw oil temp stay much lower when pulling grades as i had more capacity for the heat. oil only saw a 20* difference from coolant compared to the 40* i usually saw. Ill be curious how it does this summer but in the tow home from the dunes, its been the most significant difference ive seen to date. That was with a cracked head and/or blow HG as well.
id love to see if a 2020 would fit and if i could ditch the air to oil cooler using it.
I don't doubt that, but I feel like my oil temps will come down a lot more than my coolant temps will rise. I think if I can keep oil close to the same as coolant, the truck will have a better chance at keeping everything in check. It seems like once the oil temp has gotten so high, the coolant just can't keep it knocked down, and the coolant temp suffers as a result. I will probably throw on the L5P cooler I have and see what it does before I get the 2020 one since they probably won't be available for a few months.
I don't doubt that, but I feel like my oil temps will come down a lot more than my coolant temps will rise. I think if I can keep oil close to the same as coolant, the truck will have a better chance at keeping everything in check. It seems like once the oil temp has gotten so high, the coolant just can't keep it knocked down, and the coolant temp suffers as a result. I will probably throw on the L5P cooler I have and see what it does before I get the 2020 one since they probably won't be available for a few months.