Yes I had changed axis info by right clicking on the columns or rows and you change them to what every you like. I had copied and pasted the columns info from the 2016 Camaro.Originally Posted by IARLLC
Yes I had changed axis info by right clicking on the columns or rows and you change them to what every you like. I had copied and pasted the columns info from the 2016 Camaro.
Yep. I figured it out while writing that. Wish I had figured it out a long time ago. Makes accurate control A LOT easier. Thanks
So I'm curious now, how would the AXIS change affect your thoughts on adjusting the Desired % for a stock 207 thermo?
Also kicking around changing the ECT Override to 224
I am looking at this:
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It looks like the Camaro and Corvette don't use the State vs Desired % like the Silverado, it looks like it gives them more control using the Desired by % table.
Last edited by scr71822; 04-01-2019 at 07:15 PM.
That should give you:
low speed at 203
2 speed at 207
3 speed at 212
4 speed at 215
That should work fine and keep you about 10 degrees cooler than stock.
I got another question for you, I've been playing around with the Desired ECT at 208 stock is 221.
This with no other changes, what effect would it have, would it force the ECM to try to adjust fan speed to the parameters or is it pretty much pointless?
I honestly don't know. It is possible that the Desired ECT is taken more in to account on the VETTE calibration since it does not seem to have such direct/clear settings like the trucks.
Based on the chart I posted at the beginning the chart you posted above has:
1st speed on at 179.3
2nd speed on at 184.6
3rd speed on at 191
4th speed on at 200.3
and it would not go back from 1st to off (1>0) until it cooled off to 174.7. So with a 180 stat the fan would run constantly.
1st speed on at 184
2nd speed on at 189.3
3rd speed on at 195.6
4th speed on at 200.1
That will work.
I just remembered how the desired temp table (18170) works. With your desired fan% table (directly above 18060) it really does not matter since all 3 desired temp rows are filled in the same. 18170 further up the page shows further options for different torque/rpm zones. Bringing that in to play you can give more fan based on high engine load and/or rpm. Pretty cool but not that important for those of us that are just happy to get away from a radiator probe and switch
What would the effect be to zero out the State vs Desired % like the Camaro I posted earlier?
If that is the only change you make the fan won't come on at all. You would need to change everything else to match theirs'. Their relay layout is different. Have a look under Relay Controls > Output#1,#2,#3. Their method of control is way different. As long as you have the ability to control your fans with your system I would not mess with the other system.
I got my Mishimoto 180 degree thermostat today so I will be installing and playing with the fans.
I tested it in water and I saw it start opening about 178 degrees, appears to be fully open by 200.
I tool the Fan Desired % vs Desired ECT top axis and multiplied the tope row by .89 which is about 25 degrees cooler across the board.
I will see how the fan runs, if the cooling system can keep it below 190 I think it will be good and not excessively run the fans.
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Last edited by scr71822; 04-19-2019 at 12:08 PM.
So according to your table that I posted #9, you will have:
1st speed on at (12%) 188.7
2nd speed on at (24%) 194
3rd speed on at (36%) 200
4th speed on at (48%) 205
If the fan does not hit level 2 until 194 it probably won't keep you under 190 on a hot day.
And you will have:
1st speed off at (10%) 171.1 (will never turn off once it is on)
2nd speed down to 1st speed at (20%) 192
3rd speed down to 2nd speed at (30%) 197
4th speed down to 3rd speed at (45%) 204.7
The biggest issue with these settings will be not turning off until the temp drops to 171...never. If you change your top left corner from 171.1 to 185 or so the fan will probably be able to cycle completely off at idle.
Do you see where I wrote the 12,24,36,48% and 10,20,30,45% next to your temps. Those are the % points in the table I posted back in post #9....the points at which each step will be taken (0>1, is turning on the 1st speed, 1>2 is increasing from the 1st speed to the 2nd speed, etc. etc.)
The table you posted in #28 is going to keep you closer to your goals than this will....but I was not completely right saying, "it will work" as it won't have the fans turning off (1>0 happens at 10%) until 179.3. Is this making sense? If you put a column of 10s under 184 (turns the fan off at 184) and a column of 12s under 188.8 (turns on the 1st speed at 188.8).
I installed the Mishimoto 180 degree thermostat, and I don't think it will be hot enough in northern climates in winter. It was 73 deg and sunny today. The truck only managed to hit 180 after a full throttle to 70 mph. The fan never turns on with this stat at these temps. It stayed mostly in the 170-172 range.
I'm thinking a 187 or 195 would be better for a daily driver.
Last edited by scr71822; 04-25-2019 at 03:48 PM.
Stock is 194. A 180 is plenty. These engines make power at 175-180. You?re already on the hot end of that. If the stat is working correctly it should close at 180 and hold you there despite how low the ambient
Last edited by nicul15; 04-25-2019 at 04:00 PM.
sounds like a faulty thermostat. a 180 begins to crack open at 180 and is fully open around 194. if it is running below that then it's stuck open. that's what happens when we buy things from mishimoto.
Katech just dropped a new 174
I tested it in water on the stove before I installed it. its definitely not stuck open. I am also running water wetter with my antifreeze. The previous 180 stat I had, the gasket failed and it was stuck open, it was 30-40 deg cooler than this one.
Last edited by scr71822; 04-25-2019 at 04:30 PM.
On the stove it was opening before 180.
Then it?s not truly a 180. Look at the Katechs. They just brought production In house to improve quality control
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