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till then i have to watch the temps on the track which is impossible since my analog coolant gauge never goes over 219 degree even when digital is 240 degrees.. and in track mode they dont offer digital reading on coolant even though chevy gave me a letter saying they know analog gauge doesnt work..
Buy a $70K car and they tell me they dont know how to make a coolant gauge..
till then i have to watch the temps on the track which is impossible since my analog coolant gauge never goes over 219 degree even when digital is 240 degrees.. and in track mode they dont offer digital reading on coolant even though chevy gave me a letter saying they know analog gauge doesnt work..
Buy a $70K car and they tell me they dont know how to make a coolant gauge..
Check in with Ben @ WeaponX, he has a radiator in the works, should be getting close to finished, I believe through Ron Davis or Dewitts....?
Here are the fan tables, for you info:
You can see that the ECM Desires a coolant temp of 221
The fan is working at under 50% capacity until 215 degrees
194 degree thermostat
With a 160 thermostat and a simple reprogramming of a couple tables the car can be commanded to run at a lot cooler temps.
Very easy....just no thermostat available yet.
Last edited by Higgs Boson; Jun 24, 2014 at 11:36 PM.
Check in with Ben @ WeaponX, he has a radiator in the works, should be getting close to finished, I believe through Ron Davis....?
Here are the fan tables, for you info:
You can see that the ECM Desires a coolant temp of 221
The fan is working at under 50% capacity until 215 degrees
194 degree thermostat
With a 160 thermostat and a simple reprogramming of a couple tables the car can be commanded to run at a lot cooler temps.
Very easy....just no thermostat available yet.
Ive been speaking with Ron Davis themselves and Dewitts.. Last week Davis said 2 weeks
Mine runs runs 205 fans on
id have to go thru the tune to see what we demanded
Check in with Ben @ WeaponX, he has a radiator in the works, should be getting close to finished, I believe through Ron Davis or Dewitts....?
Here are the fan tables, for you info:
You can see that the ECM Desires a coolant temp of 221
The fan is working at under 50% capacity until 215 degrees
194 degree thermostat
With a 160 thermostat and a simple reprogramming of a couple tables the car can be commanded to run at a lot cooler temps.
Very easy....just no thermostat available yet.
Interesting, the fan table values are the same for my oem 2008 C6, except for the C6 has 187* thermostat. Why not program the fan duty cycle to come in at a higher rate instead of a thermostat change. Set the maximum of 90% at 214* and lower the temps along with the %. This will reduce the city driving temps by at least 10*F. Highway speed temps will remain about the same in the lower 190's, at least with a 187* thermostat it will. I believe my fan duty cycle table (tuned) starts at 196* at 25% stages up to 214* at max 90%.
Last edited by Mike's LS3; Jun 25, 2014 at 01:03 AM.
Interesting, the fan table values are the same for my oem 2008 C6, except for the C6 has 187* thermostat. Why not program the fan duty cycle to come in at a higher rate instead of a thermostat change. Set the maximum of 90% at 214* and lower the temps along with the %. This will reduce the city driving temps by at least 10*F. Highway speed temps will remain about the same in the lower 190's, at least with a 187* thermostat it will. I believe my fan duty cycle table (tuned) starts at 196* at 25% stages up to 214* at max 90%.
i adjusted the fan % and the desired temps and all it did was make the fan work overtime all the time. I figured this wasn't good so I went back to stock until there's a thermostat available. the fans can't get it cooled down enough to turn back off by themselves.
i adjusted the fan % and the desired temps and all it did was make the fan work overtime all the time. I figured this wasn't good so I went back to stock until there's a thermostat available. the fans can't get it cooled down enough to turn back off by themselves.
That was my experience as well. I got tired of hearing the fans on all the time.
i will say this, these cars seem to dyno roughly 10-15 rwhp higher when the coolant temp is down around 190-195... but its only there briefly and gets to 220 very quickly.... not saying running that cool is the best for emissions, but they do make more power... this is my .02 cents based on what have seen on my dyno.
i will say this, these cars seem to dyno roughly 10-15 rwhp higher when the coolant temp is down around 190-195... but its only there briefly and gets to 220 very quickly.... not saying running that cool is the best for emissions, but they do make more power... this is my .02 cents based on what have seen on my dyno.
i adjusted the fan % and the desired temps and all it did was make the fan work overtime all the time. I figured this wasn't good so I went back to stock until there's a thermostat available. the fans can't get it cooled down enough to turn back off by themselves.
Fans are not designed to get ECT down to close the T stat. Radiator air flow and the fans are designed to stabilize ECT above the T-stat opening rate.
Interesting enough, my 08 C6 with reprogrammed fan duty cycle run about 208* F at 65% in city driving. In heavy stop and go hot weather, the temps would creep up to 214* at 90%.
With oem fan settings the ECT would run at 217* in the city at 56% and creep up to 224* at 90% in heavy stop and go and hot weather.
The reprogrammed fan duty cycle on my C6 runs about 9% more in the city and maintains about a 10* cooler city temps. In both scenario's, the fan rate runs about the same %, but only to maintain a higher ECT. No significant differences in highway speeds, both scenario's run about 190* - 196*.
The C7 has a T-stat opening 7* higher than the C6. I don't know what your reprogrammed duty fan cycle rates are, but the higher T-stat must be affecting how the reprogrammed fans are working.
Last edited by Mike's LS3; Jun 26, 2014 at 11:55 AM.
Fans are not designed to get ECT down to close the T stat. Radiator air flow and the fans are designed to stabilize ECT above the T-stat opening rate.
Interesting enough, my 08 C6 with reprogrammed fan duty cycle run about 208* F at 65% in city driving. In heavy stop and go hot weather, the temps would creep up to 214* at 90%.
With oem fan settings the ECT would run at 217* in the city at 56% and creep up to 224* at 90% in heavy stop and go and hot weather.
The reprogrammed fan duty cycle on my C6 runs about 9% more in the city and maintains about a 10* cooler city temps. In both scenario's, the fan rate runs about the same %, but only to maintain a higher ECT. No significant differences in highway speeds, both scenario's run about 190* - 196*.
The C7 has a T-stat opening 7* higher than the C6. I don't know what your reprogrammed duty fan cycle rates are, but the higher T-stat must be affecting how the reprogrammed fans are working.
I agree with you, just saying that a small programming change to the fans basically results in always on vs on when needed because the stock cooling system runs so hot (stat/rad). I had better results in the past with only fan change....so I'll just wait until its all available.
I agree with you, just saying that a small programming change to the fans basically results in always on vs on when needed because the stock cooling system runs so hot (stat/rad). I had better results in the past with only fan change....so I'll just wait until its all available.
Yeah my fan always on. Temps never seem to go under 204°
PCM says it's 194° therm but swear mines is 204°
