T-stat install.....WTF is going on?
Tech Contributor
Joined: Mar 2003
Posts: 12,094
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From: Colorado Springs, CO
St. Jude Donor '08-'09-'10-'11
A little tuning fact for those interested in such things:
EFIlive has a fan patch that can make the fans come on earlier than the HPtuners 192 degree point. If you put in a higher speed at 192 and up it will run much cooler. I dont think I ever see over 205-210 in the summer driving hard; otherwise its mid 190's.
EFIlive has a fan patch that can make the fans come on earlier than the HPtuners 192 degree point. If you put in a higher speed at 192 and up it will run much cooler. I dont think I ever see over 205-210 in the summer driving hard; otherwise its mid 190's.
Drifting
Joined: Jun 2007
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From: Middletown DE
Pro
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BRian
Le Mans Master
Joined: Aug 2004
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From: Monroe Township New Jersey
St. Jude Donor '05-'06-'07-'08-'09-'10-'11-'12-'13-'14-'15-'16
St. Jude donor in memory of jpee '14
No, the T stat is NOT needed at all with tunning. If you do both, its a waste of time and money. Like I said before, I do not have a T stat at all, before and after my blower install. I did have the car tuned from when it was stock and after the blower, and the car never gets over 200* at idle or ever, and I cruise in the low 190*s all day. Trust me, the change to the tune to make the fans come on at full blast and at a much lower temp is all you need. My car is proof. Also, you dont want your car constantly running cool like in the 160-180 range because its not getting to its full running temp.
BRian
BRian
Changing them both will allow the fan to come on less frequently.
With regard to operating temp, there seems to be a sweet spot of approximately 180 degrees for both oil and coolant to run the fastest elasped times.
I rather not get into a long discussion regarding operating temps but FI cars do not like heat. A lot of tuners tune them fat, utilizing the gasoline as a coolant, most recommend a larger capacity radiator with improvements to the cooling system to control detonation. Intercoolers, reduced timing and etc are only part of being proactive in keeping your FI motor happy
Team Owner
Joined: Feb 2001
Posts: 27,254
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From: Short Hills, NJ
No, the T stat is NOT needed at all with tunning. If you do both, its a waste of time and money. Like I said before, I do not have a T stat at all, before and after my blower install. I did have the car tuned from when it was stock and after the blower, and the car never gets over 200* at idle or ever, and I cruise in the low 190*s all day. Trust me, the change to the tune to make the fans come on at full blast and at a much lower temp is all you need. My car is proof. Also, you dont want your car constantly running cool like in the 160-180 range because its not getting to its full running temp.
...but I can assure you that the thermostat alone will yield more gains than simply 'the programming of the fans' alone will. Ideally one would want both for maximum performance gains of course.While certainly better than 220+ degrees, 190-200 degrees is still not the optimal coolant temp for maximum performance, this has been proven on both a dyno and more importantly at the track time and again.
