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Seen a mention of this in another thread that went off topic. I want to stay on something specific so I’m starting a new

I track in the hot Florida summer. I consistently hit 240 degree on track. I haven’t tuned the car yet , and now I’m wondering if I should. One poster of this past thread said he is removing the tune for heat management reason. He states , and I agree, any more hp over stock isn’t a benefit around town.

Question and concern is this : I’m not comfortable running much higher than 240 on oil temperature. To those of you who really run hard on track with a tune ( APR , Cobb ). Are your temperatures manageable ? I realize increased heat is a byproduct of performane , but what is the tipping point ? This only applies for track use. Spirited driving around town doesn’t play into this. Thanks to anyone who has input on this.
 

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You have a S? If so, do you have the 3rd radiator?
 

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No 3rd radiator. Water temperature is never an issue. Only the oil Mid 90 degree outside temperature. Fry an egg tarmac temp
 

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No 3rd radiator. Water temperature is never an issue. Only the oil Mid 90 degree outside temperature. Fry an egg tarmac temp
I don't know the answer to the question but "Mid 90" is just warm, not hot. I've been 'sporty' driving in 44°C (111°F).😊
 

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From what i remember the third rad is mandatory in hotter countries like Saudi, Bahrain and such.
90F would be like winters day over there.
 

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Why is a 3rd radiator being talked about when I’ve mentioned that I don’t have a water temp concern. This is about oil temp. The oil cooler sits on top of the engine. Am I missing something here ?
 

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Why is a 3rd radiator being talked about when I’ve mentioned that I don’t have a water temp concern. This is about oil temp. The oil cooler sits on top of the engine. Am I missing something here ?
Although you don’t have an issue with water temp, removing more heat from the engine vía a third radiator would translate as less heat available to your lubrication system in turn lowering the max oil temperature. Also investigate if your oil temp sensor is good.
You’re right that a tune will increase the amount of heat generated by the engine
 

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I don't know the answer to the question but "Mid 90" is just warm, not hot. I've been 'sporty' driving in 44°C (111°F).😊
Here in Florida we have extremely high humidity. You literally feel saturated outside. So while the temp may only be in the 90s, the "feels like" temp is well north of 100.
 

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I have a tune and though I have not tracked, I have been frisky with the go peddle. After my APR tune I noticed LOWER oil temps in sport or sport plus.

Don’t know why, just reporting the facts.
 

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Actually, more humid air has greater capacity to carry away heat.
Say a liquid boils at 115F.

If the temperature is 110F the liquid is not going to evaporate because 'it feels like 125F'. It will evaporate slowly due to dew point being lower than 110F but not because 'it feels like...'

On the other hand, if there is an extreme liquid with a dew point of 112F and boiling point at 115F it is not even going to evaporate.
 

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I have a tune and though I have not tracked, I have been frisky with the go peddle. After my APR tune I noticed LOWER oil temps in sport or sport plus.

Don’t know why, just reporting the facts.
This was my experience with the APR tune on the road as well. But on track it wasn't able to sustain these lower temps.
 

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This was my experience with the APR tune on the road as well. But on track it wasn't able to sustain these lower temps.
what temps were you seeing and after how long on track? Do you have the third radiator added?
 

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Here is an excerpt from a 718 Boxster/S service information publication for MY17. It may be helpful in discussions of these systems, especially these pages which show the system diagrams for the high temp (radiators, etc.) and low temp (charge air, etc.) cooling circuits. High temp cooling lines route directly to the turbo charger while the low temp circuit runs to the intercooler and affects charge air (intake) temperature that is routed to the turbocharger, so from a high level examination, it appears can both effect turbo temps. Edit: But, charge air directly related to power production rather than turbo cooling.
 

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