Quote:
Originally Posted by 2018zl1-1le
So which is better to monitor IAT.2 or 3, which temp actually pulls timing when it’s over 140*?
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I monitor both. Tracking / logging IAT.2 will give you the real world data on effectiveness of your HX cooling system. Like in your case, before and after cooling / performance mods.
I also track / log IAT.3's because thats the number used in your IAT vs. Timing table... and although it is a calculated number, it is the number that will determine your timing or lack their of.
The stock tune starts to pull timing at 133F.
I know many tuners will raise that ceiling, especially when the car is using E85. If your car is tuned, I'd check that table to see what it is for you, and that way you can track it for awareness purposes.
That said, it's ok if your IAT.3's are higher than that... but if you were racing then you would at least know where you are at in the cooling process. Would love for one of our tuners to chime in to add or subtract from my current understanding.
Which is why I often say that the
Banks iDash is the BEST first mod for the ZL1, because you get that critical data, along with a dozen other amazing features.
Hope that helped, and good luck in your efforts to go faster and stay cooler
