Modern engines have to hit multiple goals, and some of those goals aren't exactly designed with performance in mind. Higher than optimal running temps being one of them (which was primarily designed for emissions). With years of testing on the road and the track, we've developed the solution to high-temp woes. SPE Motorsport low temp, high flow thermostats.
Designed specifically for each platform, these thermostats all achieve essentially the same thing: they tell your cooling system to wake up earlier and move more coolant so your engine stops living at “factory compromise” temps. Lower operating temps help cut heat soak, keep things more stable under load, and make power feel more consistent when you’re towing, boosting, or doing “just one more pull.” Basically: fewer temperature mood swings, more consistent performance… and less time staring at the gauge like it personally offended you.