Spec C has a teeny weeny bit less lag due to the notch on the hot side, less time to fill with air. Not much else different apart from the wank factor of having a Spec C cooler.

Still crimped at the seams, still same size core.

If you already have GD STI cooler I wouldnt bother getting a Spec C one unless you want to use it for dick measuring.

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500+hp and helis on tap, eta - June 2025.