[wutangclan]

I wanna know when my car has warmed up properly so I can start thrashing it. Forget rules of thumb like "wait ten mins".

What's the least expensive device that will let me see the coolant temp? Scangauge is overkill for me, perhaps a wireless OBD dongle paired with an iPhone app would be ideal, but there's so many out there that I dunno where to start looking.

Any ideas?