Just installed one over the last two days. (Spruce thermocouple / VDO Cockpit, that is)
The response is FAST!
(drops about 200-300 in between shifts)
and responds to the slightest throttle input.
If I can make a suggestion,
Jarvis Cutting Tools makes a tap that cuts through cast like butter.
I spent 3 hours with an older (but high quality) tap, and when it broke, bought a brand new set from Harbor Freight.
I moved more material in 5 minutes with the new Jarvis tap than hours with the other two.
Whatever it costs (I dont know: gift from a friend) it is worth every penny.
With this you could easily tap it on the car!
Other than that,
no worries at all!
-Brad