Mine worked for a little while when I first got the car, then after an OTAU it began to work intermittently... which is really bad because I'd downshift and quickly let off the clutch expecting a rev match and instead I get my eyeballs yoinked out of my skull.
So I went back to blipping for...
I was told by a dealership owner that if you start burning them up, you'll get a CEL and in order for the warranty to be covered you MUST shut it down immediately and have it towed.
The smartest thing you can do if you do nothing else is remove them and stick some defoulers in there. So long as...
My '20 GT literally spoke to me when I turned it on the first couple times after buying it, then never again. It was telling me stupid stuff like to remember to wear my seat belt, but it talked! Must have been some sort of in-transit/demo mode or something?