Quote:
Originally Posted by Ghostvette
While downshifting a 7AT might sound cool, it seems to me to be kind of hazardous to the engine. Pick the wrong one and engine goes boom.  ... |
I'm not 100% certain but I don't think the TCM will let you downshift if it would take the engine RPMs too high.
On older cars, yes, downshifting a lot could cause extra wear and tear. With a TCM protecting the trans, the throttle blip, plus VVEL reducing compression, it shouldn't be a big deal. I'm sure there is still a tad more wear but not enough to worry about. YMMV