Quote Originally Posted by Schroeder View Post
I've always heard that the readings aren't as accurate if taken from the Tail pipe. Seeing as the exhaust goes through a muffler and Cat if installed. Now would it matter for his setup? More than likely no.
i have seen many 500 600 and 700whp cars dyno'd with tail pipe WB its only roughly 100-200 rpms if that delayed on reading. and maybe .1-.2 AFR leaner. but usually its whatever your tuner is comfortable with.