The impala fouled all of the plugs, but they said it was only running on 6 cylinders on the only run it did. This was from the Dynomax guys who run the dyno. They said the plugs were fouled so bad, he didn’t want to risk anything. Kinda sux for him, as he towed it from Florida to Memphis for one dyno run. I would have liked to see it on the juice. The Dynomax guys said the owner was expecting more than 1000 rwhp out of it.