Many times, there is nothing of the sort worth debating, I mention it in the pre turbo thread in detail, best you read up there. I'm sure in a weak as piss cast alloy thin edge turbo you will see some wear after a while, but its going to be of no consequence compared to the wear and damage caused to your rotary engine not running water injection LOL. I have never seen any turbo ever "break" from running pre turbo, I have seen some wear, and I have seen others not show one sign of any wear at all after 100lt of use! End of the day its a non issue, and for the proven gains you get running it, well I'll let you make up your own mind
I have so many drag race customers who run it and not one has ever complained or raised it as an issue worth ringing or typing an E-Mail over. Most of these are pure methanol runners too, who use it to extend the range of their turbo to beat others who have no idea
