who is using the cosworth crank scraper?? how do you think it performs?? is it more of a "hurt" or "help" thing?? im building my motor and wanted to see what people say about it

 

They just came out in I believe September, and I have one. I had AMS add it to my last engine build. From research it looks like a good preventative measure. There are plenty of fast cars without them, but for the $55 that it costs it gives a little piece of mind.