Anyone try Thompson powerblast plate

I bought em after having a couple few too many beers one night and after arrival I put them on the mildest motored car in the stable, 65' Cuda (318' w/ 650 cfm Holley and mild cam), from about all I could tell they made more noise. I mean you can see the fuel atomizing differently off the plates but when romping on it I didn't detect any noticeable difference in performance and they actually caused a bit of a stumble. Since the 65' in my avatar is just my sometimes putt around town car I don't like effing with it much since my other High Performance rides keep me busy enough.

Save your $$$ ...