I really like index racing as I have been running it for about 12 years now. I really like the pro tree ( I was runner up at a pro tree race a few weeks ago and went rounds just yesterday ) I tried the E.T.Genie as well as the Willys adjustable restrictor plate and found in my application it killed too much mph for my liking and I end up going back to my “ bolt system ). I am slowing down from 10.90 / 11.00s to 11.50s , with my other motor I was slowing from 10.60s to 11.50s. Keep in mind weather conditions affect how your stop is to be set. On my set up my secondaries are barely opening and disconnecting the secondaries slowed me to much. I m running 11.50s at 115 with 60 fts 1.48 - 1.52 shallow on the stop .Leaving at 2,000. . I deep stage on a pro tree so I am actually set up for 11.40s due to deep staging. I am no expert but the car has Won two track championships with my setup. I believe the e t genie is no longer being made or available but there is a guy in Pa making a similar set up called the “ Marko System “. I have also heard of the adjustments on the Willys plate moving because the adjusting system vibrates and moves resulting in needing a way to secure the adjustments better. BTW you don’t remove the restrictor plate itself you simply remove or replace plates in the set up
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