Interesting.. I am getting very tempted to just get a 3" catless DP and PLog and see how far I can get with that setup. How hard is it to switch these over to E85? I have been thinking about that route on and off..
If you can use E85 the better question why are you not!?? Yes its well worth it! 3.4 and pump vs 2.8 on E85 is worth about 60 HP on my car.