To throw another turbo into the mix, we are currently testing our twin scroll turbo kit's using Lancer Evolution turbos, specially prepped by FP for us, and one of the turbo's we plan to test in the near future is this twin scroll 68hta turbo....
This turbo will be avaialable with 9, 9.8 or 10.5 cm housings and currently we tested our 2.5 liter header/uppipe setup on my stock longblock 2.0 liter with the largest of our header primary diameters, Evo 9 turbo with a 9 cm housing, IWG, a mild tune and pump gas, it made the graph shown in post #19. The car feels great and there's alot more left in it even on pump gas.
The next turbo we will test will be the Evo 6.5 RS TME.....
It should move the tq curve left and it should hold power all the way to redline like the other turbo, and we feel this will be a better match for the ej20.
Just something for you guys to think about.