Tuning is going alright. I hear ya on the tuning. I'm used to tuning Hondas on obd1 and this is way more difficult. I'm using the 42s still and a t3 with a t31 exhaust housing. It's about 46 trim. It spools real quick but doesn't have the power I want. I think ill go with a 54 or 57 trim and 60#ers if I don't get the power I want out of e85 with a few more psi. I did recently run my wastegate dump external and that helped a bit too.