just like title says im having a hard time deciding specially since theres not much fcs out there running mid to low 11s . i had a bnr stg 4 turbo already . i had a ebay gt45 last week but wow that was laggy . so now i want togo back to my original plan of a bw s360 . i have a large street port s6 rotor s4 motor with a jdm s5 rear iron . 1600s and 750s etc act ... 16 "hoosiers for tires ... car is a 87 t2 . all full weight no ac no power steering .

 

I vote BW EFR 9180, more injector and FD upper intake manifold on S5 TII lower.

 

Nothing wrong with the old faithful P-Trim / 35R compressor (GT3574, TD61, homemade custom hybrid, whatever you wanna do). Good for a little over 500whp. I still think it's the perfect all-around turbo for 13B's for power/driveability.

My FC on pump, meth injection and similar turbo above (with O-Trim exh, similar but slightly smaller) ran a 8.0 @ 95 mph in the 1/8th @ 15psi with a badly slipping clutch - wouldn't even hold for a burn out - and a terrible >2 second 60'. Never had a chance to track it after I swapped clutches, but it felt a lot stronger. I figure it was around 400 whp give or take (streeported). Spooled at ~3500 RPM IIRC

 

Factory s5 turbo, 58mm or even 60mm high flow wheel with to4b front compressor cover and back cut rear wheel , run a external gate or modify the internal factory ones boost the bitch and have near instant boost as well