stockhatch

iTrader: (12)

I really did search. :P I figured this would have been covered ad nauseam, but I found little to nothing.

Anywho, I am working on a single upgrade on my 1jz and the money has dried out for now, so fuel is not an immediate option. I do have an uprated fuel pump, so I should be able to support at least stock twin bpu numbers.

The question is, how will the car behave if I target 10 psi? I know 10psi from an 83-75 != 10 psi from CT12As, but in reality, will it be enough of a difference to cause issues? My gut feeling is that I should be fine at that boost level, but if anyone has actually done this and wants to chime in, I would appreciate it.

Single conversion consists of:

cxracing twin scroll manifold
83-75 s300sx 60mm with .91 AR twin scroll hot side
TR8 FMIC rated at ~500hp
knockoff TIAL 50mm BOV

School me my budget-conscious 1jz peeps!

Vrank

iTrader: (4)

Why'd you go so big on the exh housing? Planning for e85 later? Gfs holset is around 60mm, ran 13psi no problem. 10 will be absolutely fine. If you don't have a wideband, I'd leave it there. Assuming what you're really missing is an safc? Because 440s go for super cheap, but no fuel controller for them sucks. Fwiw I spent right at $100 for both a set of 440s and an hks safr.

stockhatch

iTrader: (12)

Took a WAG on the housing and quicksc4 (Omar) recommended it. From what I read, it should spool as fast as or slightly faster than the open .88 AR without choking it up top. Also, to go any smaller than the .88, I would have to drop to a T3 flange, which I did not want to do. Not many housing options for an 83-75, but we will see how this thing behaves

I have been looking for some 440s, but they seem to have dried up here lately. I would also have to source some sort of piggyback I guess. What I would rather do is wait and do some 650s and a standalone.

I'm ultimately looking for AROUND 500hp, as that will max my FMIC, and hopefully keep my clutch happy.

Thanks for the advice, at any rate I think I will put a light spring in and use a boost controller to creep up until I find my fueling limits.