spacetuna

1991 Integra LS
B16
T3/T4B
Vafc
Inline fuel pump
450CC DSM's
Fuel Rail
FMU 12:1
Sleeved
Rods
Pistons
Intake Manifold
valves/valve springs/retainers
Bronze valve guides
Block guard
Stock Compression
How much boost is possible on this setup?

B18c1turboedEK

iTrader: (1)

IF your block has all that the skys the limit.....I would say 20 plus...

liam821

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Koticcivic4u &raquo;</TD></TR><TR><TD CLASS="quote">IF your block has all that the skys the limit.....I would say 20 plus...</TD></TR></TABLE>

uhhh nnooooo. Lets see 12:1 fmu at 20psi of boost, thats 12psi per 1psi of boost so 20x12=240 plus the base 40psi...so yea... 280psi of fuel pressure. NICE

I wouldnt run over 10psi with a FMU its just wrong.

You spent all that money on a nice block and turbo setup...spend another $400 and get a hondata (or whatever you fancy)!! Fuel management is key in a happy turbo honda period.

liam

spacetuna

Couldn't I trim that with the VAFC?? Don't understand the fuel part too well.

And I have a preobd engine so I would have to swap distributor and ecu too wouldn't I?? That knocks it up too a grand + with tuning.

spacetuna

What did people do that wanted to run higher boost than 10psi do before hondata??

B18c1turboedEK

iTrader: (1)

My bad didnt see he was running an FMU, man trust me Hondata s200 with BOOST and youll be very happy...

liam821

Checkout http://www.zdyne.com/, they have an obd0 boost friendly ecu.

And before a hondata/zdyne etc, they used aftermarket ecus like a speedpro, haltech, tec, etc

liam

spacetuna

I know but after spending all that jack another grand's gonna hurt me. Would I have to switch distributor and ecu for hondata s200????

liam821

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by spacetuna &raquo;</TD></TR><TR><TD CLASS="quote">Couldn't I trim that with the VAFC?? Don't understand the fuel part too well.

And I have a preobd engine so I would have to swap distributor and ecu too wouldn't I?? That knocks it up too a grand + with tuning. </TD></TR></TABLE>

12:1 is a static 12:1 ratio fuel pressure raiser. They cant be adjusted with vafc. However total fuel into the engine can be played with...but its gonna be pretty ruff tuning. Thats why i recommend not going over 10psi with a fmu..its just not very good fuel control.

liam

spacetuna

Thanks for the link... What would I get rid of if I used an programmed ecu?? The FMU and the Vafc? Could I use the DSM injectors?

mos

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by spacetuna &raquo;</TD></TR><TR><TD CLASS="quote">Thanks for the link... What would I get rid of if I used an programmed ecu?? The FMU and the Vafc? Could I use the DSM injectors?</TD></TR></TABLE>

Ya. Either way you're gonna need larger injectors than stock to run 20psi.

liam821

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by mos &raquo;</TD></TR><TR><TD CLASS="quote">

Ya. Either way you're gonna need larger injectors than stock to run 20psi.</TD></TR></TABLE>

PM-Performance

anyone else notice he has sleeves and a blockgaurd?

b20turboic

i run zdyne gold in my turbo b20 unsleeved and its fine ... worth all the money for us 88-91 guys

spacetuna

Cool, I'll look into the Zdyne. What was the total cost??

The blockguard is currently on my motor and I'm adding the sleeves, rods, pistons. Forgot to take it off.

FlySi

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by spacetuna &raquo;</TD></TR><TR><TD CLASS="quote">What did people do that wanted to run higher boost than 10psi do before hondata??</TD></TR></TABLE>

speedpro

spacetuna

Is there anyway to run boost higher than 10psi with the vafc and DSM injectors?? Could I use check valves or a GM sensor to trick the computer???

b18b98

Talk to jinxproof or autoexturbo. They both ran that setup pushing close to 1 bar.