imported_MartinGouda

I've just installed a universal AFPR in the car that comes equipped with a gauge to see the fuel pressure level..

my question is, what do you guys set your fuel pressure at on D16Z6 Vtec motors

right now i think it's far too high as the car seems to bog out when the rpms are falling then the msd ignition's anti stall kicks in and keeps it going but before i go and drop the pressure i thought i would ask and see what people typically run around here.

by the way the afpr is a first force and they are really nice parts for the money and with the 1:1 rising rate and such are perfect for boosted applications that are running light management.

zeeman

iTrader: (1)

fuel pressure should be about 44psi (with the vacuum line off).

What is your fuel pressure set at?

LEITNER

i think your good at 34psi at idle

zeeman

iTrader: (1)

i just checked my haynes manual and for the d16z6 its:

with the vacuum line attached....31 to 38psi
with the vacuum line disconnected.....40-47psi

imported_MartinGouda

so something like...43 would be ideal with the vac off and maybe like 35ish on?


right now i'm in the 60's and she's running like **** so i'l try bringing it down

zeeman

iTrader: (1)

oh god, you're poor fuel pump (if its stock).

Bring it down and see how she runs. I normally keep the cars i tune around 44psi (with the line off). But as you can see you have a range that honda specifies as acceptable.

imported_MartinGouda

it's a 255 walbro.... should be ok

imported_MartinGouda

set it on the new afpr, 44 vac off 38 vac on

runs like new, thanks guys

zeeman

iTrader: (1)

cool.
ya, high fuel pressures are only really hard on a stock fuel pump.

imported_plzbeleiveit

vacum line off? whys that?

zeeman

iTrader: (1)

thats so its seeing atmospheric pressure.

Eurotuner00

what woudl be a good fuled pressure for a B16 mine is like 35-44 psi with the vaccum line connected is that fine or no???

zeeman

iTrader: (1)

35 with the vacuum line attached is fine

zeeman

iTrader: (1)

as per my haynes:

b16
attached....30-37psi
disconnected....40-47psi

b20
1997-98
attached.....30-37psi
disconnected.....38-46psi
1999 and later
attached.....31-38psi
disconnected.....40-47psi

b18b1
attached.....31-36psi
disconnected....40-47psi

b18c1 and b18c5
attached.....38-46psi
disconnected.....47-55psi

Eurotuner00

thx for the help zeeman

Eg6turbo

Just change my fuel from wabro 255 to walbro 450 and now my.fuel pressure reading 60 psi and try to adjust it and it not moving what I should change fuel pressure regulator