SR20 General qeustions help me plz.. - Zilvia.net Forums | Nissan 240SX (Silvia) and Z (Fairlady) Car Forum

s13dan · 02-21-2005, 12:21 AM

OK if i have an AFC and a 255 fuel pump do i need a fuel pressure regulator for anything? would i need to turn down my fuel pressure, because im still hitting fuel cut at 12psi (T25),And i was wondering if there is ANY stock injectors that i can pull from any car here in america that i can put into my redtop as an upgrades? supra injectors? and one more thing I want to upgrade my MAFS to a Z32 does the MAF have to be from a TT or can it be from a N/A Z32???

all help will be greatly apreciated..

Campos · 02-21-2005, 12:38 AM

naa you dont need fpr, and you can use tt or na z32 maf, they are the same, but your ecu has to be tuned for it. what do you mean by hittin fuel cut?

s13dan · 02-21-2005, 02:05 PM

When i run 12 or more psi that car will buck and sputter around 4,500 rpm it always does it in first, sometimes in second and if i ease into third never... it is boost spiking but i have heard of people with my same mods running full boost from there t25's.. i have a front mount, exhaust, fuel pump,intake,old school AFC, turbo XS manual boost controller, new 300zx fuel filter, 240sx MAF, so i dunno what to do..

Steeles · 02-21-2005, 02:55 PM

check your spark plugs and gaps. how do they look and what are they gapped at?

g2ic02 · 03-02-2005, 10:35 AM

could you be leaning it out too much with your afc??? But i would also check your plug gap.

timmybgood · 03-02-2005, 10:58 AM

maybe the factory boost cut solenoid is doing its job? don't SR's have those? when i got mine it had some doohickey on it that looked like it, so i took it off.

trixxxr4_kids · 03-12-2005, 03:45 AM

what good is a fuel pressure regulator gonna do if the fuel cut defender will still do its job? if you want pinch your fuel feed line or your fuel return pinch the fuel feed if your rich

02-21-2005, 12:21 AM	#1
s13dan Zilvia FREAK! Join Date: Aug 2003 Location: Springfield, Mo Posts: 1,519 Trader Rating: (2) Feedback Score: 2 reviews	SR20 General qeustions help me plz.. OK if i have an AFC and a 255 fuel pump do i need a fuel pressure regulator for anything? would i need to turn down my fuel pressure, because im still hitting fuel cut at 12psi (T25),And i was wondering if there is ANY stock injectors that i can pull from any car here in america that i can put into my redtop as an upgrades? supra injectors? and one more thing I want to upgrade my MAFS to a Z32 does the MAF have to be from a TT or can it be from a N/A Z32??? all help will be greatly apreciated.. __________________ 89 240sx hatch #933-the hot rod 91 240sx coupe #131,603-the daily

02-21-2005, 12:38 AM	#2
Campos Zilvia Addict Join Date: Jan 2005 Location: southeast tx Age: 37 Posts: 659 Trader Rating: (2) Feedback Score: 2 reviews	naa you dont need fpr, and you can use tt or na z32 maf, they are the same, but your ecu has to be tuned for it. what do you mean by hittin fuel cut? __________________ Parting out SR build....

02-21-2005, 02:05 PM	#3
s13dan Zilvia FREAK! Join Date: Aug 2003 Location: Springfield, Mo Posts: 1,519 Trader Rating: (2) Feedback Score: 2 reviews	When i run 12 or more psi that car will buck and sputter around 4,500 rpm it always does it in first, sometimes in second and if i ease into third never... it is boost spiking but i have heard of people with my same mods running full boost from there t25's.. i have a front mount, exhaust, fuel pump,intake,old school AFC, turbo XS manual boost controller, new 300zx fuel filter, 240sx MAF, so i dunno what to do.. __________________ 89 240sx hatch #933-the hot rod 91 240sx coupe #131,603-the daily

02-21-2005, 02:55 PM	#4
Steeles Post Whore! Join Date: Sep 2002 Location: 7th layer of hell, special pit of anger Age: 45 Posts: 3,785 Trader Rating: (0) Feedback Score: 0 reviews	check your spark plugs and gaps. how do they look and what are they gapped at? __________________ Keeping it Godzira bishes. So I murdered another turbo

03-02-2005, 10:58 AM	#6
timmybgood Zilvia Member Join Date: Mar 2003 Location: central ohio Age: 37 Posts: 229 Trader Rating: (0) Feedback Score: 0 reviews	maybe the factory boost cut solenoid is doing its job? don't SR's have those? when i got mine it had some doohickey on it that looked like it, so i took it off. __________________ 1995 SE

03-02-2005, 10:35 AM	#5
g2ic02 Zilvia Junkie Join Date: Jul 2003 Location: minnesota Posts: 480 Trader Rating: (3) Feedback Score: 3 reviews	could you be leaning it out too much with your afc??? But i would also check your plug gap.

03-12-2005, 03:45 AM	#7
trixxxr4_kids BANNED Join Date: May 2003 Location: san diego Posts: 56 Trader Rating: (0) Feedback Score: 0 reviews	what good is a fuel pressure regulator gonna do if the fuel cut defender will still do its job? if you want pinch your fuel feed line or your fuel return pinch the fuel feed if your rich

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