luckythirteen13

i think its about time i buy a fuel pressure regulator. below are my mods, what pressure do you guys think i should try first? also, sense i dont have my own dyno can i rely on plug color to tell if im lean or rich? white for lean and black for rich right?
removed the air silencer
K&N air filter
C&L 76mm MAF sensor
Professional Products 70mm throutle body
Professional Products 70mm EGR spacer
Professional Products intake manifold (upper and lower)
Mac equal length shorty headers
Summit Racing catless H-pipe
Flowmaster-Delta Flow mufflers (with dumps)
aluminum underdrive pulleys (powder coated black)
Venom 400 performace modual
Autolite platnum spark plugs
Mr. Gasket high flow 180 degree thermostat
electric radiator fan
MSD 8.5mm super conductor spark plug wires
MSD Blaster 2 (45,000volt) ignition coil
MSD 6AL ignion box
advanced timing to 14 degrees
Powerslot slotted rotors
Hawk Racing performance pads
custom shift kit
high stall torque converter
B&M transmission cooler
AFR 165 aluminum heads
Scorpion aluminum roller rockers
hardened push rods
Ford Racing 24# injectors
Trickflow 3/8" heat spacer
UMI rear upper control arms
Mega Bite Jr rear lower control arms
adjustable pinion snubber
weld in sub-frame connectors with seat support
Ford Racing 3.73:1 gears
Ford Racing 31 spline limited slip differencial
Moser 31 spline hardened axels
Torque link
smog pump bypassed
egr valve coolant lines bypassed

stanglx2002

Yes you do need one and with those 24's in there the psi should be at about 38.

sastangman

you should have had one when you put the afr's in

stanglx2002

i agree and also get 1 with a gauge. They sell 1 on eBay for $100

luckythirteen13

stang, isnt stock fuel pressure 38psi? how would adjusting it to 38 effect anything?

stanglx2002

bc you have 24# injectors in there they flow a lot more fuel then 19's so you dont need as much fuel psi

luckythirteen13

the maf is recalibrated for the 24ers. what im saying is i dont see a difference between 38psi and 38psi

you said to set it to 38, if stock is 38 then what is the difference?

stanglx2002

all increasing the psi does is increase the amount of fuel the injectors are spraying and the only way to get the right amount of psi is a dyno tune