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08-08-2016, 06:21 AM #1
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1993 - Adjustable Fuel Pressure Regulater Needed
I know that the 1993 fuel rails are different from other years, so is there an adjustable fuel pressure regulator that will work on it?
I currently have a 52 t/b and a set of 30 lbs injectors that I will be installing when I finish rebuilding my motor.
Thanks
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08-08-2016, 08:43 AM #2
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Why do you want to adjust the fuel pressure?
SOLD - GONE TO A (VERY) GOOD HOME ! - 94 Formula A3+1: 381ci forged stroker - Callies Stealth, Oliver 5.85 billet rods, BME nitrous pistons / CNC LT4 heads / CC solid roller / TH400+GearVendors OD / 4.11 Strange 12-bolt / 300-shot N2O / Spohn Suspension / roll bar / MoTeC M48 Pro engine management system /a few other odds 'n ends.
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08-08-2016, 09:12 AM #3
Long Live the Opti
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As Fred said, why? You shouldn't need to make any pressure adjustements. Forced induction is a different story, but for NA, a stock one will work fine.
Originally Posted by Ryan Stout
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08-08-2016, 12:03 PM #4
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Even forced induction it's not necessary. Factory fpr raises 1:1. Unless you're trying to offset not having enough pump.
I wouldn't touch fuel pressure
Sent from my SAMSUNG-SM-G935A using Tapatalk1994 Firebird Formula 381 stroker - Carrying the torch! - 9.64 @ 139.4mph
1994 Camaro Vert - SBE LE1 Summit 8802 Cam - The Cruiser
1995 Firebird Formula - Dark Aqua Metallic - maybe restore?
The wrench/driver for LTConvert's 94 Z28- Ellwein 383/LE Trickflows/ D1SC / CPT Ultra Pro Race 4L60E/Holley Terminator EFI
10.78 @ 125mph. Shooting for 9.99 for Frank Cahall!
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08-08-2016, 08:26 PM #5
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With those mods you don't need a different fuel pressure regulater. Stock will work.
I have a 93 too.
Fastbird had a 93 and is very knowledgeable about our years.93 Z28, 383, PI 3200, Strange 12 bolt, 3.73, Strange coilovers, suspension, and going 24X... for three years or so.
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08-09-2016, 03:22 AM #6
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Good to know... just saves me some cash for other parts.
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08-09-2016, 05:48 AM #7
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I had to adjust mine. Originally Posted by SSlowBoat
Granted, I was running BIG low impedance injectors, and had trouble with getting a clean idle to the point of backing pressure down AND pulling the BPW down from 1.0 to 0.8 milliseconds. But you're exactly right. The factory regulator is a 1:1 pressure rise (as is on the return style railed LS stuff too, I was running a factory rail/regulator on my Vette and may move back to that even) and unless it's a situation where the injectors are simply too large to control adequately via tuning, you should NOT have to touch it.
Originally Posted by Ryan Stout
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08-09-2016, 07:25 AM #8
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Precisely Originally Posted by Fastbird
I had to adjust mine. Granted, I was running BIG low impedance injectors, and had trouble with getting a clean idle to the point of backing pressure down AND pulling the BPW down from 1.0 to 0.8 milliseconds. But you're exactly right. The factory regulator is a 1:1 pressure rise (as is on the return style railed LS stuff too, I was running a factory rail/regulator on my Vette and may move back to that even) and unless it's a situation where the injectors are simply too large to control adequately via tuning, you should NOT have to touch it.
Sent from my SAMSUNG-SM-G935A using Tapatalk1994 Firebird Formula 381 stroker - Carrying the torch! - 9.64 @ 139.4mph
1994 Camaro Vert - SBE LE1 Summit 8802 Cam - The Cruiser
1995 Firebird Formula - Dark Aqua Metallic - maybe restore?
The wrench/driver for LTConvert's 94 Z28- Ellwein 383/LE Trickflows/ D1SC / CPT Ultra Pro Race 4L60E/Holley Terminator EFI
10.78 @ 125mph. Shooting for 9.99 for Frank Cahall!
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08-09-2016, 08:02 AM #9
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Unless you are a cool kid with enough pump to run high rail pressure like LSX kids.
Correlation does not imply causation.
Una salus victis nullam sperare salutem
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