TPI Tuned Port Injection discussion and questions. LB9 and L98 tech, porting, tuning, and bolt-on aftermarket products.
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Old Dec 20, 2003 | 10:15 AM
  #1  
Mkos1980's Avatar
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From: Macedonia ,OH
Car: Formula
Engine: 6.0 LSX
Transmission: 4L60E
Axle/Gears: 9 Bolt 3:27
Stock TPI FP

We put a 89 350 tpi in my GF's V6 car and installed my old pump out of my Formula in her car and were getting about 40PSI with ignition on. Sound about right?
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Old Dec 20, 2003 | 12:23 PM
  #2  
TPI-Formula350-'s Avatar
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From: Long Island New York
Car: 89 Formula 350
Engine: Forged 385 H/C/I
Transmission: 700R4-4300 Stall-lockup
Axle/Gears: BW 9 Bolt 3:70
the stock fuel pressure on my 89 formula 350 was 44
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Old Dec 20, 2003 | 08:33 PM
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vwdave's Avatar
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From: miami, florida
Mine says 45 with just the ignition on, 42 while running, and jumps to 50 with mild acceleration.

That sound right to you guys?
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