turbo engine tuning secrets -
featuring original research

By Josh Straub, 2009


Key Ingredients to a Fast Truck

Syclone Modification Stages

Stage 1:
How to Get a Stock Truck Deep in the 13's

Tuner's Guide to DataMaster

Real World Tuning Example:
Vortec/PT67GTQ Syclone on C16

Performance Roadmap: Syclone 4.3L Turbo V6

3 Bar Chip Tunes for Download

My 1991 Syclone

11.45 @ 117 Budget Build Spreadsheet

Vortec Heads Budget Spreadsheet

Racing Videos

Turbo Grand Prix

My 1990 TGP


Unfreezing Frozen Windows Applications

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1990 Pontiac Turbo Grand Prix

Performance Statistics
    GT2871R Turbo: (installed June 2006)
  • new quarter mile times coming.. DataMaster predicts very low 14s near 100 MPH at 15 PSI
  • Estimated 350 HP, 450 LB-FT torque
    Stock T25 Turbo:
  • 14.7 @ 93 MPH at 11-12 PSI, turbo maxed out
  • Estimated 280 HP, 350 LB-FT torque

  • Factory 2-bolt stock "LG5" 3.1L 60* V6 motor, 206,000mi (May. 2009)
  • Stock aluminum canted-valve cylinder heads

  • Garrett GT2871R 53mm Turbo upgrade, .86 A/R turbine, 475 HP-capable
  • GM LS1 beehive valve springs
  • 28# Fuel Injectors (from stock Syclone application)
  • Moates Ostrich real-time chip emulator, TunerPro chip tuning software (retuned by me for the 28# injectors)
  • PLX M-300 Wideband O2
  • "Fully" performance built stock 4T60 overdrive transmission, stock 2000 RPM stall converter
  • Aftermarket upgraded flex-joint Exhaust Crossover Pipe
  • BoostValve manual boost controller

2008-2009 Josh Straub Home | Syclone | Turbo Grand Prix | Computing | Contact
  Last Modified: Thursday, 25-Jun-2009 20:07:51 UTC