C4 Corvette How-To: Free Fuel Pressure Increase

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This modification was performed on an 87 Vette with approx. 100K on the odometer, a gutted MAF, a K & N air filter, Jacobs 8.5mm plugs wires and Delco sparks that are 2 heat ranges hotter than stock.

I tried this modification and my fuel pressure went from 30# to 40# with only this fifteen second mod. The modification is that I removed the vacuum line from the factory fuel pressure regulator.

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This detailed how-to guide includes complete instructions for this simple fuel pressure modification, including:

✓ Complete modification procedure
✓ Real-world performance results
✓ Fuel economy improvements
✓ Temperature changes observed
✓ Safety considerations
✓ Fine-tuning recommendations

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