HPI Performance Tech Center

What Fuel Pressure Should an LS Run? Complete Guide for Stock, Turbo & E85 Builds

Posted by donald blatz on

What Fuel Pressure Should an LS Run? Complete Guide for Stock, Turbo & E85 Builds

Learn the correct LS fuel pressure for stock, turbo, supercharged, and E85 builds. Understand 43.5 vs 58 PSI, boost-referenced pressure, injectors, and common fuel-pressure problems.

Read more →

What Size Fuel Injectors Do I Need for a Turbo LS? Complete Horsepower & E85 Guide

Posted by donald blatz on

What Size Fuel Injectors Do I Need for a Turbo LS? Complete Horsepower & E85 Guide

Learn what size fuel injectors you need for a turbo LS based on horsepower, gasoline vs E85, boost, fuel pressure, and duty cycle. Includes injector sizing examples.

Read more →

Why Won’t My LS Swap Start? 10 Wiring and Fuel Problems to Check First

Posted by donald blatz on

Why Won’t My LS Swap Start? 10 Wiring and Fuel Problems to Check First

LS swap cranks but won’t start? Check these 10 common LS swap no-start problems involving wiring, grounds, fuel pressure, injectors, sensors, ECU power, security, and tuning.

Read more →

How Much Horsepower Can Your Fuel Injectors Support? Complete Injector HP Guide

Posted by donald blatz on

How Much Horsepower Can Your Fuel Injectors Support? Complete Injector HP Guide

Learn how much horsepower fuel injectors can support based on injector size, gasoline vs E85, boost, fuel pressure, and duty cycle. Find the right injectors for your build.

Read more →

Fuel Injector Duty Cycle Explained | When Are Your Injectors Too Small?

Posted by donald blatz on

Fuel Injector Duty Cycle Explained | When Are Your Injectors Too Small?

Learn what fuel injector duty cycle means, how to calculate it, why 80-85% is considered safe, and how to know when it's time to upgrade your injectors for turbo, supercharged, E85, or naturally aspirated builds.

Read more →