Archives: naturally aspirated

Fuel Injection Tuning Established by Racing Class Rules

Mechanical fuel injection (MFI) is the standard in many racing categories such as drag racing, circle racing, high speed events, and slalum. All of these have restrictive rules that affect MFI setup & tuning. Top Fuel, Top Alcohol, ProMod, and several Nostalgia racing categories are examples in drag racing.  MFI provides the ability to modulate […]

Flatlining Fuel Injection for Max Power in Race Engines

An Advanced Method in fuel injection tuning for certain normally aspirated (NA) engines is to flatline the fuel curve. Flatlining is not always possible, especially in very high flowing cylinder heads or efficient pent roof heads on small displacement engines. However, in race engines with common wedge heads or early model Hemi heads, volumetric efficiency […]