Grams Performance G2-0550-1401 550cc Fuel Injector Kit 52 lbs/hr BMW E36 E46

The Grams Performance G2-0550-1401 is a 550cc/min (52 lbs/hr at 3 Bar) high-performance fuel injector kit designed for BMW E36 and E46 3 Series applications. Built on Bosch EV14 high-impedance injector housings modified specifically for motorsport use, this kit delivers the precision fuel metering and atomization demanded by serious performance builds.

Each injector in the kit is individually balanced, flow tested, and dynamically matched to within one percent of each other, resulting in unmatched cylinder-to-cylinder consistency — even at low pulse widths. Every injector is pressure tested to 220 psi to guarantee leak-free operation, and the EV14's precision ball/pintle valve combined with Grams Performance's modified nozzle geometry enables consistent, stable performance up to 118 psi without the high-pressure instability found in lesser injectors.

Grams Performance uses a cold-cutting diamond grinding process completed in under three seconds to machine injector tips with exceptional precision. Unlike abrasive heat-generating processes used by competitors — which distort spray patterns and require pre-seating — Grams' cold-cut method preserves tip geometry for an optimized spray pattern that improves fuel atomization and mixture preparation right out of the box.

The ultra-fast solenoids feature a linear response curve across a wide range of operating conditions, allowing accurate fuel metering at the highest pressures and shortest pulse widths. Each injector is sealed with high-quality Viton O-rings that resist extreme temperatures and the harmful oils found in some fuels. The kit also includes dead time compensation values for each injector set to support consistent air/fuel ratios and repeatable tuning results.

Key Features:

• 550cc/min flow rate — 52 lbs/hr @ 3 Bar
• High-impedance design — no resistor box required
• Bosch EV14 standard-length housing, modified for high-performance use
• Cold-machined tips for precise, distortion-free spray pattern
• Ultra-fast solenoids with linear response curve
• All injectors balanced, blueprinted, and matched within one percent
• Pressure tested to 220 psi for leak-free operation
• Consistent performance up to 118 psi
• Compatible with gasoline, methanol, and ethanol fuels
• High-quality Viton O-rings for temperature and chemical resistance
• Includes dead time compensation values for tuning

Grams Performance injectors are tested and matched in controlled laboratory environments and validated through extensive dyno, street, and racetrack testing to ensure reliable performance in the most demanding conditions.