FAQ – Deka LS 60lb Injectors

Q1: What exactly are Deka LS 60lb injectors?
A: Deka LS 60lb injectors are high-impedance, multi-orifice fuel injectors that flow about 60 lb/hr (≈630 cc/min) at 43.5 psi of fuel pressure. They’re commonly used in LS engines that are running boost, nitrous, or higher horsepower naturally aspirated builds that have outgrown stock injectors. Siemens Deka+1

Q2: How much power can 60lb Deka injectors support?
A: Exact numbers depend on fuel type, fuel pressure, and duty cycle, but as a rough guide:

• On pump gas, 60lb injectors can typically support up to the mid-600 hp range on many LS combos. Stinger Performance

• On E85, expect less peak power on the same injectors because E85 needs more volume.

Your tuner can use your specific combo (boost, RPM, BSFC) to calculate safe power limits.

Q3: Are Deka 60lb injectors high impedance? Will they work with my factory ECU?
A: Yes. Deka 60lb injectors are high-impedance (High-Z), around 12–12.5 ohms, so they work with factory-style LS ECUs and most standalone systems without needing resistor boxes or modified drivers. High Flow Fuel+2Polmaxracing+2

Q4: Will Deka 60lb injectors idle rough because they’re “too big”?
A: Older big injectors could be tricky at idle, but modern Siemens/Deka designs are linear and controllable at low pulse widths, which is why they’ve even been used in low-emissions applications. With correct injector data and a good tune, they can idle very clean on a street-driven LS. Siemens Deka+2Fuel Injector Connection+2

Q5: Are Deka LS 60lb injectors compatible with E85?
A: Many Deka 60lb sets are built with materials compatible with ethanol-blend fuels and are widely used on E85 LS builds. Always confirm your specific set is rated for E85 and make sure the tune is built for ethanol, since E85 requires roughly 30% more fuel volume than gasoline at the same power level. Stinger Performance+1

Q6: What connector style do these injectors use?
A: Most Deka 60lb injectors sold for LS applications are EV1 or EV6/USCAR style connectors in a standard long-body 60–62 mm length. Adapters or pigtails may be needed if your factory harness uses a different connector style. High Flow Fuel+2Polmaxracing+2

Q7: Will Deka LS 60lb injectors drop into my LS fuel rails?
A: In most LS1/LS6/LS2/5.3/6.0 applications, the standard long-body Deka 60lb injectors fit stock-style rails and intake manifolds when matched with the correct O-ring size (11 mm vs 14 mm) and connector style. Always verify length, O-ring diameter, and plug type against your current setup before ordering. Polmaxracing+1

Q8: Do I need a tune after installing Deka 60lb injectors?
A: Yes. Any significant injector size change requires a proper tune. Your tuner will enter the injector data (flow rate, offsets, short pulse adder, etc.) into the ECU so the car idles correctly, drives smoothly, and maintains safe air/fuel ratios under boost.

Q9: Are Deka 60lb injectors good enough for a turbo LS1/LS2 build?
A: For many mild to mid-level turbo LS builds, Deka 60lb injectors are a very popular choice and can work well when paired with the right fuel pump and tune. Extremely high horsepower or heavy E85 builds may require stepping up to 80lb, 95lb, 120lb, or larger injectors. Stinger Performance+1

Q10: Why buy Deka LS 60lb injectors from a specialist instead of a random marketplace listing?
A: Buying from a performance injector shop means you’re getting:

• Verified genuine Deka injectors

• Flow-tested and matched sets for even cylinder fueling

• Injectors that have been cleaned and tested before shipping Polmaxracing+1

That’s the difference between guessing and knowing your fuel system is ready when you turn the boost up.