19 lbs are actually the 94-98 injector. 99-04 use 21 lbs. As stated, there is no need to upgrade until you are pushing a LOT more air in. Question: You said 'running out of mods' - what have you do to reach that point?
Full Answer
What is the fuel injector size on a Mustang?
Mustang Stock Fuel Injector Sizes Model EV6 1999-04' V6 22lb/hr 2005-10' GT 24lb/hr 1996-01' Cobra 24lb/hr 2003-04' Cobra 39lb/hr 18 more rows ...
Should you upgrade your Mustang’s injectors?
When upgrading your mustang and adding more power, one good thumb of rule is to upgrade the injectors for that application, especially when your car hits a certain horsepower range after modifications. When it comes to injectors, the bigger the injector might not always be the best for your modifications.
What fuel delivery parts will wake a 1994-1998 Mustang engine up?
So pick up some great 1994-1998 Mustang fuel delivery parts and wake that engine up! You know what else will wake that engine up? Mustang Intake Manifolds and Mustang Intake Spacers.
What kind of fuel injector does the Ford Racing m-14464-u2j use?
The Ford Racing M-14464-U2J Fuel Injector Adapter Kit will adapt Jetronic/Minitimer injectors to fit the USCAR style harness. Engines require a certain fuel flow rate that is generally measured in lb/hr (pounds per hour) and can be calculated via knowledge of its Brake Specific Fuel Consumption (BSFC).
What are the LBS on fuel injectors?
Fuel Injectors are sized by their flow rate. Flow rate is a measurement of how much fuel can be delivered over time. It is listed in pounds per hour (lbs./hr.) or cubic centimeters per minute (cc/min.). The right size injector can supply enough fuel under full load conditions at an 80% duty cycle.
What is a good duty cycle for injectors?
For a large margin of safety, the factory ECU and injectors will most likely be set up to operate somewhere around 80-percent. At 80-percent duty cycle, the injector is still operating at a level that allows it to flow predictably.
How much HP will 36 lb injectors support?
575 horsepowerRated injector flow: 36 lb/hr @ 43 PSI. Supports up to 575 horsepower.
What PSI are fuel injectors rated at?
43.5 psiThe Effect of Fuel Pressure on Injector Flow Rate Getting the right amount of fuel could be as simple as a pressure regulator adjustment. Most injectors are flow rated at 43.5 psi.
What is Max duty cycle for fuel injectors?
It is usually not recommended to run an injector at more than 80% duty cycle under actual driving conditions. This 80% duty cycle operating limit is taken into account to make sure the injector will be large enough to feed the engine under actual operating conditions and will not starve the engine for fuel.
How do you calculate injectors duty cycle?
If a fuel injector is activated for 15 ms (the IPW) at 3000 rpm the duty cycle is 37.5% (15 ms/40 ms), or rpm times IPW divided by 1200 equals IDC in percent. If an injector is powered for 15 ms at 6000 rpm, then IDC is 75% (15 ms/20 ms).
How much HP will 120lb injectors support?
1900 horsepowerRated injector flow: 120 lb/hr @ 43 PSI. Supports up to 1900 horsepower.
How do I choose a fuel injector size?
Injector Math: How to Calculate Optimum Fuel Injector SizeStep 1: Determine Horsepower. ... Step 2: Determine Approximate BSFC (Brake-Specific Fuel Consumption) ... Engine Type BSFC Using Gasoline. ... Step 3: Determine Your Safe Duty Cycle. ... Step 4: Calculate Your Optimum Injector Size. ... Step 5: Fine-Tune the Flow.
Which is better high or low impedance injectors?
That low-amp current keeps the injector temperature lower, which makes it more reliable; that's why the high-impedance design is the most common injector style for OEM applications. Low-impedance injectors, also called peak-and-hold injectors, are sent a more powerful electrical signal, usually around 56 amps, to open.
What is the average fuel injector pressure?
It is between 35 and 65 pounds per square inch (psi) on most vehicles.
Can high fuel pressure damage injectors?
No permanent damage as long as the pressure doesn't remain high for long. The valves must be fully closing. Even a few thousandths of separation between valve and seat would result in very little to no compression at all, the engine would spin freely when cranking and wouldn't start.
How do I increase the flow of my fuel injectors?
Increasing fuel rail pressure to get more through your standard injectors.Fit larger injectors - which can be very expensive;Add an ancillary injector - which can cause fuel distribution problems when the manifold is then required to flow an air/fuel mix, not just air;More items...•
How many injectors does a 99 GT have?
You know, its funny that 99+ v6s have 21# injectors, my 99 GT appears to have 19#s.
What does 0.8 mean in a fuel injector?
1. The factor 0.8 is called the "duty cycle" which means the injectors would be open, on the average, 80% of the time. However, perhaps the ECU could be forced to operate on a 100% duty cycle which would predict 252 HP.
What is the max NA HP for 21lb injectors?
NA applications can go alot further with a smaller injector. The max NA HP for 21lb injectors is ~250. Bumping fuel pressure will allow greater flow, but can be inaccurate without dyno tuning (and only can be bumped in the EEC on 99+ cars.) Bumping fuel pressure is a bandaid.
What companies make injectors?
There are a few manufactures that make larger injectors, but they cost $. Accel, MSD, Holley, Sieman Deka, Bosch...
Why put 21's in a V6?
Because the amount of fuel per cylinder need is greater per HP on a V6. Ford could of gotten away with 19's on the V6's but for some odd reason put in 21's. Larger injectors are a waste unless you have some significant mods.
Is a larger injector a waste?
Larger injectors are a waste unless you have some significant mods. And use larger injectors you need a chip programmed for them (perferred method) or a recal-ed MAF.