Stock fuel system pressure is 58 psi ± 5 psi. Stock fuel injectors on a 2009 5.7L Hemi are 26 lbs. (the stock SRT 6.1L injectors are 30 lbs.). 52 lbs injectors is way oversized. For a naturally aspirated engine (V8) you would need engine modifications approaching 800 HP in order to need 52 lb. injectors.
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How can I make my 5.7 Hemi Challenger faster?
4:0811:32How to Make your 5.7 R/T as fast as a Scatpack. What does it really take?YouTubeStart of suggested clipEnd of suggested clipOne of the things you can do is do the the Hellcat. Lower air intake box so basically you've got toMoreOne of the things you can do is do the the Hellcat. Lower air intake box so basically you've got to take the front bumper off in the charger.
How long do Hemi fuel injectors last?
The fuel injectors on your car will typically last between 50,000 and 100,000 miles. The length of time that the injector lasts has a lot to do with the type of gas that is used in the car and how often the various fuel filters are changed.
How do I know what injectors are right for me?
1:261:24:38INJECTOR MATH-HOW TO CHOOSE THE RIGHT SIZE - YouTubeYouTubeStart of suggested clipEnd of suggested clipSo if you have a fuel injector rated in let's say 25 pounds an hour it will support a given amountMoreSo if you have a fuel injector rated in let's say 25 pounds an hour it will support a given amount of power. So your motor. Needs a half a pound of fuel.
Does bigger injectors add HP?
Larger throttle body and injectors A larger high-performance throttle body will deliver more horsepower. Depending on what type of engine you have, you can gain as much as 10-20 more horsepower and comparable torque.
What is high mileage for a 5.7 Hemi?
5.7 Hemi engines are good for 250-300 000 miles and more if properly cared for and regular maintenance is carried out. Early models suffered from valve seat issues which were rectified after 2008. It's not uncommon to find high mileage 5.7 Hemi trucks running around today.
Is a 5.7 liter Hemi a good engine?
Overall, the 5.7L HEMI is a stout and reliable engine. It's certainly not the most reliable engine in the world. It's also miles ahead of the least reliable. There's good reason the Chrysler 5.7L has powered some flagship cars for nearly two decades.
Do bigger injectors need a tune?
In general, injectors need a tune. Otherwise, your ECU is trying to drive the new, bigger injectors using the duty cycle and dead times for the old, smaller injectors, which means too much gas potentially at the wrong time (i.e. - running rich and potentially missing).
How do I know what size fuel injectors I have?
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.
Will bigger injectors hurt mpg?
In the end, do not upgrade to larger injectors in an attempt to get better fuel mileage, as new stock sized injectors will do the job if your current injectors are worn out. But at the same time, if you are looking for more power, do not be afraid to go to a larger injector because of losing fuel economy.
What happens if your injectors are too big?
It's easy to fall into the trap of thinking that bigger fuel injectors equal more power, but unless your engine is set up to deal with the extra fuel, you'll be on a fast track to trouble. The excess fuel will flood the engine and it either won't run at all, or will be running too rich.
Can I put bigger injectors on stock engine?
You can;t do a stock tune unless you can fool the ecu into thinking it is getting more or less air. If you throw in bigger injectors it will hold that injector open for the same amount of time as the smaller injectors and it will dump TONS of fuel in.
Is it worth upgrading fuel injectors?
In reality, if your car is modified to the point at which you need upgraded fuel injectors, you realistically need an upgraded fuel delivery system for optimum results. If done right, an upgraded fuel system will create an atmosphere where the engine can make more power, reliably and efficiently.
6.4l Hemi Stock Injector Size | Dodge Challenger Forum
5.7, 6.1, 6.4 Hemi interchange selection guide | For E Bodies Only ...