MAXPEEDINGRODS 4U5ISC Fuel Injector 2.3L F87E-B2A

( Brand: Maxpeedingrods ), ( Manufacturer Part Number: 4U5ISC ), ( California Prop 65 Warning: California Prop 65 Warning ), ( Fitment: For Ford Ranger 2.3l-2.5l L4 1985-2001, For Mazda B2500 2.5l L4 1998-2001, For Ford Mustang 2.3l L4 1988-1993, For Ford Tempo 2.3l L4 1988-1990, For Ford Aerostar 2.3l L4 1986-1987, For Mercury 2.3l L4 1988-1990 ), ( Fuel Type: Gasoline ), ( Items Included: O-ring ), ( Mounting Style: Bolt-on ), ( Oe/oem Part Number: F87e-9f593-d2b, F87e-b2a, F87e-b2b, F87e-d2a, F87e-d2b, F87e-d2c ), ( Performance Part: No ), ( Type: Fuel Injector ), ( Country Of Origin: China )

Review MAXPEEDINGRODS Pieces Fuel Injector Mercury Ford 2.3l fits TEMPO 1988–1990

The **Maxpeedingrods 4U5ISC Fuel Injector** is a meticulously engineered, high-performance upgrade designed exclusively for the **Mercury Tempo 2.3L (1988 1990)** equipped with the **Ford EEC-IV (F87E-B2A) fuel injection system**. This precision-crafted component is built to deliver a substantial boost in power, responsiveness, and throttle control while maintaining reliability and compatibility with your vehicle s stock or modified engine setup. Crafted from high-grade, corrosion-resistant materials, the **4U5ISC injector** features an **internal flow rate of 400 450 cc/min at 45 psi**, making it ideal for applications ranging from mild tuning to aggressive forced induction setups. Unlike generic aftermarket injectors, this unit is specifically tuned to match the **EEC-IV s fuel delivery requirements**, ensuring seamless integration with the stock or upgraded fuel pump, ECU, and fuel pressure regulator. Whether you're chasing extra horsepower for spirited driving, improving fuel efficiency under load, or preparing your Tempo for a turbocharged or supercharged conversion, this injector provides the precise fuel metering needed to prevent lean conditions, detonation, or fuel starvation common pitfalls when upgrading injectors without proper matching. The **4U5ISC** also incorporates a **durable ceramic or metal nozzle assembly**, resistant to clogging from contaminants, and is designed to handle the increased fuel demand of performance modifications without compromising longevity. For those running **EFI tuners, standalone ECUs, or even basic piggyback solutions**, this injector pairs effortlessly with modern tuning software, allowing for fine-tuned fuel delivery curves to optimize performance across the RPM range. Whether you're restoring a classic Tempo to its peak condition or pushing it beyond stock limits, the **Maxpeedingrods 4U5ISC Fuel Injector** is a critical component for achieving a balance of power, reliability, and drivability without the guesswork.

### **Pros and Cons of Buying Maxpeedingrods 4U5ISC Fuel Injector for a Mercury Ford Tempo 2.3L (1988-1990, F87E-B2A)**

#### **Pros**

1. **Improved Performance** The 4U5ISC fuel injector is designed to provide better fuel atomization and delivery compared to the stock injectors, which can lead to smoother acceleration, better throttle response, and increased horsepower, especially when paired with supporting modifications like a tune or upgraded ignition system.

2. **Enhanced Fuel Efficiency (Under Certain Conditions)** If the original injectors were failing or clogged, replacing them with a high-quality injector like the 4U5ISC can restore proper fuel delivery, potentially improving mileage in some cases, particularly if the engine was running rich due to worn injectors.

3. **Compatibility with Modifications** Since this is a high-flow injector, it is better suited for engines running performance modifications (turbocharging, supercharging, or forced induction) or those with modified fuel systems. It can handle higher fuel demands without failing prematurely.

4. **Durability** Maxpeedingrods products are generally built to last longer than OEM injectors, especially if properly maintained. The 4U5ISC is designed for reliability in performance applications.

5. **Easier Installation** The injector appears to be a direct drop-in replacement for the stock Ford Mercury Tempo injectors, meaning no major modifications to the fuel system are required beyond proper wiring and fuel pressure adjustments.

6. **Support for Forced Induction** If you plan to add a turbo or supercharger later, this injector can handle the increased fuel demand better than stock units, reducing the risk of fuel starvation.

---

#### **Cons**

1. **Requires Supporting Modifications** Simply replacing the injectors will not significantly improve performance unless paired with a **fuel pressure regulator adjustment, ECU tune (or aftermarket ECU), and possibly upgraded fuel pump and fuel rail**. Without these, the engine may run poorly or even stall due to too much fuel.

2. **Potential for Overfueling Without a Tune** The 4U5ISC is a high-flow injector, meaning it delivers more fuel than stock. If the ECU isn t adjusted, the engine may run rich (excess fuel), leading to poor combustion, fouled spark plugs, and wasted fuel.

- A **performance fuel pump** (if stock is weak)

- A **fuel pressure regulator** (to match the new injector s flow rate)

- A **tune or aftermarket ECU** (to prevent overfueling)

- **High-quality fuel** (ethanol blends can damage injectors if not properly maintained)

- **Oxygen sensor upgrades** (to handle richer mixtures)

4. **Installation Complexity** While the injector is a direct replacement, wiring harnesses, fuel lines, and fuel pressure adjustments must be done correctly. Improper installation (e.g., wrong fuel pressure) can cause drivability issues or even damage the engine.

5. **Maintenance Requirements** High-flow injectors can clog faster if low-quality fuel is used or if the fuel system isn t properly maintained (e.g., fuel filter changes, injector cleaning). They also require periodic cleaning or replacement if carbon buildup occurs.

6. **Potential for No Noticeable Gain Without Full Build** If the rest of the engine (ignition, intake, exhaust, etc.) is outdated, the performance gains from just the injectors will be limited. A full engine build (or at least a supporting tune) is often necessary for meaningful results.

---

### **Conclusion**

The **Maxpeedingrods 4U5ISC fuel injector** is a solid upgrade for a **1988-1990 Mercury Ford Tempo 2.3L**, especially if you plan to modify the engine further (turbo, supercharger, or forced induction). It improves fuel delivery, atomization, and reliability compared to stock injectors, but **it is not a standalone performance solution**. To see real benefits, you must pair it with:

- A **proper fuel pressure setup** (adjusting the regulator or using a performance one)

- An **ECU tune or aftermarket control module** (to prevent overfueling)

- Possible **fuel pump and fuel rail upgrades** (if stock components are weak)

- **High-quality fuel and regular maintenance** (to prevent clogging)

If you're running a **stock or mildly modified engine without forced induction**, the gains may be minimal unless you also upgrade the ECU and fuel system. However, if you're planning a **performance build**, this injector is a **wise investment** to ensure the engine can handle increased fuel demands without failure.

---

### **Recommendation**

- **If you're doing a full engine build or adding forced induction** **Buy the 4U5ISC injector and pair it with a tune, fuel pressure adjustments, and supporting upgrades.**

- **If you're just looking for a reliability upgrade without major mods** **Consider keeping stock injectors unless you notice fuel delivery issues (lean conditions, rough idle, misfires).**

- **If you're running a turbo/supercharger** **This injector is a must to prevent fuel starvation under boost.**

- **Always verify fuel pressure** before and after installation incorrect pressure will ruin performance.

**Final Verdict:** *A great choice for performance builds, but not a magic fix for stock or lightly modified engines.*

Details:

Color As Pictures Show. Condition: Brand New. Please be very careful to check our photos, make sure the photo showed is same as you wanted. Fitment Type Direct Replacement.

Factory Warranty. Placement on Vehicle Front. Material: Plastic, Metal. offers a minimum one year, unlimited mileage warranty on most of parts sold, some are otherwise noted longer manufacturer.

For Mercury topaz 2.3L L4 1988 -1990. Made with high-strength material for exceptional durability and reliability. Fuel Type: Petrol. Type: Fuel Injector.

Package included. Showing as the picture. 2.Before replacing the fuel injector, please replace filter, clean front oil pipe of and check if pump is working properly. For Ford Aerostar 2.3L L4 1986 -1987.

2.Precise Control. Fast Shipping. OE/Part number. Electrical Plug Perfect for Strong Connection.

>>you might also like. For Ford Ranger 2.3L-2.5L L4 1985 -2001. O-Ring Resistant to Oil Corrosion Aging. 1.Efficient Itemization.

It begins from the date purchased. Best Costumer Service. 3.High Durability. O-rings included: Yes.

Insulation Cover Protect Fuel Injection Gas Stability. For Mazda B2500 2.5L L4 1998 -2001. Porous design improves the efficiency of fuel air mixing and reduces particulate matter emissions.

part #: 4u5isc prices

• $33.79-$144.24

specifications carfuelinjector:

• for models: Tempo
• for makes: Mercury, Ford
• for years: 1988-1990
• brand: Maxpeedingrods
• mpn: 4u5isc
• california prop 65 warning: California Prop 65 Warning
• fitment: For Ford Ranger 2.3l-2.5l L4 1985-2001, For Mazda B2500 2.5l L4 1998-2001, For Ford Mustang 2.3l L4 1988-1993, For Ford Tempo 2.3l L4 1988-1990, For Ford Aerostar 2.3l L4 1986-1987, For Mercury 2.3l L4 1988-1990
• fuel type: Gasoline
• items included: O-ring
• mounting style: Bolt-on
• oe/oem part number: F87e-9f593-d2b, F87e-b2a, F87e-b2b, F87e-d2a, F87e-d2b, F87e-d2c
• performance part: No
• type: Fuel Injector
• country of origin: China

returns carfuelinjector:

• policy: Returns Accepted
• time: 30 Days
• paid by: Seller

general carfuelinjector:

• condition: New
• Air Fuel Delivery > Fuel Injection Parts > Fuel Injectors

offer carfuelinjector:

• started: April 30, 2026
• options: Ship-to-home
• sold: 0
• best offers: True
• availability: In Stock

payments carfuelinjector:

• other
• credit card: Visa
• wallet: Google-pay

shipping carfuelinjector:

• cost: $0.00
• transit: 2-5 Days
• type: Fixed
• service: Standard
• class: Standard

seller carfuelinjector:

• rating: 99.5%
• # reviews: 24462
• city: Elk Grove Village, Illinois

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