Atomizer Injectors FAQ
1. How do I determine the correct size Atomizer injector for my racing engine?
Calculate your required injector size based on estimated horsepower, fuel type, number of injectors, and target air/fuel ratio. Online calculators can help, but always confirm with Atomizer’s sizing recommendations for your specific setup.
2. Why is proper injector sizing important?
Correct sizing ensures optimal fuel delivery, smooth idle, and reliable performance at all RPMs. Using injectors that are too large or too small can cause tuning difficulties and even engine damage.
3. What factors affect injector sizing besides horsepower?
Fuel type (gasoline, ethanol, methanol), engine aspiration (naturally aspirated, turbocharged, supercharged), base fuel pressure, and the number of injectors all play a role in sizing.
4. Are Atomizer injectors compatible with harsh fuels like methanol and ethanol?
Yes, Atomizer injectors are engineered to withstand harsh fuels, but these fuels can accelerate corrosion and require more frequent maintenance.
5. What is considered a harsh fuel, and why does it matter?
Harsh fuels include methanol, ethanol, and oxygenated race fuels such as VP M1, M5, E85, and Q16. These fuels are more corrosive and can impact injector longevity without proper care.
6. How often should I service Atomizer injectors when using harsh fuels?
Atomizer injectors are made from billet materials and designed to last for many years, even with harsh fuels. However, it’s important to send them in to Atomizer at least between racing seasons for professional service to maintain peak functionality and receive any available technology updates.
7. What makes Atomizer injectors unique for field serviceability?
Atomizer injectors are the only patented, 100% customer-rebuildable racing injectors, allowing racers to service them in the field with basic tools.
8. What comes in the Atomizer Master Rebuild Kit?
The kit includes a case, pliers, springs, coil seals, top and bottom o-rings, filter baskets, and soft jaws—everything needed for a complete field rebuild. (Link to kit)
9. Why is field-servicability important in racing injectors?
Quick, on-site repairs minimize downtime and can save a race weekend, especially when running harsh fuels or in demanding conditions.
10. How do I refresh or rebuild my Atomizer injectors?
You can perform basic maintenance on your injectors yourself using the Atomizer rebuild kit, but we recommend sending them to Atomizer for a professional refresh service once per season. Always service all injectors in a set at once for consistency.
11. What is the Atomizer Injector Refresh service?
A refresh is a full rebuild of internal wear components—your injectors will come back to you in like-new condition. For a fee, Atomizer will inspect, clean, and update your injectors to ensure they meet current specs with the newest technology. Some obsolete models may not be accepted for refresh and upgrades.
12. Are Atomizer injectors available in sizes for all racing applications?
Yes, Atomizer offers high-performance injectors from 40 PPH to 1525 PPH, covering everything from street cars to Pro Mods and 6,000+ HP applications.
13. What is injector impedance, and how does it affect my ECU choice?
Atomizer injectors are low-impedance and may require a peak & hold driver or compatible ECU for proper operation. Always check your ECU’s requirements.
14. Can I use Atomizer injectors with any fuel management system?
Atomizer injectors work with most aftermarket ECUs, but ensure your system supports low-impedance injectors and matches your application’s needs.