What We Do

Every injector: cleaned, tested, verified

Professional cleaning and flow testing for gasoline, ethanol, and methanol fuel injectors — high and low impedance top-feed — on advanced digital flow equipment. We don’t just clean injectors; we test, restore, and verify they’re flowing like they should.

The Process

Eight steps, every time

  1. Exterior Cleaning

    Grime and corrosion removed from the injector body before service begins.

  2. Filter Removal

    Old internal filter baskets removed for full access to the injector internals.

  3. Pulse Clean & Backflush

    Ultrasonic pulse cleaning and backflushing clear deposits from the pintle and nozzle.

  4. Leak Testing

    Each injector is pressure-checked to confirm it seals completely when closed.

  5. Static & Dynamic Flow

    Digital flow bench testing at fixed and pulsed duty cycles — matched across the set.

  6. Spray Pattern Evaluation

    Atomization and spray geometry verified so every cylinder gets even fuel delivery.

  7. Resistance Testing

    Coil resistance measured to catch electrical faults before they strand you.

  8. New Filters & Viton® O-Rings

    Fresh filter baskets and Viton® seals installed — ready to run.

▸ Before / after flow numbers reported for every injector. Clean. Matched. Verified.

The Proof

Real sets, real results

Every set leaves the bench documented — here’s what the work actually looks like.

Set of eight Siemens fuel injectors before service, covered in grime with degraded O-rings
Before — Siemens set as received: deposits, grime, and tired seals
The same eight Siemens injectors after cleaning, with fresh Viton O-rings installed
After — same set: cleaned, flow-matched, new filters & Viton® O-rings
Underdog Racing flow test report showing before and after static and pulsed flow numbers for an eight-injector set
The Report — before/after static & pulsed flow, leak, spray, and resistance results for every injector. This goes back in the box with your set.

Scope & Pricing

Straight answers on what we service

What we service

  • Top-feed injectors — high and low impedance
  • Gasoline, ethanol & methanol injectors
  • Race cars, boats, motorcycles & daily drivers
  • Full sets flow-matched on the digital bench

What we don’t do

  • Remove or install injectors from your vehicle
  • Diesel injectors
  • Ficht or piezoelectric injectors (N54, N63, S63, N74)
  • GM Vortec CPI “spider” assemblies
$65
Per injector + HST, plus shipping

One flat rate covers the full 8-step service — cleaning, flow testing, spray and leak checks, new filters and Viton® O-rings. Customers in Aurora, Newmarket & Vaughan get free pickup and delivery instead of shipping.

$20
Fair Pricing Guarantee

If an injector cannot be serviced, we don’t charge full service fees — only a $20 test/flow check fee. You only pay full price for injectors we actually restore.

Ready?

Get your set on the bench

Pull your injectors, pack them well, and send them our way. They come back clean, matched, and ready to run — with test results to prove it.

Send Your Injectors Call +1 647 600 2701 Email Us