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The Injector Shop

BMW Index 12 Piezo GDI Fuel Injectors Testing Service

BMW Index 12 Piezo GDI Fuel Injectors Testing Service

Type: Fuel Injector Flow Testing and Cleaning

Regular price $29.95
Sale price $29.95 Regular price
Sale Sold out
Shipping calculated at checkout.

BMW N54 N63 S63 N74
Index 12 GDI Fuel Injectors
Flow Testing  Service

OEM Test Pressures and Plans

The Injector Shop is proud to provide Piezo GDI fuel injectors testing services for the N54, N63, S63, and N74 engines. Testing in performed using GDI specific precision test equipment, unlike most of our competitors that are testing GDI injectors on equipment designed for low pressure port fuel injection systems (ASNU type).

Great service for repair shops or DIY'rs that have cleaned and serviced their VDO GDI fuel injectors and want to have them flow tested to OEM standards before installation.

BMW Index 12 Injectors are safely tested in specialized GDI test equipment at operating pressures typically up to 3000 PSI against OEM BMW test plans utilizing precision measuring devices that measure liquid flow on a shot to shot basis, at actual operating pressure. Testing this way allows for precision measurement under operating conditions that can be digitally analyzed against the OEM flow test plans set by the injector manufacturer. NO GUESSWORK. PERIOD!

Not only do GDI systems run at considerably higher fuel pressures than port injection, GDI fuel injectors operate pulse widths at micro second measurements, where port systems operate at milli second time measurements, and our GDI specific equipment tests at these micro second operational parameters while performing full function load testing.

BMW N54 VDO GDI Fuel Injectors Testing on the GD1R at The Injector Shop

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Port fuel injector test benches that the majority of our competition use for GDI testing simply cannot perform any precision OEM testing or Piezo stack regeneration. This precision testing at actual GDI injector operating conditions allows us the ability to report the injector performance against the OEM injector specific test plan with 100% accuracy. This level of accuracy CANNOT be performed at any shop that is testing your GDI injectors on a port fuel injection bench at lower than operating pressure. If you are paying to have your GDI fuel injectors tested on an ASNU or similar port fuel injector flow bench you are getting the operators best guess as to how your injectors are performing....PERIOD!

There is absolutely NO GUESSWORK here at The Injector Shop. Test results are computer generated in very easy to understand color coded results. Individual test results can be provided digitally, as well as printed summary report.


$29.95 per injector
Select quantity to match the number of injectors you are sending

This is a testing only service intended for clean customer supplied index 12 BMW GDI fuel injectors. Testing will not be performed on dirty injectors, no exceptions! There are no parts replaced in this service.
Piezo stack regeneration is available as an add on service and can be found here.

Special Note:
If you have anything other than index 11 or 12 you are better off replacing your injectors with updated index 12's.

The Injector Shop Piezo GDI testing service consists of:

    1. Electrical test of the injector coil
    2. High pressure nozzle leak down
    3. Four OEM standard volume tests
    4. Live oscilloscope
      1. Full downloadable test report

      Please be aware that if you send in non-OEM (Chinese knock off) injectors we will immediately re-package and send them back with refund of service, minus return freight and a handling charge of $20.00. Bottom line is these knock offs are absolute junk, and I will not waste my time or your money testing them……PLEASE DON’T SEND THEM!!

      You have the option of purchasing shipping insurance here. The Injector Shop is not responsible for lost shipments or damage from any shipping provider and will not pay any claims.

      New Index 12 injectors are currently over 500.00 each. We highly recommend covering your freight with at minimum 500.00 of coverage PER injector sent in.


      The Injector Shop
      19407 99th Ave SE
      Snohomish WA 98296

      Shipping checklist:
      • Remove any external grease, oils, and gasoline from injectors than place in seal able plastic bags. We are not responsible for any incoming freight that is leaking or has external fuel odor and rejected/returned by shipper.
      • Cylinder numbers can be applied for your records, we do not need them but will sequence our reports to your numbering.
      • Print and fill out the below customer information and include it with the injector shipment.

      Customer Information:


      Street Address:

      City, State, Zip:

      Phone Number:


      Vehicle Year:

      Vehicle Make:

      Vehicle Model:

      Vehicle Engine Size:

      Current turnaround time:
      Piezo Injectors are cleaned and tested individually which drives then turnaround time. Current turnaround is 4-6 business days from the time your injectors are received.

      Injectors abandoned and unpaid:
      Any and all fuel injectors abandoned with us for a period longer than 30 calendar days, and the service requested is not paid for, will become the property of the The Injector Shop. 

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