Redline Injectors
Premium Fuel Injector Cleaning, Injector Flow Testing, & Ultrasonic Fuel Rail Cleaning
From standard GDI to BMW Piezo injectors, whether dirty or clogged, our premium injector cleaning and flow testing service delivers manufacturer-level static and dynamic testing on state of the art precision computer-controlled benches and includes all required replacement parts. See which vehicles used piezoelectric Injectors.
We do not offer testing-only, cleaning-only services nor do we offer a no parts option or sell parts for that matter. We provide a single, premium service. Where compromise ends, premium begins. Don’t settle for less go with Redline Injectors!
At Redline Injectors, we do not believe in “doing things the they are done because it’s always been done that way”.
We use a proprietary waterless blend of 100% polar and non-polar solvents we call TrueFlow. Our solvent selection is safe enough for cleaning electromagnetic coils and electronic circuitry, yet powerful enough to dissolve varnish on contact. This approach is significantly more costly, took months testing and analysis to perfect along with a year of CAD design and CNC manufacturing of prototypes for the final equipment but the results proved to be well worth it.
We perform a resistance, pulse checks and additional electrical insulation electrical checks for Piezoelectric injectors before beginning service using Multimeter and/or Megohmmeter.
If an injector is found to be permanently defective BEFORE we begin cleaning and testing, we will not proceed with the service. Instead, we’ll issue a refund for the injector’s cost, there is a $0 bench fee.
The injectors exterior is then ultrasonically cleaned in a mild heated detergent for one minute to remove external contaminants. A low-pressure air flush clears any remaining solution.
All serviceable components including filters, O-rings, combustion seals, spacers, clips, and grommets are then carefully removed from the injector body and the injector is stripped.
Each injector is filled with yet another proprietary concentrated solvent solvent and tips are plunged into the solvent and pulsed on our proprietary injector bench. This ensures the solution penetrates every internal passage, all the way to the nozzle tip. This process runs for 5 minutes, allowing varnish and lacquer deposits to fully dissolve inside the injector. A final high-pressure air flush then removes any remaining solvent and loosened debris.
We accounted for the full range of injector form factors and designed and had machined custom collets to fit Top Feed, Side Feed, GDI, and Piezoelectric injectors for use on our Injector Bench.
We apply our unique fuel injector ultrasonic cleaning process using our proprietary Ultrasonic plate, injector adapter inserts and Trueflow cleaning solution heated to 130F in our German-engineered Elma ultrasonic machines. This applies to E-TEC injectors as well.
Every GDI and Piezo injector receives this treatment at minimum with 1 of 3 different methods. During this process, Viscor C-140 or N-Heptane is pressurized and backflushed through the injector while it is pulsed, dislodging and removing trapped debris. The material that comes out is often described as resembling fine black pepper specks and occurs 30% of the time.
If baseline injector testing shows an injector is especially stubborn, our proprietary POWERFLUSH machine is used at high pressure for up to 10 minutes in reverse, from the tiny discharge end then out supply side while upside down.
We open them like a hose ensuring maximum flow with the exception of Piezo injectors which we pulse. In our POWERFLUSH, we utilize the same TrueFlow solvent blend and heated to 90F. This forces out any remaining debris, dissolved or gummy varnish, lacquer and ethanol plaque.
This step is critical; many contaminants are simply too large or sticky and gummy to exit through the tiny nozzle discharge opening.
Each injector undergoes a final injector flow test on our Carbon Zapp GDR-x test bench to evaluate performance. 1 report per injector is generated.
As part of our standard premium service, you will receive new fuel injector components, including filters, O-rings, seals, decouplers, clamps, ferrules, caps and hoses, with OEM options generally available.
On rare occasions an injector still shows issues at this stage, it is mechanical fatigue or wear.
Port injector benches can only generate up to 90 PSI, our the Carbon Zapp GDR-X test bench with heated Viscor C-140 calibration fluid to run manufacturer-specific test plans at pressures up to 3,000 PSI exclusively for all GDI and Piezo injector testing. Each injector is evaluated across multiple test cycles against factory flow corridors to ensure OEM-level accuracy. As BMW N54, N63, N74 Piezo specialists, we perform eight precision tests per injector on our computer-controlled GDR-X bench.
Proper GDI and Piezo testing can’t be done on port injector machines. These injectors require equipment with Dynamic Electronic Mass (BK) measurement, capturing real-time flow data under varying conditions—far more precise than the visual, graduated-cylinder method used for port injectors. We maintain both bench types because each is purpose-built for its respective technology.
A very small number of shops use this class of machine. Wondering why most shops still use port injector machines for GDI testing? Click “Proper GDI Testing” below to learn more.
These injectors generate performance reports with unique terminology. To help make sense of them, we created a guide to understanding GDI & Piezo flow test reports. There will be 1 report per numbered injector and are electronically delivered to your email.
Yes, we have a 2 injector minimum.
Absolutely! Rest assured that we will take care of removing the injectors for you for (typically GDI and side feed) and invoice you for a bench fee of $10 per rail to do the work as problems can often arise. However, it’s important to note that we cannot be held responsible for any potential damage that may occur during the removal process. To ensure a smooth experience, we recommend that you personally remove the injectors from the rail.
To avoid any issues with shipping service secure them in plastic and tape them to prevent leaks.
For your convenience, side feed injectors will be re-installed in the fuel rails, top feed and GDI injectors will be packaged separately. GDI Injector clips are fairly easy to remove, you should not have no any issues, but if yours are tricky to remove we will can do it if you wish.
Turn around times are stated on the Home page.
We always replace filters, O-rings, seals, spacers, grommets etc. whenever they are available for the injector, this includes side feed injectors as opposed to cleaning them while still on the injector as most places do. They become fragile over time, why take a risk.
In fact we replace everything that is replicable.
For local drop/pick up service check the “Local Drop-Off” box on the order form.
Once order is places, email us at [email protected] for drop off instructions.
Yes we will email the contact on the “Order receipt” that we get a copy of when you place your order. Include your Name on a card or paper inside the shipment box as the shipping label sometimes gets obscured.
Include your Name on a card or paper inside the shipment box as the shipping label sometimes gets obscured.
We accept shipments from UPS, USPS, Fedex or DHL to following address 7 days a week.
Sending UPS is the optimal choice within the US, however.
Redline Injectors
3036 State Route 35 #227
Hazlet, NJ 07730
Include your Name on a card or paper inside the shipment box as the shipping label sometimes gets obscured.
When preparing the injectors for shipping, it is strongly advised to place them inside a regular zip lock bag first. This will help to keep the fuel smell contained. It is important to avoid any damage during transit, so make sure not to simply toss the bag into a box without any additional packing material. This is particularly crucial for the pintle end.
It is not recommended to ship the injectors in a bubble envelope. Optimal protection can be achieved by using a box with some padding or a bubble envelope in a box. The small flat rate box from the Post Office may be good budget-friendly option for smaller injectors.
Send the injectors with all O-rings and related components, either installed on the injectors or placed together in a bag.