ABOUT MFE HIGH PERFORMANCE DIESEL NOZZLES AND INJECTORS
Most performance nozzle modifications by MFE are done in-house using The Extrude Hone process. When done correctly Extrude Honing is commonly recognized as the most precise method of injector spray hole modification. This is because Extrude Honing, when done correctly, not only maintains the spray hole shape and spray angle both of which are critical features that help form the injector's spray pattern, it also enhances not only the quality of the spray pattern but also increases the volume of fuel delivery in that spray pattern with its micro-polishing effect of the spray holes.
Having our own in-house Extrude Hone equipment lets us modify nozzles as needed to produce proven results. After modifying the nozzles the balance and the desired performance level must be confirmed. This is done by Fluid Flowing the nozzle assemblies as matched sets and if needed going back and doing final adjustments to guarantee when you make an investment in MFE Performance Products your desired results are gained.
Performing the Extrude Hone process on the nozzle case as a sub assembly, done in-house at MFE, is only the beginning of creating a performance injector. MFE technicians take the modified, balanced nozzles and install them on the injector bodies. If the unit is an electronic injector the complete nozzle and holder assembly is then flowed and calibrated as needed. During calibration electronic common rail injector tests include fuel delivery, fuel return delivery and injection duration measured in microseconds (millionths of a second).
After modification MFE performance nozzles actually have tighter flow tolerances than OE specifications. It has been our finding through in-house R & D that OE's allow about a 5% variance across any given set of nozzles. MFE performance nozzles on the other hand flow within 1% and 2% of each other after processing. This variance from the OE specification is the reason performance enthusiasts attempting to install their own nozzles see a high level of failure. In the MFE fuel injector rebuild facility with the best of conditions including OE New or Remanufactured injectors and nozzles flowing tighter than when they were new MFE experiences a 12% rate of injectors requiring shim adjustments to regain balance acceptable to be put in service. The odds of failure increase greatly when using worn or suspected bad injectors and doing the modification yourself.
The most important element to understand is that changing injector tips is a risk and a gamble when done by the performance enthusiast. The risk can include not only bodily harm and equipment damage, but the possibility of poor performance results is increased multiple times, we want you to get the most out of your investment in our performance products.