The ASNU Classic GDI is a world-leading fuel injector testing and diagnostics system designed for modern gasoline direct injection applications. Engineered for precision testing, injector analysis and ultrasonic cleaning, the Classic GDI provides workshops and fuel system specialists with accurate diagnostics, visible spray pattern analysis and reliable performance validation across a wide range of injector types. ASNU CLASSIC GDI The ASNU Classic GDI system has been designed for comparing injector against injector at a safe operating level and is suitable for use by apprentice level mechanics to Master level engineers. To enable a safe and easy examination of the injectors performance, the ASNU system runs the injectors at a lower and safer operating fuel pressure of up to a maximum of 10 bar. The ASNU Classic GDI injector test machine allows the user to safely examine the injectors Spray pattern in greater detail for any discrepancies in the fuel distribution and atomisation. *Finance options are available for UK customers. Please contact us for further information. Button Brochure Contact a distributor Button Parts & Accessories

This page displays the locations and contact details of our Service Centres across the globe. ASNU Service Centres If you are an ASNU owner but not listed below and would like to be then please get in touch or fill out our Register your ASNU machine form! Junior/Motorcycle Capability Standard Manifold Injector Capability GDI & Manifold Injector Capability GDI & 2 Stroke GDI Capability GDI & Piezo Injector Capability GDI, 2 Stroke GDI & Piezo Capability

Latest News 2 Apr 2023 ASNU Exhibiting at Japfest Silverstone on 23rd April 2023 We are pleased to be exhibiting at Japfest 2023 at Silverstone circuit..... Read More 4 Jan 2023 ASNU Exhibiting at Autosport International Expo on 12-13th January 2023 ASNU are pleased to announce that we will be exhibiting at The Autosport International Expo Engineering..... Read More 1 Dec 2022 ASNU New Injector Servicing Products We are pleased to announce we have some new Injector Service Parts added..... Read More 25 Nov 2022 ASNU Exhibiting at PRI 8th - 10th December ASNU are pleased to announce that we will be exhibit..... Read More 27 Oct 2022 ASNU Exhibiting at The SEMA Show 1st - 4th November ASNU are pleased to announce that we will be exhibiting at The SEMA Show from November 1st-4th at the Las Vegas..... Read More 10 Oct 2022 ASNU 219 and 219T Filter Basket & Tool for Siemens Piezo Injectors ASNU 219 and 219T Filter Basket & Tool for Siemens Piezo Injectors We are pleased to announce we now have replacement..... Read More 8 Sept 2022 ASNU Exhibiting at Automechanika Frankfurt 13-17th September ASNU are pleased to announce that we will be exhibiting at Automechanika, Frankfurt from the 13-17th of September. Make sure to come over and say hello to our many ASNU..... Read More 14 Jun 2022 ASNU New Product Release – ASNU 220 Pintle Cap We are pleased to release our new ASNU 220 pintle cap. These pintle caps are for certain model Honda vehicles that use the Keihin fuel injector shown below..... Read More 11 May 2022 ASNU Owners Facebook Group To our ASNU Owners, We have opened a new Facebook group..... Read More 14 Feb 2022 ASNU Exhibiting at Autotechnica 27-30th March ASNU are pleased to announce they will be exhibiting at the Autotechnica exhibition in Belgium from 27th – 30th March. We will have representatives..... Read More 21 Jan 2022 ASNU New Website Coming Soon! We are in the process of building a new website which we hope to have ready soon! Make sure you’re listed..... Read More 18 Nov 2021 ASNU New Product We are pleased to now have available our new coupling – ASNU 134 for testing the screw top Bosch GDI injectors..... Read More 19 Nov 2020 ASNU 1250p Injector We are pleased to announce the release of our new 1250cc Performance Injector Read More 5 Oct 2020 ASNU New Products ASNU 293 Pintle Caps & ASNU 294 Pintle Protection Caps are now available Read More 23 Sept 2020 ASNU 66W Wire GDI Filter Basket We are recommending that anyone testing and servicing..... Read More 14 Sept 2020 ASNU New Product Release We are pleased to announce we now have the Mercury Optimax..... Read More 26 Aug 2020 ASNU New GDI Parts available We are pleased to announce we now have stock of some..... Read More 10 Aug 2020 ASNU New Product Release We are pleased to announce the addition of the 'ASNU 133' coupling to..... Read More 10 Jun 2020 ASNU New Product Release The new ASNU 156A Adjustable Injector Test Rail has been designed to allow the..... Read More

Media ASNU's 30 Year History Video ASNU Germany exhibiting at Retro Classic Fair in Stuttgart Rob Wilson takes 3rd Place in Rd1 of BTRDA and Welsh Rally Championship ASNU stand at PMW Expo 2019 ASNU stand at SEMA 2019 ASNU at Trax Silverstone 6th October 2019

This page contains our Machine Manual Video that is sent out with each of our ASNU Machine orders. The video gives the user an insight into the complete set up and usage of our Industry Leading Machinery. USB Manual Video

ASNU Fuel Injection designs and manufactures advanced injector testing systems, performance fuel injectors and bespoke fuel system solutions for automotive, motorsport and specialist engineering applications worldwide. The World's Leading Injector Diagnostics System LEARN MORE Button Button Systems Button Performance Products Button Special Projects JMS Performance - Kuwait "ASNU allows us to provide professional injector testing, cleaning, and flow matching with documented results. From street cars to race cars, we trust ASNU equipment to deliver the accuracy and consistency our customers expect."

< Back ASNU 1250p Injector Laura Bonafont 19 Nov 2020 ASNU New Product - ASNU 1250p Performance Injector We are pleased to announce the release of our new 1250cc Performance Injector! The new ASNU 1250p injector is a 1250cc Flow Rate injector at 85% Duty Cycle and is the latest addition to the unique ASNU range of purpose-built Performance Injectors. The 1250P is a result of a partnership between Robert Bosch GmbH designing and producing the 1250P core injector exclusively to meet ASNU's requirement and ASNU's own years of experience of Performance Injector designing and production of Orifice Plates to provide the best possible combination of Spray Pattern and Flow Rate to suit thousands of applications and requirements. As with all ASNU Performance Injectors, the injector has a multi hole spray pattern and the 1250P in particular has a unique hole design that together with its excellent Linear operation this means very stable and controllable fuelling at extremely short pulse widths, during cranking, idle and low RPMs, whilst still meeting the engine's fuelling requirements at the top end. The 1250P is a tuner's delight when used on road cars due to the ease of satisfying the customers' Performance and Driveability demands but also helping keep it within the Emission regulations - something many tuners and Performance vehicle owners sometimes find hard to achieve. Equally, for a Race engine, the 1250P will ensure a perfect air/fuel mix and giving the cleanest burn during the combustion stroke with the minimum amount of fuel expelled on the exhaust stroke, something that happens if the fuel does not burn fully. The advantages of good atomisation for a Race Engine is well documented. ASNU take that atomisation to a new level in race engine requirements by providing better throttle response, better efficiency, less engine wear from unburnt fuel causing bore-wash. This will also mean lighter fuel loads and for timed applications this would mean less pit stops required. The ASNU 1250P is ideal for all performance applications and ASNU have fitments & adapters to suit all port manifolds and fuel rails on the market. Contact your local ASNU Distributor for more information! Previous Next

< Back ASNU New Product Release Laura Bonafont 14 Sept 2020 ASNU New Product ASNU 248A - Teflon Seal Installation Tool for Mercury OptimaxGDI Marine injector We are pleased to announce we now have the Mercury Optimax Installation toolavailable. This consists of the 2 parts shown below. The fitting cone helps to pushthe teflon seal into place, and the sizing tool then compresses the seal to fit. These are now in stock and ready to ship under part number ASNU 248A. Please contact your local ASNU Distributor for more information! Previous Next

This page displays Injector Fitting Instructions for customers to follow. Injector Fitting Instructions/Assembly Guide Fuel suitability ASNU injectors are designed for operation with gasoline based fuels up to E98, and are able to operate long term on fuels containing MTBE or ETBE. For other fuels such as Methanol-M100, please contact us to discuss suitability, as alternative seals and O-rings may be required. Assembly It is necessary to lubricate both the upper and lower O-rings and any manifold seals before installation into both the engine and the fuel rail. We recommend the use of a clean, non-silicon based motor oil. Ensure the oil does not contaminate the internals of the injector or the spray plate assembly. For certain turbocharged applications, the sealing tolerances for the injector to manifold/cylinder head have been changed to ensure a leak free installation at higher than stock boost levels where the OE seals can cause leaks. If, during maintenance, the injectors are removed and are to be refitted, fresh O-rings should be used. Spare O-rings can be purchased from ASNU’s approved Distributors or Service Centres . Installation When fully assembled into a cold engine, the injector must be free to rotate around its’ axis with a small amount of longitudinal movement (0.5 to 1.5mm). This ensures that the injector is not damaged by over compression when thermal expansion of the injector and related engine components occurs. We advise checking your fuel rail manufacturer's instructions for compatibility with our injectors if you are not using an ASNU fuel rail. Filtration A minimum filtration of 10 Microns is required for short term operation <3000 miles. For long term operation >3000 miles a filtration level of 5 Microns is advised. The life of the in-line fuel filter is to be determined by the user in response to environmental conditions and fuel quality. Failure to adhere to these limits may result in a drop in injector flow / performance and damage to the injector itself. Service Life and Storage To maintain the performance and tight operating tolerances of the injector, it is advised to send your injectors to ASNU Service Centres to check their operation and be cleaned if necessary. We recommend replacing the O-rings during their service. Chemical cleaners may damage the injector and should not be used. Injectors that have been unused for some time such as with stored vehicles or spare parts should be checked before operation.

< Back ASNU New Injector Servicing Products Laura Bonafont 1 Dec 2022 New Injector Servicing Products for GDI Injectors! We are pleased to announce we have some new Injector Service Parts added to our range of accessories. These items are now in stock. Please contact your ASNU Distributor! Previous Next

< Back ASNU Owners Facebook Group Laura Bonafont 11 May 2022 ASNU Owners Facebook Group To our ASNU owners, We have opened a new facebook group especially for you - ASNU owners, where they can join and discuss and share advice with each other. We would encourage you to join the group so you can share advice and information with others, and we can post up tips and information to help you as well. Please see the link below and ensure you supply your serial number/ company name when you request to join as we have to approve everyone. https://www.facebook.com/groups/299858282338936 We look forward to welcoming you into the group Team ASNU Previous Next

< Back ASNU Exhibiting at Autosport International Expo on 12-13th January 2023 Laura Bonafont 4 Jan 2023 ASNU are pleased to announce that we will be exhibiting at The Autosport International Expo Engineering show at NEC Birmingham, UK. Make sure to come over and say hello to our ASNU representatives at stand #E646 . We'd love to hear from you and answer any of your questions. See you there! Previous Next