These fuel injectors are easy to use. Just install them in your Nissan R32, R34, or RB26DETT engine according to the standard procedures. When using, make sure your fuel system is clean and in good condition. For maintenance, it's a good idea to clean the injectors regularly to keep them working efficiently. If you notice any issues like poor engine performance or fuel leaks, check the injectors right away and replace them if necessary. Also, always use high - quality fuel to avoid clogging the injectors.