The F150 power is general pretty clean. If you are sure it's the injectors you might have an underlying problem that might leave you stranded one day. Generally you have a few choices for noise, alternator, ignition, and/or injectors. I would definitely go the way you are doing and clean the power up, but don't rule out finding the cause. Sometimes you just can't fix it and masking the issue is the only alternative. Good luck.