we install a low flow device into our blow out fixture and a external testing show the installed device capable to save 20% water once it been installed. we excited about it, and make the necessary changes into all our water fixture. it been doing good, and we looking forward to have our performance period to start very soon. but then we notice that, the device doesnt come with any cut sheet for us to do the submission, and after a long discussion, we decided to run a 20% testing onto all the fixture.
the question is, can we do the testing during the performance period or we have to complete the testing before the performance period?