Nah...thats what these MARKETEERS want you to believe. I tend to fall for the marketing crap hence why I like to use Fuel Doctor. But this isn't for the injector cleaning properties, it's for the supposed fuel tank cleaning properties. That said, I have been meaning to get some once I got the TRD, but still haven't got around to it. In terms of performance, 40,000km into it's life without an injector clean and it still runs like new. Can average as low as 7.5l/100km and it runs nice times at the drags. I can't really imagine it running any better than that. Hey djkor Have you used any injector cleaners or fuel doctor on your trd? If you have, notice any difference? Cheers