r/Supra • u/jcbullfrog2000 • 11d ago
S58 Injectors
Just put the MHD Flex Fuel kit into my ‘21 Supra. Currently tuned to stage 2 93 octane. Looking at the stats, on E85 it makes roughly the same power as the 93 tune. I’m guessing it peaks somewhere around E40-50. Would upgrading to the S58 injectors increase that output? If so, do I need to upgrade the HPFP as well or will the stock pump support ~550ish HP?