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    • McLaren 720S goes to Dyno Spectrum for a 91 octane re-tune and picks up 47 rwhp for 820 total on 91 octane

      The professional thing to do in the tuning industry if getting a car to work on that a competitor previously worked on is not to name who it was. Dyno Spectrum takes the professional approach and does not name who tuned this McLaren 720S M840T previously.


      We sure would like to know though, right? Especially when Dyno Spectrum picks up so much power over the previous tune and addresses driveability issues.

      It is almost hard to believe the difference could be so large:


      Yep, it is spooling quicker too:

      Made a visit out to @acperformanceshop to retune @ak_frank s beautiful 720s! We managed to pick up 47whp over his old tune, same fuel & same gear, helped it spool up 400RPM earlier, and cleaned up a nasty throttle closure at 7500RPM he had on the old tune(not ours).
      Incredible 91 octane numbers and that the difference from a previous tuner could be so large.

      This article was originally published in forum thread: McLaren 720S goes to Dyno Spectrum for a 91 octane re-tune and picks up 47 rwhp for 820 total on 91 octane started by Sticky View original post