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yes ...running large 32 inch tires and bigger or really heavy tires are what adds to the need to make clutch adjustments
 

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If the manufacture of the tune recommends it then yes ...AA stage 3 requires it
 

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All this info is on the AA website
  • All tunes level 3 and higher will need the waste gate rod shorter for maximum power. Click HERE for a link on how to easily adjust the waste gate.
  • The Level 1 tune is a modified stock power level tune, but has better boost maps to help keep you in the power. We disable many limiters, up the speed limit, rev limit, and make necessary fuel & timing changes. The 2017+ factory tune runs a max of 14.5-15psi of boost, and we keep that in this tune, it's just easier to obtain & maintain that level.
  • The Level 2 tune offers 16-16.5psi of boost and a 10-12rwhp gain. This tune can be used with the stock or aftermarket exhaust. Clutching is not needed, but is highly recommended with this tune, as just tuning the machine will not properly transfer the power to the ground. Clutching is another big horsepower gain. 91-93 Octane tune.
  • The Level 3 91-93 octane tune is a game changer! Hitting hard at +20-25rwhp, this tune offers the highest boost possible(17-17.5psi max) on 91-93 octane fuel. Due to the thicker head gasket and larger injectors on the 2017+ models, we are able to get away with his kind of power on pump fuel. These are absolutely huge power gains that will have you grinning from ear to ear. This tune must be used with an aftermarket exhaust to run on 91 octane fuel and requires clutching. If using 93 octane (or 91 with octane boost) you can run stock exhaust/cat removed but you will leave power on the table. Waste gate rod adjustment (2 turns shorter) is needed for tune to work correctly. Billet BOV is also highly recommended.
 

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21 Turbo S, 18 XPT Dynamix, 18 XP 1K
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Check your RPM at 55-60 mph. If you are too far out of the peak power band you need to adjust clutch weights. If you add power it will change the way the clutch shifts and can leave power on the table being out of the band. Depending on your clutch, belt, and how much power the tune added you can run into belt slip also which is where the adjustable clutch kits help with stronger springs better helix angles etc. Tires are the biggest factor in needing a clutch kit but there are other factors that can make a clutch kit a good idea.
 
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