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hey guys I recently bought a flash tuner the x calibrator 3. I noticed that there is a place to adjust the global spark. This may be a stupid question but what and why would you adjust this for?
 

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first if i am not mistaken global timing should only be adjusted on manual cars.....and for adjusting it you could pull timing for nitrous or pull a little timing to run a lower octane fuel or increase for a higher octane fuel like some 100 octane... hope that helps.
 

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MM's resident Juice head
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Its to adjust for octane..bump it if you are going higer...take it back if you are running lower octane
 
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