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What is 5D Vtec & VVT Fuel Strategy tuning?


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We can simplify that in saying that this is an extra compensation table, or used to do an extra function related to fuel, spark, boost... 

You basically add extra trims +/- to the already defined 3D fuel table. Maybe you have another table related to engine runtime and enrichment to combat lean starts when heat soaked. That's the 4d

Then you add another one for extra fuel when hitting nitrous... That's your 5d

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