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conehead · 08-05-2018, 07:15 PM

You don't need a tune. The ECU will pull timing to protect the engine. However, since the engine was actually built for premium, your mileage and performance will suffer. A tune can't fix that.

08-05-2018, 07:15 PM	#10
conehead Senior Member Join Date: Aug 2018 Drives: RS 2.0 Location: Phoenix Posts: 135 Thanks: 30 Thanked 62 Times in 39 Posts Mentioned: 4 Post(s) Tagged: 0 Thread(s)	You don't need a tune. The ECU will pull timing to protect the engine. However, since the engine was actually built for premium, your mileage and performance will suffer. A tune can't fix that.