Quote:
Originally Posted by Mandingo
It's been a long *** time since I posted here!
So my Z was tuned on 93 octane by Uprev in Austin a few years ago. I'm moving to a new city for the next 3 years where the highest grade fuel available is 91. I don't have a 91 octane map to switch to.
Will the ECU adapt to the lower octane rating and pull timing until it is running safely? I'd rather not go back to Uprev to get a 91 octane map if I don't have to since they are 5 hours away and $ is tight.
Thanks for your wisdom folks
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I have seen this before with my time on the dyno. Tuning can get expensive when making changes to your Z often. With your current UpRev tune your ECU will not let your Z just self destruct. Your ECU will adapt and change the perimeters in your current 93 octane UpRev tune. Your ECU will notest almost instantly you are using 91 octane fuel not to worry. The ECU will pull timing as needed and you will more than likely notest a drop in power a specially after your engine reaches operating temperatures. My advice would be to run only top tier gasoline in your Z like (Chevron,Texaco,Shell etc.) as Nissan recommends only using top tier gasoline’s in all Nissan models not just the 370Z. If you do notest any detonation or spark knock just add a bottle of octane boost and pour gasoline in your tank at the same time. I have been using the NOS brand octane boost lately and notested a difference a specially on track days.