where i live, the highest any of the gas stations have is 91 octane gas, so i was wondering if the car can safely run 91 instead of the usual 93?, if it cant, is there anywhere that i can get an ECU tune to change it to run on 91? can i get a shop to do that or can i just buy a tuner/chip to do that? or should i look for a different car? any responses would be greatly appreciated

 

Definitely need a different car.

 

What does your Owner's Manual say?

 

Time to get a prius bro. No way around it

 

B-b-b-but that requires reading!

 

The 350Z requires a minimum of 91 octane premium fuel. Don't worry about it.

 

03 to 08 owners manuals http://justgivemethedamnmanual.com/n...owners-manuals took me 15 seconds to find them on Google

 

Uh yes, I run 91 on a boosted setup (lower CR) and I've run boosted up to 13psi on 91 octane on stock CR (10.6:1), you'll be fine on 91 N/A. If your boosted, just get it tuned on 91.