Don't do it. I just tried it and it pinged like a mother.

 

There is a guy on the DiabloSport Forum that says he runs it with 91 with no problem. Well no such luck here. I envy you guys that have 93. lol

 

Just buy some octane booster at the auto parts store if it's that important to run the "tune"

 

If you have a SAMS or COSTCO near you see if they carry 93 octane. I carry a membership with both stores and when we travel most of them carry 93. The best part is that it usually for the price of 89 or 91. It is worth the $35 membership to get higher octane fuel at the same price or cheaper than other gas stations. I would be interested to hear form you guys if these two carry 93 near your home.

 

I have no pinging issues running the 93 tune with the 91 octane

 

Why do yall not have 93 octane?

regular is 87, mid is 92 93 i rarely pay attention and premium is like 97 or something down here. Or do you not wanna pay for premium fuel?

 

It is CA. Crazy emissions, crazy state. Nice to visit though

I did notice Sunoco dumped their Ultra 94 in my area, bummed about that.

 

lol emission controls, they cant afford to give tax refunds and now they take away premium fuel hahahhaha

 

man all the fuel up here is 87 89 and 91 octane. my truck pings on 91 octane

 

Well 1.5 bottles of Lucas octane booster did the trick. I'm just going to do that for the track then go back to 87 tune until DiabloSport comes out with a 91 tune for the 09s.