I'm ready for the 93 tune

[My01yuk]

Ok, so I have a time slot for my tune this saturday and boy am i ready. I am going with the higher octane tune so this morning when filling up i put in 93 octane for the first time since owning my yukon. I was on the fence about which octane to go with, i was leaning more toward the 87 octane because I didn't want to pay anymore for gas than what I was paying already.

Then I thought about something Blueflamed posted on a thread about the two tunes. Money wise you are not paying that much more for using 93 octane over 87 and you are getting better quality of gas which should = better mpg's. This morning i paid $4.72 more by using 93 over 87. If I fill up every 7 days(4 x a month) and avg $5 more than what i'm use to paying that would be $20 more a month.

I started working from home 3 days a week in Feb so I'm not driving as many miles/week anymore so I can easily make up that $20. I realize my working from home really helps in making this decision easier for me but i would go with the 93 tune even if I didn't have the work from home schedule. I just think in the end the results of the tune would be much better. However I have read some posts from members that got the 87 tune and they were plenty happy with the results as well, so either way I think we are going to be happy with whatever octane you go with.

 

[01HDtahoeNJN]

My tune its in june I'm still on the fence with the octane...i just want to know the difference between 87 &91 performance wise with the bb tune...

Sent from my SCH-I500 using Tapatalk

 

[My01yuk]

My understanding is if you want better mpg and more power go with the higher octane. I'm sure if you hit justin or Jenna up they could help you with that.

 

[blueflamed03]

there ya go bro, yup...$20 a month, for the added power....why leave it on the table

you will LOVE it!

 

[My01yuk]

No doubt, it's a no brainer and plus, with the new 22's i need all the power available to get them rolling. $20 more a month can be made up by a number of things. I really can't justify not going with the higher octane.

 

[blueflamed03]

and in all reality, you don't HAVE to run 91-93 all the time. But when you want optimal power ( pulling, going up hills, driving it harder than normal) you can run 87 for day to day commute.

 

[07Burb]

and in all reality, you don't HAVE to run 91-93 all the time. But when you want optimal power ( pulling, going up hills, driving it harder than normal) you can run 87 for day to day commute.

a 93 octane tune won't causing pinging if you run 87 octane gas?

 

[blueflamed03]

a 93 octane tune won't causing pinging if you run 87 octane gas?

nope, spark knock will sense detonation, and pull out timing, or power as a another term. Hence why 93 has more power, gives more timing.

Say it runs great with 93 octane in it and 93 tune.
Put 87 in it, you mash the peddle and the computer senses knock, it will pull more timing out.
Like your '77. You have initial and mechanical advanced, or should. You make adjustments to cease detonation by reading the spark plug, or hearing it. You add bigger jets, or pull timing out until it goes away, or limit total timing, or ramp rate.
Same for computer controlled, but it's all automatic.

 

[07Burb]

Interesting!! I, too, have been tossing around which tune to get when the time comes (probably in the Fall sometime) and this is very helpful!!! I hadn't thought about it in that way. As it is now I have to put mid-grade (89 octane) in it anyway in order to keep it from pinging on load. A jump up to 91 or whatever wouldn't be that much of a monthly gas bill increase anyway I don't imagine...

 

[My01yuk]

and in all reality, you don't HAVE to run 91-93 all the time. But when you want optimal power ( pulling, going up hills, driving it harder than normal) you can run 87 for day to day commute.

Good info to know bro. Thanks