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to tune or not to tune

3717 Views 15 Replies 9 Participants Last post by  marty68
Hello Cruze owners. I am new to THIS forum. I am taking delivery of a gently used 30k mile Cruze lt with rs package sun roof etc. in victory red.
my question is, (yes I have used the search function) what tune to use and should I use a canned tune.
I like the idea of the trifecta tune's cruise on cruise off functions.
does the "cruise on= tune off" mean everything including shift points remain as the general assigned them?
I should state I drive 55 miles each way to work. the freeway is 1 mile 1 stop sign from my house. the parking lot at work is 1 mile 2 stop signs from the freeway.
My car I am retiring ( to nephew) is a great running best car I ever owned 2004 Saturn ion quad coupe with 240k and still has original rear brakes.
Thanks for you responses in advance


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Anti-knock sensors provide the maximum allowable spark advance depending upon what grade fuel you use. Did try 89 octane ethanol free gas in my Cruze, both my fuel economy and performance suffered.
So what exactly is a tune doing? One thing I did read, is you have to use at least 91 octane fuel, already doing this.
So you notice a difference on 91 octane? all that aftermarket tune does is better utilize higher octane fuel, pushing the timing advance more and adjusting the fuel trims. Remember GM stock ECU perimeters are to only make XXX torque and to dial things back if that is exceeded, I'm sure this is where the aftermarket tune is able to get all that extra power.
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