I run the stock calibration with the cheapest grocery store 87 octane gas I can find. I have no complaints.

The 93 octane tunes generally bump up the spark by a few degrees above 5000 RPM and 80% load hardly worth the cost of gasoline and the ease of clogging up your cats or blackening your exhaust valves and combustion chambers.

 

Golly! If mine is advancing significantly by 2500rpm, does that mean something is wrong?
Oh My.

 

I'm still mad I wasted 2 months of my ownership experience driving around with the car like that.

 

The 93 octane tunes do not advance the timing until you reach above 50-60% load. So at 2500 RPM-4000 RPM below 50% load, you're either running retarded spark or stock spark. The biggest gains are well above 5000 RPM at 80% load or higher, and some of the advanced spark at lower RPMs are at loads so high that you could only reach it with a supercharger.

I've had my car for almost a year now and I love the stock calibration. I've gotten used to the throttle lag as well and see zero need to buy any aftermarket parts for the car. My SCT flasher is still empty although I have the database sitting in my laptop ready to go (Advantage 3.x).

 

Go to the Brenspeed site.

 

Golly, so all 93 octane tunes are the same.
What about 80% load at 3000rpm?
Have you run live link on stock vs. tuned on your car?
I guess I just wasted my money on a custom tune.
Between 2500rpm to 4000rpm is spark retarded or is something in your car retarded all the time?

 

That extremely annoying algorithm in the stock tune is the main reason why I installed an aftermarket tune. The extra power that came with the tune was icing on the cake.

 

In my opinion, if you're going to drop $500+ on a tuner and a cold air kit....get the one that works THE BEST.

As for the gas price thing, my fuel economy improved by 2mpg with the addition of Doug's 93 Octane torque and perforamnce tunes. Using 93 octane more than makes up the $0.25 differce between watered down bunk gas you might get, or high test V-Power with all the latest and greatest additives, detergents, and extra HP it allows. I say V-Power because I use Shell gas.

Speak with Doug if you want - he really has no vested interest in what kind of gas you use. He is able to do a lot more with the 93 octane fuel than he can with 87. That's why there is no 87 torqe tune.

Again.....you just dropped nearly $30k on a new car, and are putting a lot of money for what ammounts to only a big airfilter. If maximizing your performance dollar is goal, a 93 Octane tune makes the most sense.

Good Luck!

 

In D.C. the price difference between the top and bottom end of the gas pump can be over 60 cents. That means I'm spending almost $8 extra a tank on gas. That's a pretty good reason to stick with my 87. That $8 doesn't seem like much, but it adds up pretty quick for benefits I'm not really experiencing.

 

So I have heard. I keep putting off flashing the PCM because I just don't see the need. If you think the stock throttle lag was bad, go and rent a Pontiac G6. After driving a G6 for several days, I no longer feel any throttle lag in the Stang.

I flashed the Vic a few years ago and set it to run 93 octane. The 10 rwhp gain and the extra $0.20/gal got old after about 5 years. It's a waste of money for daily driving. It was useful at the track because you can get a faster time. So I've "been there, done that." I'm actually kind of happy that my S197 GT can run off of cheap grocery store 87 octane and still bark the tires in the first 3 gears.

 

Different strokes for different folks.

 

I use a JLT II with the SCT-X2 and Bamachips 87 Performance tune. This combo is good for good for 27.1 hp on a daily driven automatic car! Validated by dyno runs, too.

 

Why not just go with a higher octane tune? I mean after all filling up with 91/93 Octane Gas is only about 1-2.00 more per tank.

Richard

 

Wow. Only 16 cents difference between 87 and 93? Where do you live?

I filled up today for $2.57 a gallon. By 12 gallons that's about $30.84

The 93 was $3.12 a gallon. Same tank would be about $37.44

That's $6.60 difference.

 

Where do YOU live.
I live on the other coast (east) and its about the same diff as Richard said.

 

I live in California if you looked at the info on the leftand the big thing in my SIG you would have seen this and currently 91 Octane is around 2.98 a gallon, 87 is around 2.74. I also never let my gas tank fall below 1/4 Tank. And yes the average price difference between 87 and 91 is about 15-23 cents.



Richard