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Discussion Starter · #1 ·
I was able to do some testing and ran a best 0 to 60 time of 7.7 The car with a stock tune ran a best of 9.6 on 93 octane.The method of launch was medium throttle brake standing with trac and stabili off.Heavy throttle induced wheel spin.After timeing a number of cruze with auto trans samples on you tube.The average time seems to be right around a 10 sec 0 to 60.Of course i would have no idea what octane fuel those cars were running.Trifecta tuned examples ran between 8.4 to 8.9 0 to 60s.Those were a smaller sample so i do not think that is completely conclusive.My result was a 1.9 sec reduction in my 0 to 60 time with the tuned engine and running a stock trans tune.All testing done with a G tech at sea level. Torque appt flywheel numbers 178HP/201TQ Stock Intake with K&N panel filter/Shell V power 93 octane fuel
 

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I logged a 8.0 second 0-60 last night with my Trifecta tune that's customized to act more like your Vermont tune. Per my ScanGauge II:

Not sure what my engine output is.

All in all, not bad for a couple of fuel-sipping commuters!
 

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Discussion Starter · #3 ·
Nice darn good numbers is it a auto trans
 

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Discussion Starter · #4 ·
I found wheel spin would really cut into the numbers.Even if it didnt seem like a lot.My best was with no noticeable wheel spin at all.There was kind of a fine balance there
 

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Those numbers sound a little off.

I have a 2011 Automatic LTZ with the trifecta tune. Therefore, my car's curb weight of 3170 lbs and me the 150 lb driver is a 3320 lbs. I'm not sure exactly how much power I'm putting down, but I have raced in sanctioned 1/4 mile runs. I find those to be most accurate for measuring a 0-60 because you can model and extrapolate. My best timeslip was as follows:

0-60': 2.39
1/8: 10.14
1/8 ET: 70.45 mph
1/4: 15.70
1/4 ET: 87.55 mph

Here is an calculator to convert 1/8 mile to 0-60. Based on my timeslip ET and trap speed, it says 7.35 seconds.

They model this stuff all the time for drag enthusiasts so here are some formulas to verify.

To convert 1/8 mile ET to 1/4 mile ET, 1.55 seems to be the most consistent multiplier.

The check ---> 10.14 * 1.55 = 15.717
15.70 sec / 1.55 = 10.129

Pretty accurate? No? I found this formula somewhere online for 1/4 mile ET to 0-60 ET:

(ET / Trap) / 1.46 * 60

Using it for my slip, I get (15.70 / 87.55 mph) / 1.46 * 60 = 7.369 seconds. Pretty darn accurate.

We don't use trap speed in simple math formulas because trap speed is horsepower, which can be highly variable with E/T depending on gearing and the length of a race. Cheers!
 

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On second thought, these formulas are obviously only accurate for automatic transmissions. A computer will shift the same every time, every run. A human [usually] won't. :)
Frequent participators at drag strips actually DO tend to shift with consistency...once they've discovered *what* works with their vehicle. Muscle memory tends to overcome their actual "thinking" about what they're doing.
 
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Discussion Starter · #8 ·
A 2011 should best a 2012 by a few tenths do to final gearing. Or course depending on how much power each tune is putting out
 

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A 2011 should best a 2012 by a few tenths do to final gearing. Or course depending on how much power each tune is putting out
Yep, final drive ratio in the 6T40 automatic transmissions were lowered in 2012:

• 2011 @ 3.87:1
• 2012 @ 3.53:1

For a reasonably accurate 0-to-60 MPH equation visit this website and look near the bottom of the posting: http://www.stealth316.com/2-calc-hp-et-mph.htm
 

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Yep, final drive ratio in the 6T40 automatic transmissions were lowered in 2012:

• 2011 @ 3.87:1
• 2012 @ 3.53:1

For a reasonably accurate 0-to-60 MPH equation visit this website and look near the bottom of the posting: Stealth 316 - Formulas for 1/4 mile ET & mph vs. hp & wgt
Cool. The equation for 1/4 mile ET to 0-60 for this website is:

y = 0.0876x^2 - 1.4508x + 8.6149, where Y = 0-60 time and X = 1/4 mile time.

The correlation of R^2 = 0.9863 is incredible (1 being perfect correlation).

Plugging in my E/T, you get:

y = 0.0876(15.70)^2 - 1.4508 (15.70) + 8.6149
y = 7.42 seconds.

Awesome!!!
 

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Per Edmunds initial tests of the 2011 LTZ, they got 17.1 @ 80.4 mph in the quarter mile. I am 100% sure they used 87 Octane for this, since people on this forum with stock 1.4Ts get somewhere between 16.5-17.0.

Using the formula on the website provided by 70AARCUDA, the 0-60 time is 9.42 seconds. The claimed 9.3 seconds on this very run, which shows this formula will be pretty accurate. It may even be on the conservative side, because the Cruze is geared very aggressively and its top end power sucks.
 

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0-60 time are not a precise way to calculate performance, i suggest you go do some Quarter mile runs.

Btw a couple of weeks ago i was having fun with a GTI and 5 lights in row we were side by side. :)
 

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0-60 time are not a precise way to calculate performance, i suggest you go do some Quarter mile runs.

Btw a couple of weeks ago i was having fun with a GTI and 5 lights in row we were side by side. :)
I had one blow my doors off,it was no contest at all.
 

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i did a 0 to 60 in 6.88 seconds with my trifecta set up. funny thing is that number was after i removed the #42 injectors and the forge BOV. now i wonder what it would be with the water/meth on!!!??
 

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Discussion Starter · #15 ·
I would say the 0 to 60 results are a good way to measure the improvement of a tune. Over a sec or better is a darn good hp and tq increase in my book.
 

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No need to get into a tizzy, but just for comparison's sake, CR's numbers on a 2011 1lt auto tested at a standstill with engine idling:
0-30: 3.7
0-60: 9.8
45-65: 6.3
1/4: [email protected]
I cannot remember if they switch traction control and or stability control off on these runs. They do not power brake or rev and drop the clutch because more and more cars are coming equipped with brake overrides, and this is not typically a relevant or consistent way to measure for normal people comparing performance on the street that easily translates to street performance such as accelerating and passing and merging between models.
These numbers are more realistic than some of the magazine testing that gets loaner and tweaked cars from the manufacturers to test.
These numbers, coincidentally, almost match what a Corolla 4spd auto got. Thank goodness for the ability of a tune with a turbo!
 

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I'm a manual transmission. And I spun pretty well through half of 1st.
 

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Discussion Starter · #19 ·
Keep this in mind and gm has been doing it for years.Some test cars are going to tend to run strong.Maybe they take ten cars and run them hard and pick the one with the best numbers.Add 93 octane put a engine with 20K in a car with 1500 miles showing on the odo or what have you.This is why you see better numbers sometime than you can get.Also i drive these cars every day and as i said some are just plain stronger than others. Nothing new we use to call them blueprinted ringers in the 60s and 70s (Magazine Test Cars)
 
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Here are some magazine tests of the 2011 model Cruzes:

...the current 'summary' of Road & Track, Car & Driver and Motortrend magazine tests of 2011 Cruze models:

MAG-ISSUE...MODEL...ENG/TRANS..WT(lbs)..0-60MPH..¼SEC @ MPH ..T×V.
R&T May11...Eco.....1.4LT 6M...3050.....8.1 sec..16.2 @ 86.8..1406
C&D May11...2LT.....1.4LT 6A...3170.....8.0 sec..16.4 @ 85.0..1394
M-T Apr11...LTZ-RS..1.4LT 6A...3208.....9.0 sec..16.9 @ 82.1..1387
C&D Jan11...LTZ.....1.4LT 6A...3206.....8.9 sec..17.0 @ 82.0..1394
C&D Apr11...LS......1.8L..6A...3143.....9.4 sec..17.2 @ 82.0..1410
 
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