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All about MPG All about maximizing your Miles Per Gallon (MPG)

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post #1 of 12 (permalink) Old 08-28-2013, 01:11 PM Thread Starter
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i have been following the cruse forum about fuel mileage but on my cobalt i get for a 10 mile to work trip 30.1 mpg on average. i have been thinking of getting the trifecta tune for the cruze but i came across this on ebay and want to ask here what the general conscious is about this tuner chip? it is on ebay and for the cobalt is it snake oil or might it actually do something? thanks the item number is
251323202092

thanks for any ideas? i don't see how it can help but ou just never know for sure. on the cruze i think the trifecta tune is the best way to go but on the cobalt this may work may not? bp.

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post #2 of 12 (permalink) Old 08-28-2013, 01:54 PM
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I really really doubt it would do anything at all. If you take the time to read through the listing it says it saves you gas and gives you more power by adjusting the ECM based on how you drive and makes it learn... the computer does that from the factory...

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post #3 of 12 (permalink) Old 08-28-2013, 02:05 PM
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how much fuel mileage does that trifecta tune give you anyway?

2009 Ford Escape Limited - 3.0L, 6 speed auto, 4x4, 25/33 city/hwy imp mpg.
2017 F150 XLT-XTR - 5.0L, 4x4, 3.55's, E-locker, xtr chrome package, fx4 off-road package.
20/25 imp mpg
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post #4 of 12 (permalink) Old 09-13-2013, 02:53 PM
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wow lucky I get 21.4 MPG Tuner chips won't work. Trifecta is the only way and that could help some.
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post #5 of 12 (permalink) Old 09-13-2013, 03:11 PM
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How do you get 21 MPG


2010 Cobalt 2LT Sports Package
2.5% tint all the way round.
SUPRRAAACHARRRGGEDDD
2.9 pulley, 60# Injectors, Injen 2.5" intake
55 Watt 6000K Hi/Lo HID's
35 Watt 5000K Fogs
Black SS 17" Wheels
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YAKIMA ROOF RACK WITH 40" LIGHTBAR
2.5' ZZP DP
Full set of Black Recaros
Eibach sportlines for teh low.
Front and rear SS lips
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post #6 of 12 (permalink) Old 09-13-2013, 05:22 PM
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If your looking at increasing your mpg, a K&N drop in filter will increase a wee tad bit more, maybe 1-2, depending on your driving habits. Far as a tune is concerned, your throwing money away to something that wont benefit mpg. A tune will increase more pulse width injection on your fuel injectors, so meaning, they stay on more milliseconds than stock with the tune. Your factory PCM has 15 driving habits it learns located in the fuel trim (short term and long term). It relies on 1 of 15 during your drive and your initial 5 minutes of driving averagely, your car is trying to achieve closed loop strategy. Meaning...your cat converter needs to warm up to 600 degrees in order for the 02 sensors to work properly. During the initial 5 minutes, their ignored and your car produces a "rich" condition, shooting more fuel through your engine til your engine temp as well hits normal operational temperature.

So in English (haha), a tune without dyno testing and adjusting your fuel maps (fuel injectors) to run a bit leaner, will cause more fuel efficiency. Hope this helps you. A chip or street bought tune has no true reading of your drive to and back, driving habits, or your sea level/barometric pressure.

2009 Cobalt LS XFE U74
Mods: K&N Typhoon Intake, Option Cat-Back Exhaust, Cosmo Short shifter, Maxxim Ahead 17X7's, MPx shorty antenna, FE5 Strut/shocks, Tein S Techs, Moog endlinks, Moog spring seaters, ZZP shorty header, LSJ downpipe, LNF front grille
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post #7 of 12 (permalink) Old 09-13-2013, 05:56 PM
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Idk I just do. Automatic 05 Balt 2.2L coupe. CAI headers trifecta tune thrush muffler


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2005 Chevrolet Cobalt 2.2L Base Coupe Automatic
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post #8 of 12 (permalink) Old 09-14-2013, 03:58 AM
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Idk I just do. Automatic 05 Balt 2.2L coupe. CAI headers trifecta tune thrush muffler


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Header, lol...Vince from Trifecta tune cannot dyno tune your car, he takes what upgrades you have and determines the long term fuel trim based off a volumetric efficiency table and instead of your PCM making fuel adjustments during the rpm band of +8, +8, +9 (numbers representing to add more fuel), he sets them to 0 or +1, increasing your wideband range, thus creating more horsepower and torque. That's what a tune is today with OBDII systems.

With a dyno tune, they test the numbers on a pull and see what true HP and TQ your vehicle is pulling, then make adjustments during each pull to get the max your engine can produce with your setup. Im not saying Vince's tunes are horrible, they definitely show that they work, but even he knows, you can get more power with it on a chassis dyno.

2009 Cobalt LS XFE U74
Mods: K&N Typhoon Intake, Option Cat-Back Exhaust, Cosmo Short shifter, Maxxim Ahead 17X7's, MPx shorty antenna, FE5 Strut/shocks, Tein S Techs, Moog endlinks, Moog spring seaters, ZZP shorty header, LSJ downpipe, LNF front grille
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post #9 of 12 (permalink) Old 09-14-2013, 04:00 AM
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Yeah I know that. But I'm not spending $500+ to make minor adjustments.


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2005 Chevrolet Cobalt 2.2L Base Coupe Automatic
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post #10 of 12 (permalink) Old 09-14-2013, 04:08 AM
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Yeah I know that. But I'm not spending $500+ to make minor adjustments.


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2009 Cobalt LS XFE U74
Mods: K&N Typhoon Intake, Option Cat-Back Exhaust, Cosmo Short shifter, Maxxim Ahead 17X7's, MPx shorty antenna, FE5 Strut/shocks, Tein S Techs, Moog endlinks, Moog spring seaters, ZZP shorty header, LSJ downpipe, LNF front grille
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