Superchips Flashpaq for JK, Initial Impressions
JK Enthusiast
Joined: Jul 2011
Posts: 222
Likes: 0
From: Tacoma, WA
Originally Posted by orfanidisnikolaos
just got my new superchips for my jk. when i tried to install it in the middle of the process and while i didnt have a chance to choose nothing except the quick tune mode, i saw general error code G3F. Does anyone know what this is? I am pretty sure i followed the instructions cause i tried 5 times in a row and one later. i have already e-mailed superchips. 
JK Enthusiast
Joined: Jul 2011
Posts: 222
Likes: 0
From: Tacoma, WA
Originally Posted by BigRedJK
What's the best tune for fuel economy? After installing my 3" lift and 35s, I was getting 16 city 22 highway (70mph with cruise on) under stock settings. I recently tried the 87 tune for two full tank cycles and my mpg dropped to 13.5mpg both city/highway. I calculated using distance/gallons=mpg and not just the JK computer(which was pretty darn close to my calculations).
I'm trying the Mileage XS tune right now. I may try the 91 tune because a lot of drivers seem to have reported nice reviews, but I'm having a hard time understanding why I should put premium fuel in a vehicle that doesn't exactly have what's considered a "high performance" engine. For example, my wife's 350Z requires only premium... never 81 or 83 octane. Maybe someone can help better explain to me the cost benefits of premium fuel in a JK that travels like a brick in the wind.
Thanks!
-Mike
2008 JKU Auto
3" Lift
35" Kumho M/T
3.73 gears
I'm trying the Mileage XS tune right now. I may try the 91 tune because a lot of drivers seem to have reported nice reviews, but I'm having a hard time understanding why I should put premium fuel in a vehicle that doesn't exactly have what's considered a "high performance" engine. For example, my wife's 350Z requires only premium... never 81 or 83 octane. Maybe someone can help better explain to me the cost benefits of premium fuel in a JK that travels like a brick in the wind.
Thanks!
-Mike
2008 JKU Auto
3" Lift
35" Kumho M/T
3.73 gears
87,89,92 in WA state. I can hear your jeep knocking from here running that fuel!!! :-P
JK Jedi
Joined: Oct 2010
Posts: 5,192
Likes: 3
From: REDONDO BEACH, CA
Originally Posted by TyStick
Where do u get octane that low? 81? 83? Does that really exist?!!!!
87,89,92 in WA state. I can hear your jeep knocking from here running that fuel!!! :-P
JK Enthusiast
Joined: Mar 2011
Posts: 434
Likes: 0
From: College Park, MD
Mine came in yesterday. Updated the software, tried installing it into the Jeep and I keep getting an error code G-3F. Called Superchips and the guy was zero help. I should've known something like this would happen. I have a trail ride tomorrow and wanted to use the crawling feature 
JK Enthusiast
Joined: Jan 2011
Posts: 309
Likes: 0
From: Athens,Greece
Mine came in yesterday. Updated the software, tried installing it into the Jeep and I keep getting an error code G-3F. Called Superchips and the guy was zero help. I should've known something like this would happen. I have a trail ride tomorrow and wanted to use the crawling feature
G3F means that you do not turn on when the programmer says so, but i do not think someone can do this wrong.
JK Enthusiast
Joined: Mar 2011
Posts: 434
Likes: 0
From: College Park, MD
Exactly. I dont see how I'd be doing it wrong. Two clicks forward to turn on, two back to turn it off.
JK Enthusiast
Joined: Jan 2011
Posts: 309
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From: Athens,Greece
JK Freak
Joined: Feb 2010
Posts: 550
Likes: 0
From: Porterville, CA
The 91 Performance Tune is great! 
I just got my tuner a few weeks ago and have been using the 87 octane tune and could only notice a minor performance improvement, mostly in the shift points. That was until I tried this...
I filled up with 91 octane a couple of days ago, changed my tune to the 91 Performance, and reset the computer to start keeping track of my MPG... Well, 2 days later after normal driving I am getting 2+ mpg AND a noticibly peppier Jeep. I'll continue to monitor this but I'm curious if others have had the same experience.
I just got my tuner a few weeks ago and have been using the 87 octane tune and could only notice a minor performance improvement, mostly in the shift points. That was until I tried this...
I filled up with 91 octane a couple of days ago, changed my tune to the 91 Performance, and reset the computer to start keeping track of my MPG... Well, 2 days later after normal driving I am getting 2+ mpg AND a noticibly peppier Jeep. I'll continue to monitor this but I'm curious if others have had the same experience.
JK Freak
Joined: Sep 2011
Posts: 676
Likes: 0
From: Cabot, AR
I just programmed mine a month ago and got the same G-3F and as stupid as it sounds I was only turing my ignition to ACC. I did not have it turn to the actual ON position. I'm not saying that is anyone elses problem but it was mine. Of course you should update the programmer before the initially use.
As far as MPG. I was averaging 14.9 before the 91 tune. Mostly city driving. Now I am averaging 17.2
I have not changed my driving habit and I am sure the 93 octane gas is healping the situation.
Just my two cents.
As far as MPG. I was averaging 14.9 before the 91 tune. Mostly city driving. Now I am averaging 17.2
I have not changed my driving habit and I am sure the 93 octane gas is healping the situation.
Just my two cents.
Last edited by SergeantChuck; Oct 7, 2011 at 12:47 PM.