Superchips Flashpaq for JK, Initial Impressions
JK Super Freak
Joined: Apr 2009
Posts: 1,139
Likes: 0
From: Tulsa, OK
Originally Posted by deathwagon
I'm adding an update to my previous post, where I encountered significant sputtering and stumbling when accellerating and decellerating using the 87 tune on my 6 speed.
I switched to the tow tune and that got rid of the most of the accelleration stumble, but it still has an annoying sputtering and stumble upon decelleration. I'm having to slip the clutch to overcome it when transitioning from off-throttle to on-throttle. I'm going to try the Mileage XS tune next, but so far I'm pretty disappointed. That's a big chunk of change to spend on something that just allows you to calibrate your speedo for bigger tires and change the temp at which your fan comes on, but causes driveability problems. If I had an auto, maybe I would feel differently.
I switched to the tow tune and that got rid of the most of the accelleration stumble, but it still has an annoying sputtering and stumble upon decelleration. I'm having to slip the clutch to overcome it when transitioning from off-throttle to on-throttle. I'm going to try the Mileage XS tune next, but so far I'm pretty disappointed. That's a big chunk of change to spend on something that just allows you to calibrate your speedo for bigger tires and change the temp at which your fan comes on, but causes driveability problems. If I had an auto, maybe I would feel differently.
JK Enthusiast
Joined: May 2011
Posts: 126
Likes: 1
From: Lost
I know, it seems to be hit or miss. A few folks on another forum reported similar problems. I have a Flowmaster 40 and I'm wondering if the revised mapping just doesn't like it. I had no problems prior to using the Flashpaq though, with the Flowmaster in place. 
I do like the snappy throttle response, but so far it's not worth the tradeoff.
I do like the snappy throttle response, but so far it's not worth the tradeoff.
JK Enthusiast
Joined: Oct 2006
Posts: 150
Likes: 1
From: anytown,anywhere
Bad news is, I am now on vacation and need to wait until I get back to install the tune!!
JK Junkie
Joined: Nov 2009
Posts: 2,737
Likes: 1
From: Rochester, NY
I can run circles around my GF's stock JK. And I can keep up with my friend's turbo Jetta. (not really, but its not like a Jet taking off while I'm like "come on... come on... 61.....62.....63......". )
JK Freak
Joined: Aug 2010
Posts: 722
Likes: 0
From: Miami, Fl
JK Super Freak
Joined: Apr 2009
Posts: 1,139
Likes: 0
From: Tulsa, OK
Originally Posted by Tuto
The jeep seems to run smother. It is running cooler so it should help the engine in the long run.
BTW changing the Thermostant is not expensive nor difficult.
JK Enthusiast
Joined: Jan 2009
Posts: 221
Likes: 0
From: Jacksonville, Florida
Originally Posted by PG-JKU
07 Stick here. I didn't feel too much power increase, but WAY better throttle response.
It will probably suck if I turned it off or set it to stock.
It will probably suck if I turned it off or set it to stock.