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Old 12-28-2016, 08:13 AM
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Flashpaq gear ratio

Got a flashpaq for Christmas. Was a little exciting. Did a few things here and there with it. Notice a difference. Nothing major. My question is has any one changed gear ratio setting with out actually changing the gears. I was just poking around and saw the gear ratio was set for stock. Not sure what their setting for stock is. So I changed it to the 3.21 gear. Which is what I have. Noticed a shifting difference. Maybe their stock setting is slightly different from 3.21. Dunno. Figured I'd ask. What if I changed the setting to 3.7 when I really have 3.2 gears. Would physical damage happen? I want to mod the shift points a bit because from 0-25mph I'll already in 4th gear and it's ANNOYING that by time you're at 25 it's in 4th. Thanks!

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Old 12-28-2016, 08:30 AM   #2
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Originally Posted by RayenTiger View Post
Got a flashpaq for Christmas. Was a little exciting. Did a few things here and there with it. Notice a difference. Nothing major. My question is has any one changed gear ratio setting with out actually changing the gears. I was just poking around and saw the gear ratio was set for stock. Not sure what their setting for stock is. So I changed it to the 3.21 gear. Which is what I have. Noticed a shifting difference. Maybe their stock setting is slightly different from 3.21. Dunno. Figured I'd ask. What if I changed the setting to 3.7 when I really have 3.2 gears. Would physical damage happen? I want to mod the shift points a bit because from 0-25mph I'll already in 4th gear and it's ANNOYING that by time you're at 25 it's in 4th. Thanks!
I've wondered that myself. I've seen that in my flashcal and have just been too scared to change it.

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Old 12-28-2016, 08:37 AM
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Originally Posted by twilliams1615 View Post
I've wondered that myself. I've seen that in my flashcal and have just been too scared to change it.

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I'm all for risk taking. But something that could end up doing physical damage to my daily driver. I'll wait for an answer. Lol. I just wish it gave you an option to mod actual shift points on a Jeep.
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Old 12-28-2016, 10:47 AM   #4
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The only solution to your problem is a regear - not a programmer. Their settings should be the same as 3.21 is 3.21 - there would be no difference.
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Old 12-28-2016, 11:39 AM   #5
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Wrong gear ratio setting on comp can put you in limp mode too. I have read of that happening after gear swaps when comp settings are not adjusted.
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Old 12-29-2016, 12:18 AM   #6
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2007-2010 will not go in Limp mode but 2011-2017 will.
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Old 12-29-2016, 09:25 PM   #7
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Your Jeep computer is programmed with all that info and the flashpaq reads the Jeep computer which has gear ratio info loaded. So it knows what ratio is stock. All changing ratio on the flashpaq does is change your shift points. You can't damage anything by changing to 4.10 if actually running 3.73. The canned tunes actually change shift points as well. I really like the Pedal response feature. You can make it more responsive which makes the Jeep get up and go. Gearing on your Jeep is what it is, Unless u physically change the gears. Computer just helps gets the most out of what is installed.
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Old 12-30-2016, 09:35 PM   #8
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I disagree w/ the last post. I have changed the ratio using the Flashpaq and what a mistake! The tranny will lock up in a low gear and won't shift. It also went into limp mode. Had to return it to stock while sitting on the side of the road and then reprogram it again. Talking to superchips tech, "yes this will definitely cause a transmission failure". I eventually made a gear change to 4.88's. I was changing some other feature and accidentally set the ratio back to stock without realizing it. Within a 1/2 mile I thought the tranny was falling out. Luckily I was able to set the ratio back to the correct 4.88 w/o any damage. Also, as per superchips, DO NOT change transfer case ratio without actually having an aftermarket case such as an Atlas or substantial damage will occur! I hope this info will help you out.
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Old 12-31-2016, 12:04 AM
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I disagree w/ the last post. I have changed the ratio using the Flashpaq and what a mistake! The tranny will lock up in a low gear and won't shift. It also went into limp mode. Had to return it to stock while sitting on the side of the road and then reprogram it again. Talking to superchips tech, "yes this will definitely cause a transmission failure". I eventually made a gear change to 4.88's. I was changing some other feature and accidentally set the ratio back to stock without realizing it. Within a 1/2 mile I thought the tranny was falling out. Luckily I was able to set the ratio back to the correct 4.88 w/o any damage. Also, as per superchips, DO NOT change transfer case ratio without actually having an aftermarket case such as an Atlas or substantial damage will occur! I hope this info will help you out.
Thanks for all the replies. Wasn't planning on doing anything. Just my curious mind was curious. But a question for anyone who has the F5 Flashpaq 3874. Anyone have options missing? Site says I can mod the ESP Stability. I looked through every option but don't see it. I read on other forums and sites that people change their shift points. Spark advances etc, but I have none of that. I updated it right out of box like the book said. When I open ignition only two options I have are buy a warranty and buy the unlock. I've also read that people have downloaded "packages" for extra costs. I don't see those on the site either. Are those no longer?

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