Superchips Flashcal Programmer out for JL Wrangler

[cmb396]

You should be able to disable them entirely.
Please feel free to give us a call and have the device handy and we'll see what might be happening there.
407-585-7000.


Thanks

Thanks for the reply, I called the other day and could not resolve anything. They seem to think it's with the vehicle rather than the tuner. Here are the two "warnings" instill get.
I don't get why I'm seeing anything IF they are turned off?!?

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[AZCrawl]

So I have a JLUR that I plan to run 37” tires on and a 2.5” lift. Friends have told me that the 4.10 gears won’t handle the 37” tires and I need to go to 4.88’s.

Is this problem something either one of your products could help with by possibly adjusting the shift points of the 8 speed?

I recommend 4.56 gears on 37's.

 

[Mojito Mojo]

I recommend 4.56 gears on 37's.

I know that the conventional wisdom for a JK was to regear but I’m hearing different things about the JL’s. I think I will see how it goes and then make one of two decisions: either regear or drop down to 35” tires!

 

[AZCrawl]

I know that the conventional wisdom for a JK was to regear but I’m hearing different things about the JL’s. I think I will see how it goes and then make one of two decisions: either regear or drop down to 35” tires!

I ran the numbers through this and 4.56 gears maintain the stock RPM ranges with the 8 speed and the gear ratios.

http://www.grimmjeeper.com/gears.html

 

[Mike@Powerteq]

Thanks for the reply, I called the other day and could not resolve anything. They seem to think it's with the vehicle rather than the tuner. Here are the two "warnings" instill get.
I don't get why I'm seeing anything IF they are turned off?!?

Thanks, were you provided with a case number when you called in?

 

[Mike@Powerteq]

Thanks for the reply, I called the other day and could not resolve anything. They seem to think it's with the vehicle rather than the tuner. Here are the two "warnings" instill get.
I don't get why I'm seeing anything IF they are turned off?!?

Can you tell me if you were seeing these errors prior to using the flashcal?

 

[cmb396]

Thanks, were you provided with a case number when you called in?

No, Warning light came back on as well. I re flashed again to turn tpms off, said they already were, erased DTC alerts, and the problem remains.
I'll be breaking down my factory tires and using those tpms, and returning the Superchip since it cannot fully turn the tpms off:

 

[cmb396]

Can you tell me if you were seeing these errors prior to using the flashcal?

Yes, as well as after. The flash cal did nothing for this issue.

 

[Mike@Powerteq]

OK, I want to make sure I fully understand though. Are you running without sensors currently?

 

[cmb396]

OK, I want to make sure I fully understand though. Are you running without sensors currently?

I currently have sensors in aftermarket Hostile wheels.
For the first 75 miles or so, they worked fine with no codes or errors.
I had already ordered the Flashcal prior to adjust for speedometer, and other things.
When the codes showed up, I thought no biggie, I'll just turn the tpms off, and so I did with the Flashcal. The error codes I posted above remained, and the tpms sensor light (the little tire looking thing) went away, until we drove the Jeep again, and then it came on again.
I used the Flashcal to repeat the process, and it says the tpms are already turned off, yet all the error codes light remain.

 

[Mike@Powerteq]

I currently have sensors in aftermarket Hostile wheels.
For the first 75 miles or so, they worked fine with no codes or errors.
I had already ordered the Flashcal prior to adjust for speedometer, and other things.
When the codes showed up, I thought no biggie, I'll just turn the tpms off, and so I did with the Flashcal. The error codes I posted above remained, and the tpms sensor light (the little tire looking thing) went away, until we drove the Jeep again, and then it came on again.
I used the Flashcal to repeat the process, and it says the tpms are already turned off, yet all the error codes light remain.

OK, we're going to look into this and see if there's a way to kill all the lights.

 

[Martindfletcher]

Can you adjust the tpms limits with flashcal? Did not see it on the list.

 

[cmb396]

Can you adjust the tpms limits with flashcal? Did not see it on the list.

Yes, it does have an option for that.

 

[Tech Tim]

Yes, the programmer will allow you change the gear ratio value in the computer in order to adjust shifting behavior, but given how well the 8-speed handles 35s, its probably not something you need to immediately address. Granted, the JL is still young and its longevity remains to be seen, but plenty of people are running 37s with 4.10s and the only thing that's getting killed is gas mileage.

That being said, the 8-speed auto is such a departure from the JK's WA580 that you might not even need to go to 4.88. 4.56 might be more suitable if you're looking to blend performance and fuel economy. 4.56 on the JK was the sweet spot for both 35s and 37s. It'll be even better on the JL.

Exactly. We're running the stock 4.10s with 37s and the 8 speed and the transmission is just awesome. You can squeal the tires if you really want to and you can do 80 mph down the freeway, it really is phenomenal.

Finally some sanity in the never ending gear saga. Thank you thank you thank you! So many people wanting to run ridiculous gears.

I don't think 4.88 is ridiculous for 37s on a JK, but both the 8-speed auto and 6-speed manual transmissions alone on the JL bring entirely different variables to the table. Yet, a lot of dealership techs and mechanics apply JK thinking to the JL when it comes to virtually any kind of modification and that's going to cause a lot of confusion and misinformation.

That's the key right there. The JL is light years ahead of the JK in so many different ways. Until the shops actually spend a lot of time in a JL and start modifying them, they won't understand.

We've got just over 6,000 miles on our JL now, about 5500 of them on the 37s and we'll still say we're learning more about this rig all the time.

 

[Nghteyes]

Exactly. We're running the stock 4.10s with 37s and the 8 speed and the transmission is just awesome. You can squeal the tires if you really want to and you can do 80 mph down the freeway, it really is phenomenal.

How fast can you drive the JL with 37s?






That's the key right there. The JL is light years ahead of the JK in so many different ways. Until the shops actually spent a lot of time in a JL and start modifying them, they won't understand.

We've got just over 6,000 miles on our JL now, about 5500 of them on the 37s and we'll still say we're learning more about this rig all the time.

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