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Most economical way to add some pep to my Wrangler?

gato

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Our 2019 2.0t was a half second slower 0-60 on the same tires going from 4.10s to 5.38s. The torque multiplication in a set gear sounds all well and good, unless you have an AUTO. Torque to the wheels is torque to the wheels. The engine doesn't know how it gets there and won't effect driveability or mileage in my experience. 5.13s in 8th gear are nearly identical to stock 4.10s in 7th. The engine doesn't know the difference. 1st gear on take offs sure, but how much time do you spend there? A few seconds on the average drive.
^^^^ someone who gets it.

The torque converter already provides much shorter gearing in 1st on take off for those with the Auto. Those with manual can slip the clutch for a similar effect - but I hear the clutch will then blow up :)
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scj64

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A car can not tell the difference between shorter diff gearing or shorter transmission gears. It is all the same.
If you’re taking a snapshot at one given rpm. That’s not at all how a drivetrain works. Everything you change behind the engine effect's how it can perform. We’re not driving 15,000 horsepower top fuel cars and not many people drive around in low range either. Try to stay relative to the OP’s topic.
 

scj64

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^^^^ someone who gets it.

The torque converter already provides much shorter gearing in 1st on take off for those with the Auto. Those with manual can slip the clutch for a similar effect - but I hear the clutch will then blow up :)
Why would you want to only use 7 gears when 8 are available? It’s all about efficiency with what we have to use. Excessive slipping of the clutch and/or torque converter creates additional heat. Hey, you guys keep doing things your way. Just a shame you’ve so passionate about being wrong.
 

Steph1

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Most economical would be throttle controller.

Before regearing my oem 3.45, I purchased the Hikeit X9 and the difference was extreme in the way that it gets rid of the dead spots in the gas pedal, making it feel like you have much more power.

I have since regeared to 4.56 and kept the Hikeit X9 (now set on auto mode), and my Jeep turns those 35s as easily as it did the small oem tires on stock gearing.
 

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Zandcwhite

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Why would you want to only use 7 gears when 8 are available? It’s all about efficiency with what we have to use. Excessive slipping of the clutch and/or torque converter creates additional heat. Hey, you guys keep doing things your way. Just a shame you’ve so passionate about being wrong.
It's a balance though which is my point. There is absolutely such a thing as gearing too low. I did it. 5.38s and 38" tires sucked. Obviously you don't want 3.45s and 37's either. When geared too low, you're into the top gear before 50 mph most of the time. Talk about not using all the gears, why would you want to have an 8 speed and drive around in the same gear from 50mph to 90mph? There's a happy medium in my opinion. Personally with the auto I'd stick to 4.56's for 35-37's. Some prefer 4.88's. Others want to roll 5.13s and 35's. I can tell you from experience I would hate that combo and you're wasting half your gearing. You shouldn't be in the second Overdrive gear 80-90% of the time you're driving on the road in my opinion. Even with our stock XR, the 4.56s and 35s have the rpms up higher than need be when cruising on the freeway at low loads.
 

rickinAZ

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Most economical would be throttle controller.

Before regearing my oem 3.45, I purchased the Hikeit X9 and the difference was extreme in the way that it gets rid of the dead spots in the gas pedal, making it feel like you have much more power.

I have since regeared to 4.56 and kept the Hikeit X9 (now set on auto mode), and my Jeep turns those 35s as easily as it did the small oem tires on stock gearing.
I agree we this. Sometimes perception trumps reality. In this case, the throttle controller (only) makes the vehicle "feel" faster seat-of-the-pants. But...isn't that what it's all about?

This is a classic example of you really need to try it before passing judgment. Virtually everyone who tries a throttle controller likes it. Pedal Monster has a no questions asked money back guarantee and installs in ten minutes - what's to lose?
 

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rickinAZ

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These don't add any power at all, just changes your throttle response curve. Still not sure why this is worth $300 when you can just press down further on the accelerator and get the same result.
This statement is absolutely true. But...it shows that you haven't personally tried one. And...the throttle controller is a tireless helper. You'll tire of manually modulating with your foot after 5 minutes, and then you are back to the land of no pep.
 

Old Dogger

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Either re-gear, or trade it in on a 392.. :) I know, you said economical, so forget the 392..lol
 

Jmos4

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Hi,

Glanced at your post, if your has 3.45 gear ratio, definitely look at swapping to a higher ratio, will help.

My 22 JLUR 6mt has 4.88's and still isn't a rocket ship, but doesn't worry me getting out into traffic either, I am now running 35's and still ok for a daily driver just not going to set any 0-60 times.

If you have the funds for a supercharger or hemi swap I think you'd be better of just ordering a 392.

I have heard the 2.0 is a lot more pep than the 3.6 and sure the A8 helps with the low end. But I have not driven either.

My wife's 2015 stock JKUR with the nag 5 speed and 4.10's is quicker out of the hole than my 22 was even with 33's. So maybe test drive a few different drivetrains. Either way it's a Jeep not a race car.

Regards,
Jim
 

TrailScooter

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As cool as a hemi swap is I'd rather supercharge instead of ripping out a whole drivetrain, even if the costs were equal.


I put in a Magnusun super charger. More power than the hemi and much cheaper... not to say its cheap. If i were asked if I were happy...


nzx3sixx3tg41.png




Yes sir, yes I am....
 

scj64

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It's a balance though which is my point. There is absolutely such a thing as gearing too low. I did it. 5.38s and 38" tires sucked. Obviously you don't want 3.45s and 37's either. When geared too low, you're into the top gear before 50 mph most of the time. Talk about not using all the gears, why would you want to have an 8 speed and drive around in the same gear from 50mph to 90mph? There's a happy medium in my opinion. Personally with the auto I'd stick to 4.56's for 35-37's. Some prefer 4.88's. Others want to roll 5.13s and 35's. I can tell you from experience I would hate that combo and you're wasting half your gearing. You shouldn't be in the second Overdrive gear 80-90% of the time you're driving on the road in my opinion. Even with our stock XR, the 4.56s and 35s have the rpms up higher than need be when cruising on the freeway at low loads.
Everyone’s needs are different as to what they want or need. I put 4.88’s in my 5 speed auto JK with only 35’s and I did it as I pulled my bass boat a lot. No way normal driving required that low of a gear but it suited my needs.
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