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-   -   Mods that can increase the HP/Torque? (http://www.wranglerforum.com/f274/mods-that-can-increase-the-hp-torque-149146.html)

Ltblue 03-26-2012 05:06 PM

Mods that can increase the HP/Torque?
 
Are there mods that could increase the horse power or torque of a JK? Did any of you made any changes or add anything to yours? example Chip, muffler, intake, etc?

SilverBolt 03-26-2012 05:09 PM

Supercharger, Turbo, or Hemi.

Daniel_M 03-26-2012 05:10 PM

Depends. What year is your Jeep? 3.8L or 3.6L? I have heard conflicting outcomes on bolt on performance mods. I have heard some say they gained and some say it was a waste of money.

-Dan

Ltblue 03-26-2012 05:10 PM

Quote:

Originally Posted by SilverBolt (Post 2184582)
Supercharger, Turbo, or Hemi.

I mean "cheap" mods lol..

JIMBOX 03-26-2012 05:11 PM

:D I've increased my APPLIED HP/TQ 25/30%, b

-----------------------------RE-GEARING---------------------------------

:dance::rofl: JIMBO

Ltblue 03-26-2012 05:11 PM

Quote:

Originally Posted by Daniel_M (Post 2184587)
Depends. What year is your Jeep? 3.8L or 3.6L? I have heard conflicting outcomes on bolt on performance mods. I have heard some say they gained and some say it was a waste of money.

-Dan

2012 JKU and I was planning of getting a exhaust/muffler kit. Don't know if that'll be a waste or not.

kbwwolf 03-26-2012 05:12 PM

Quote:

Originally Posted by Ltblue (Post 2184574)
Are there mods that could increase the horse power or torque of a JK? Did any of you made any changes or add anything to yours? example Chip, muffler, intake, etc?

Muffler and intake are generally a waste of $$.

A tuner like those made by Hypertech and Superchips will help, but they're only available for pre '11's, cuz of the rolling ECU codes Chrysler started using.

Gearing is the big dog.

kbwwolf 03-26-2012 05:13 PM

Quote:

Originally Posted by JIMBOX (Post 2184590)
:D I've increased my APPLIED HP/TQ 25/30%, b

-----------------------------RE-GEARING---------------------------------

:dance::rofl: JIMBO

JB got there first. ^^^^ This. :thumb:

Not cheap, though. But nothing with a Wrangler is, in my experience.

Ltblue 03-26-2012 05:13 PM

Quote:

Originally Posted by JIMBOX (Post 2184590)
:D I've increased my APPLIED HP/TQ 25/30%, b

-----------------------------RE-GEARING---------------------------------

:dance::rofl: JIMBO

Do you feel a big difference let's say 3.21 to 4.10?

Ltblue 03-26-2012 05:14 PM

Quote:

Originally Posted by kbwwolf (Post 2184593)
Muffler and intake are generally a waste of $$.

A tuner like those made by Hypertech and Superchips will help, but they're only available for pre '11's, cuz of the rolling ECU codes Chrysler started using.

Gearing is the big dog.

wolf did they make any 2012 chips yet?
Edit: do you know when it's coming out?

Daniel_M 03-26-2012 05:15 PM

As I don't have a 2012, I have heard 4.10 are good for up to 35" tires. You may notice a difference even go 4.56 or 4.88. But since you have the 3.6L you are already up over us 3.8L guys, so go F your self. lol

-Dan

Ltblue 03-26-2012 05:17 PM

Quote:

Originally Posted by Daniel_M (Post 2184614)
As I don't have a 2012, I have heard 4.10 are good for up to 35" tires. You may notice a difference even go 4.56 or 4.88. But since you have the 3.6L you are already up over us 3.8L guys, so go F your self. lol

-Dan

Lol Dan

kjeeper10 03-26-2012 05:18 PM

I know a mod that decreases power :D

MTH 03-26-2012 05:18 PM

Quote:

Originally Posted by kbwwolf (Post 2184593)
A tuner like those made by Hypertech and Superchips will help, but they're only available for pre '11's, cuz of the rolling ECU codes Chrysler started using.

Quote:

Originally Posted by Ltblue (Post 2184605)
wolf did they make any 2012 chips yet?

http://cs301601.vkontakte.ru/u110003...x_cd957bb6.jpg

snikt 03-26-2012 05:19 PM

When you guys say re-gearing, what is optimum for performance? I think mine came with 4.10s

I know from the mustang world that 3.73s/4.10s are the most sought after

kbwwolf 03-26-2012 05:21 PM

Quote:

Originally Posted by Ltblue (Post 2184605)
wolf did they make any 2012 chips yet?
Edit: do you know when it's coming out?

I wouldn't expect anyone to have one soon. Since Chrysler went to the rolling codes in '11, peeps have been waiting. And they're all still waiting. :)

Gearing really is your only option.

MTH 03-26-2012 05:22 PM

Take a look at a 2012 regearing chart next to a 3.6 engine dyno and look at what happens as the RPMs go up. Like Jimbo indicated, you're going to see a big boost in applied power as you turn more RPMs. I don't know that I'd go through the expense just for 4.10s, but I'd imagine 4.56s or so would give that jeep a heck of a lot of pull. Of course, you'll be spinning much higher RPMs than you're used to. And Ripp is looking to put out a supercharger that should provide some fairly stunning increases in power.

kbwwolf 03-26-2012 05:23 PM

Quote:

Originally Posted by MTH (Post 2184626)

Is that Bruce Lee?

As he seems to be indicating, your post went over my head. :confused:

kik 03-26-2012 05:23 PM

Quote:

Originally Posted by Ltblue (Post 2184600)
Do you feel a big difference let's say 3.21 to 4.10?

Other than re-gearing, leave it alone. I did a dual cat back exhaust knowing that there was no increase in anything, but I like dual exhaust. I have 4.10's and I think it's a good way to go.

kjeeper10 03-26-2012 05:24 PM

Quote:

Originally Posted by kbwwolf

Is that Bruce Lee?

As he seems to be indicating, your post went over my head. :confused:

He's scratching

Mike -is that druff I see ?

MTH 03-26-2012 05:25 PM

Quote:

Originally Posted by kbwwolf (Post 2184647)
Is that Bruce Lee?

As he seems to be indicating, your post went over my head. :confused:

My Brain is Full of F**k | Know Your Meme

kbwwolf 03-26-2012 05:25 PM

My advice for gearing a '12 is this. For a manual with 35" tires, go 4.56. It's not a conventional size, and Yukon doesn't make gears in that size, but 4.56 will give you the best combination of usable powerband and mpg, IMO.

For an auto of the same configuration, 4.88.

kbwwolf 03-26-2012 05:26 PM

Quote:

Originally Posted by MTH (Post 2184654)


Hahahaha...gotcha. :thumb:

Ltblue 03-26-2012 05:28 PM

Quote:

Originally Posted by kbwwolf (Post 2184636)
I wouldn't expect anyone to have one soon. Since Chrysler went to the rolling codes in '11, peeps have been waiting. And they're all still waiting. :)

Gearing really is your only option.

Quote:

Originally Posted by MTH
Take a look at a 2012 regearing chart next to a 3.6 engine dyno and look at what happens as the RPMs go up. Like Jimbo indicated, you're going to see a big boost in applied power as you turn more RPMs. I don't know that I'd go through the expense just for 4.10s, but I'd imagine 4.56s or so would give that jeep a heck of a lot of pull. Of course, you'll be spinning much higher RPMs than you're used to. And Ripp is looking to put out a supercharger that should provide some fairly stunning increases in power.


What are the cons of regear? will it damage anything?

MTH 03-26-2012 05:34 PM

Quote:

Originally Posted by Ltblue (Post 2184667)
What are the cons of regear? will it damage anything?

Higher RPMs.

It just runs the engine harder. My guess would be that over time in probably shortens the engine lifespan--after all, you're putting in more rotations per mile than you would have otherwise--but I have no evidence to back that up.

There's no free lunch.

Ltblue 03-26-2012 05:34 PM

Quote:

Originally Posted by kik (Post 2184650)
Other than re-gearing, leave it alone. I did a dual cat back exhaust knowing that there was no increase in anything, but I like dual exhaust. I have 4.10's and I think it's a good way to go.

haha I know what you mean, I had a old 95 GC and I put a Flowmaster on it, just because I like the sound. Here is a video of my old but not forgotten ride

Jeep Grand Cherokee Flowmaster 40 Delta Flow - YouTube

kbwwolf 03-26-2012 05:37 PM

I've generally been avoiding gearing threads of late, but I will say this:

Dave @ AEV wrote awhile back that he thinks 4.10 gears are perfect for a '12 on 35" tires. I agree with this, to a point. If you live somewhere flat, like FL or NE, you should be fine. If you drive in mountains, you won't be.

Most peeps, when they think of gearing, are concerned solely with power gain. But mileage should be considered, as well. If you do it right, both will benefit. But it's a very fine line.

Choosing the right gear ratio for your Jeep takes a lot of research.

Some good general info in this thread: Want 35s dont want to REGEAR ??

hwy1rubi 03-31-2012 07:59 PM

Quote:

Originally Posted by kik (Post 2184650)
Other than re-gearing, leave it alone. I did a dual cat back exhaust knowing that there was no increase in anything, but I like dual exhaust. I have 4.10's and I think it's a good way to go.

I'm thinking of putting a Magnaflow on my 12, knowing I will not pick up more than 10 HP, but for me that is only a small part of the reason, the other is to get rid of that monster of a muffler on my Rubi.

northernjeeper 03-31-2012 08:36 PM

What about a 2011 with 33's and 2 inch lift, looking for better mpg's but more importantly power, 4.88's or 4.10's or 4.56's? Do quite alot of highway driving.

northernjeeper 03-31-2012 08:38 PM

Quote:

Originally Posted by northernjeeper
What about a 2011 with 33's and 2 inch lift, looking for better mpg's but more importantly power, 4.88's or 4.10's or 4.56's? Do quite alot of highway driving.

Oh ya, it's an auto.


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