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How do I get better low end performance?

7K views 50 replies 10 participants last post by  Scottina06 
#1 ·
I'd like to get more acceleration off the line. I feel like the Diablo tune has helped the acceleration in the higher gears, but I feel like it's still missing in 1st and 2nd gear. What kind of mods can I do, or custom settings can I set on the Diablo to make this better?
 
#3 · (Edited)
I'd like to get more acceleration off the line. I feel like the Diablo tune has helped the acceleration in the higher gears, but I feel like it's still missing in 1st and 2nd gear. What kind of mods can I do, or custom settings can I set on the Diablo to make this better?
(dumb advice)

Here's Air raid
"The PowerAid® was developed to enhance your vehicle’s off idle to mid range performance and efficiency. "
 
#7 ·
do thry make gears for the 4.7
 
#9 ·
yes
 
#11 ·
what differnce should it make ?
 
#12 ·
They make gears for them.

Its got 3:73s now, if you put a set of 4:10s in it and get good quality Yukon or Superior gears you will have life time warranties on the gears as long as they are professionally installed. But your looking at $500 an axle base price for most shops to do the install and about $250 for gears and install kits.

with 4:10s you would roast them off the line with near stock size tires.
 
#13 ·
so they dont make 410 gears for 07 4.7
 
#14 ·
well I don't know but I'm pretty sure the aftermarket doesn't make different gearing for a ford explorer or escape.

In english, it should make finding gears easier.

---------- Post added at 05:02 PM ---------- Previous post was at 05:01 PM ----------



I think it's a factory option so you might be able to get some through mopar.
 
#15 ·
The engine means nothing when it comes to gears.

You just need to call up a place that sells gears for ex, summit racing.com, and tell them what you have and what you want. They will set you up right.

The only thing that matters when you buy gears is the axle. I am not sure what the front is called but the rear is a chry 8.25 axle (but its different from the 8.25 in a regular cherokee.
 
#16 ·
so i would have to change both \

---------- Post added at 05:06 PM ---------- Previous post was at 05:06 PM ----------

does any body got the 410 gears
 
#18 ·
Yes you need to change front and rear, they cannot be different from eachother.

Just go to (ouch this hurts to say) Jeepsunlimited and ask in the WK section where to get 4:10 gears for a WK. There are more off roaders on there that can help.
 
#19 ·
well i noticethe difference
 
#21 ·
You will notice a 110% different by going to a lower gear. The higher the number the lower the gear ratio.

For instance my Xj had 3:55 gears stock with the 4.0 6 cyl and auto tranny. When i put 35" tires on it i had 4:56 gears installed to get my power back, but i should have gone lower to 4:88s to get more torque.

For you, id say 4:10s will be perfect for stock or larger tire and wheel combos and you will notice alot more torque. You will kit the gas from a stop (with stock size tires) and you will feel like it wants to launch off the line.

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With stock tires and 4:10s, you can put the jeep in drive and get out and walk beside it up a slight up hill.
 
#22 ·
so nhwk05 since you have done this before what is all i have to do to chage mine out ?
 
#24 ·
You, Nothing. A trained professional should be the only person to do gears. It is super duper sensitive.

Thats why i said it will cost some coin to get it done.

Ask dylan to see if he can get you info on a set of 4:10 gears for the front and rear of your jeep and installation kits. Prolly going to cost about $500 ish total for parts. Then find a shop that will give you a reasonable rate to change the gears. Reasonable is between $500 to $700 PER AXLE. CALL AROUND.

I had my gears in the rear axle setup by a friend that claimed to know what he was doing. a few months later i had to spend $1000 locally to have the entire rear axle rebuilt because he screwed them up and the gears were groaning because they were 100% installed wrong. Had to buy all new gears and get them put in.

Once installed you need to be nice and easy on the truck for 500 miles. then change out the fluids. Thats the break in time.
 
#25 ·
nice i have money just want then and i want them done right lol...

---------- Post added at 05:25 PM ---------- Previous post was at 05:24 PM ----------

whos dylan..?
 
#27 ·
so 410 gears will fit in my stock drive train
 
#28 ·
Yes, You just need to find a company that sells gears and then find out if they sell a brand of gear that will fit your jeep.

Try, summitracing.com, they are typically the biggest retailer of stuff like that, but there are thousands of retailers that will sell gears and can find you gears for your jeep.
 
#29 ·
thanks man for the info
 
#30 ·
No problem, if i know i helped you do it the right way and your happy with the out come i am glad to be of service.

BTW, do me a favor, grab a tape measure or yard stick and measure your tires from ground to top of the tire.
 
#31 ·
ok

---------- Post added at 05:38 PM ---------- Previous post was at 05:36 PM ----------

30''
 
#33 ·
nice thanks man
 
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