I can't take it any longer. Can anyone with personal experience recommend a tuner that rids the lack of power until 1,500 rpm when this thing takes off like a raped ape? I see in Ads that they increase throttle responce, but I want my power right off idle like every other engine I've ever had. None of these say that so I'm asking here. Thanks

 

I've been running the Diablosport Trinity since they released support for the 2013's and the 93 octane tune is pretty stout I think. It pulls everywhere in the RPM range if you want it to. I have been pleased with it. To my knowledge this is the only tuner for the 3.6 besides the Hypertech which is a piggyback harness offering up under 5hp gains which I decided to pass on.

Hope this helps

 

A 3.6 with less power than a 3.8 Our's will snap your head back from a stop

 

The 3.6 does have more power, just not much below 1500 RPM's. When mine was new it was really bad. It didn't want to pull sixth with 32" tires, and 3.21 gears at anything below 65 MPH. Now that it is broken in, I think (14,000). I can put it in sixth on my way to work 45-55 MPH, and it will maintain speed. I don't have any passing power, but it will go up & down hills at those speeds. If I need to pass I just bring it around to Fourth, and press down on the loud pedal. That gets her above 2000 RPM's.
I really notice the lack of power down low after I drive my 98 XJ with a 4 liter. That old inline six was the best engine for a Jeep. It grunts right from the bottom, but the JK does jump up & scream better.

 

I recall a thread on here recently from Super Chips and they were asking for people to buy and test their new tuner.

 

Have you re-geared? if you are still running the stock gears that may be your problem. a tuner is not really going to fix improper gearing. What are you running?

 

I think the issue is the electronic throttle instead if being hooked up with a cable. There is a delay from the time you hit the gas until the time you get a response. I don't like it either.

 

maybe it's your 3.73's and 35" tires. I've never noticed any acceleration problem with my Rubicon with 4:10 gears and stock 32" tires. But maybe I haven't paid attention to low rpm power either?

 

Take your foot off the gas while cruising along and then press it again. There is a noticable delay off throttle to on throttle with these Jeeps.

 

My 2014 with 35s and 3.73 gears pulls hard from a stop or even from low throttle. No hesitation. The 2011 i used to have was a slug compared to this. Is there something amiss maybe?