Page Information Updated July 15, 2018

It's with pride to be a premier tuner for the 3.6 Pentastar V6 found in your 2012-current Jeep Wrangler. Overkill specializes in making your Pentastar perform its best whether your Wrangler is a rock crawler or pavement prowler.

  • Dyno tested 25+ wheel horsepower gains over factory on 93 tune, 40+ horsepower gain on E85, doubles the gains of the preloaded Diablo tune
  • Tune purchase includes 87 octane, 91, 93 octane and E85 tune (if flex fuel) calibration files plus custom revisions based on scans for your vehicle
  • Significant torque gains in the mid-range
  • Improved throttle response and feel, smoother acceleration at all throttle positions
  • Fuel mileage potential is improved (3MPG improvements reported on 91 octane)
  • Reprogramming available for lower temperature thermostat, highflow cat converter replacement, intake and exhaust modifications.
  • No Charge Retuning for as long as you own your Pentastar vehicle!
The gains speak for themselves:
Customer#1 0-60mph times...Stock 6.4-6.5...Diablo 6.1-6.2...Overkill 5.7-5.8
Customer #2 Pro Torque Horsepower...Stock 226whp...Diablo 248whp...Overkill 269whp

Customer #3 Dyno Tested Overkill E85 Tune 266whp vs 261whp from a Competitor's E85 custom tune, with max gain of 8whp non-peak
Customer #4 Dyno Tested Overkill E85 Tune 267whp vs 238whp from Diablo preloaded tune, a 29 wheel horsepower gain
Customer #5 Using Overkill 91Plus tune dropped .7 seconds from 0-60 vs factory tune, .3 seconds 0-60 vs Diablo preloaded tune

What Makes Overkill Pentastar tuning the right choice:
  • E85 Tuning - Thanks to the efforts of Diablosport and Overkill Motorsport, there is proper E85 Pentastar tuning capability since October 2014. We continue to lead the way in Pentastar E85 tuning.
  • Throttle Body Programming - Rather than bump the factory throttle curve up 10-20%, we reslope it properly with a smooth curve, to provide better and more natural feel. We also responsibly program part throttle fueling to match the throttle opening rate, something preloaded and competing tunes don't do.
  • Knock sensors are enabled at a lower engine rpm versus the factory programming in many instances, improving engine safety
  • Fuel Injector Calibration is improved over poorly programmed factory settings, an Overkill exclusive feature, which improves fuel economy
  • Each tune file is hand written to ensure you get the right programming and the best results

If you already have a Intune or Trinity from Diablosport, upgrade it by purchasing Overkill tuning. You'll get all the Overkill tune files that we include when buying the Diablo device from us, plus custom datalogging tuning services. Overkill tunes load to your vehicle just like the Diablosport preloaded tunes. Once purchased below, send both original backup and last tune written files from your handheld to to receive your Overkill tunes back.

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Enter Car's Modifications

The only TRUE larger throttle body is proudly available from Overkill Motorsport. Rather than porting the factory throttle body, our kit adapts a true 80mm sized throttle body to replace the factory 74mm unit. Dramatically improved throttle response, improved breathing and horsepower at higher rpm, and a throatier engine note will all be noticable. Works well on the factory intake manifold, and even better with inlet porting to match.

This kit includes:
  • 80mm throttle body (choice of remanufactured/refurbished or brand new)
  • Aluminum adapter plate
  • Plug and play wiring harness adapter
  • Stainless steel fasteners
  • A custom made gasket throttle body gasket
Tech Tip: The factory throttle body has a clamping area (where the tubing attachs) of 80mm, while this throttle body is 87mm. You should have a solution to clamp to the larger throttle body ready to go beore installing. The factory tubing will NOT fit this throttle body.

Make Your Selection

The lower intake manifold has a significant flow restriction in its casting. This ported intake manifold fixes that flow restriction and adds a dyno tested 7 wheel horsepower with a tune and air intake as the only other modifications, good bang for the buck. This is a brand new manifold and we don't require your old manifold to be sent in. Can be done at any point in your modification journey with good results.