Durango SRT & Hellcat tune. Nashville.
A three-row that pulls like a muscle car deserves a tune that respects both jobs. We flash Durango SRT 392s and Durango Hellcats same-day at 1035 3rd Ave S - sharper throttle, real mid-range, a ZF eight-speed that finally shifts like it means it - and the 8,700 lb tow rating stays. Under the third row, the Hellcat Durango is the same animal as the Jeep Trackhawk, and it runs the same proven playbook here.
Every Carma tune includes.
Real prices, no dyno-number runaround. Here's what comes with every flash — at no extra charge.
What we do for the Durango.
Stage 1 on the Durango SRT is a same-day flash: we rework timing, fueling, and throttle mapping on the 6.4L 392, delete MDS so it never lugs around in four-cylinder mode, and recalibrate the 8HP70 so shifts land with the new torque instead of behind it. On the Hellcat, the supercharged 6.2 gets our proven pump-gas calibration plus the 8HP95 and AWD launch work. Typical gains run +25-35 whp on a 93-octane 392 and +60-80 whp on the Hellcat - honest ranges, not brochure math. You drop it off in the morning, we flash it and road-log it, and you tow the boat that weekend.
Every Dodge PCM from 2015 on is factory-locked, so your Durango needs our in-house PCM unlock ($350, one-time) before its first flash - we do it here, same visit, no mailing your computer across the country. The 392 under your hood is the same engine we tune in the Charger and Challenger Scat Pack, just working harder against 5,500 lb and a roofline, which is exactly why the trans cal and MDS delete matter more here. The Hellcat Durango runs our Trackhawk playbook at the $999 tier - same blower, same 8HP95, same AWD transfer case, proven on the same hardware. And if your idea of a tow rig leans even sillier, we tune the Ram TRX too.
- MDS delete on the 392 - full-time V8
- 8HP70 / 8HP95 trans calibration included
- AWD launch calibration
- 8,700 lb tow rating preserved
- Same-day flash, free return to stock
- $350 in-house PCM unlock for 2015+
Pricing for the durango srt & hellcat.
Mods we pair with this tune.
The Durango shares its speed-parts catalog with the Charger and Challenger, and the tow-rig mission adds a few of its own. Add any of these later and your re-flash is free.
- Cold air intake — More airflow for either engine; we adjust fueling so the 392 or the blower actually uses it.
- Long tube headers (392) — The single biggest bolt-on for the 6.4 - it needs a re-flash to cash in, and yours is free.
- Smaller upper pulley (Hellcat) — More blower speed means more boost; we recalibrate fuel and timing so it becomes power, not knock.
- 180-degree thermostat — Keeps intake temps and timing honest in Tennessee summer, especially with a trailer on the hitch.
- Catch can — Cheap insurance on a boosted or MDS-equipped Hemi - keeps oil vapor out of the intake and off your plugs.
No dyno-number games, no hard sell. Drive it, and if the tune isn't for you, we revert to stock at no charge. That's how confident we are in the map.
Common questions.
My Durango is a 2018 - do I need the PCM unlock first?
Yes - every Dodge PCM from 2015 on is locked at the factory, and that covers all Durango SRTs and Hellcats. We unlock it in-house for $350 in the same visit, no shipping your computer off for two weeks. It is a one-time job; once unlocked, every future flash is just a flash.
What does the tune actually change in the ZF eight-speed?
The 392 runs the 8HP70 and the Hellcat runs the 8HP95, and both get a transmission calibration alongside the engine tune. We raise torque limits, firm up line pressure, and speed up shifts so the box keeps pace with the new power instead of soft-shifting to protect itself. It feels sharper without turning your daily into a slap-shift science project.
I tow with mine - do I lose the 8,700 lb rating?
No. We tune around the tow rating: tow-haul logic stays intact and the calibration stays conservative on timing under sustained load, which is exactly where a heavy trailer lives. Tell us at drop-off if you tow regularly and we bias the tune that direction.
What is the MDS delete and why do you do it on the 392?
MDS is the cylinder deactivation that drops the 6.4 to four cylinders at cruise, and the special lifters that make it work are a known Gen 3 Hemi weak point. We disable it in the tune so you stay in V8 mode full-time - crisper response, no four-to-eight stumble, and one less lifter failure mode. You give up a little highway mpg for it.
Is the Durango Hellcat tune just the Trackhawk tune?
Functionally yes - same supercharged 6.2, same 8HP95, same AWD transfer case, so it runs our Trackhawk playbook at the $999 tier. The calibration accounts for the Durango's longer wheelbase, weight, and gearing, but the recipe is proven on identical hardware.
Can you dyno an AWD Durango?
Not on our rollers - our in-house chassis dyno is 2WD only, and there is no safe way to strap an AWD Durango to it. Instead we validate with street datalogging: timing, knock activity, air-fuel, and trans behavior under real load in real gears. You get the logs, not a guess.
Will it actually launch harder, or just spin?
Harder. We calibrate launch rpm and torque delivery for the AWD system so a 5,500 lb three-row hooks and goes instead of shoving through the front tires. On the Hellcat especially, the launch calibration is where most of the street-feel gain lives.
Book your Durango SRT & Hellcat tune.
Drop it off in the morning, drive it home tuned by end of day. 1035 3rd Ave S, Nashville, TN 37210 · Mon–Fri 8 to 5.