Charger / Challenger Scat Pack tune. Nashville.
The 6.4 Hemi 392 in the Scat Pack is a naturally aspirated platform that responds well to tuning — easy 30+ wheel hp on Stage 1 with 93 octane. Long-tubes + intake territory is where it really starts to show its potential.
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 / challenger scat pack.
Stage 1 on the 6.4 optimizes spark and fueling across the RPM band. Stage 2 with long-tube headers, off-road mid-pipe, and cold air intake is where customers see real returns — 580+ wheel hp at the crank is the norm with the bolt-on path mapped correctly.
- Factory file pulled and archived (free stock-revert anytime)
- Custom-mapped for your exact mod combination
- Safe map flashed and road-tested in-house
- Cam-swap mapping covered for built engines
- Lifetime support on revisions
Pricing for the charger / challenger scat pack.
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.
Does the 6.4 need PCM unlock like the Hellcat?
No — the 6.4 PCM is not write-locked. Standard ECU flash, no unlock fee.
Stage 1 vs Stage 2 difference?
Stage 1: 30–35 wheel hp on stock. Stage 2 with long-tubes + intake: 75–110 wheel hp. Cam-swap builds push well past 580 wheel hp.
What octane is required?
93 octane minimum for Stage 1 or 2. The 6.4 pulls timing aggressively on lower octane.
How long does the appointment take?
Stage 1: 2–3 hours. Stage 2 with parts to install: full day.
Book your Charger / Challenger Scat Pack 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.