Building a Budget Scat Pack: Best Mods Under $1,500
The Scat Pack is already fast. But $1,500 in the right mods turns a fast car into a seriously quick one. Here's the exact spend that experienced Scat Pack owners recommend for maximum results at this budget level.
Starting With the Right Platform
The 6.4L HEMI in the Scat Pack makes 485 HP stock. With 1,500 dollars, you're not going to double that number — but you can add 50–80 wheel horsepower, significantly improve sound, and dramatically sharpen throttle response. Done right, the car will be noticeably quicker in every gear.
The $1,500 Recommended Build
Step 1: Cold Air Intake (~$350–$450)
Start here. The 6.4L HEMI responds extremely well to better airflow, and the intake's gains compound with everything that follows. A closed-box cold air intake from Corsa, S&B, or K&N is the foundation.
Gain: 10–18 WHP on a stock tune; more with the tune in Step 2.
Step 2: Custom Tune on 93 Octane (~$400–$600)
A professional remote tune or dyno session on 93 octane, accounting for your intake, unlocks the full potential of what you've done so far.
With intake + tune: expect 25–40 WHP over stock. The tuner can also:
- Disable MDS (if desired)
- Improve shift firmness on the 8-speed
- Optimize torque management for better launches
- Raise rev limiter slightly (with supporting mods)
Step 3: Cat-Back Exhaust (~$500–$700)
With intake and tune maximizing engine breathing, an unrestricted cat-back lets exhaust gases exit more efficiently. More importantly, it transforms the sound — a tuned 6.4L with a good cat-back sounds extraordinary.
Recommended: Corsa Sport (controlled aggression), Borla S-Type (slightly more aggressive), or Flowmaster Outlaw (loud and raw).
Total Spend and Expected Results
| Mod | Cost | Expected Gain |
|---|---|---|
| Cold Air Intake | $400 | 10–18 WHP |
| Custom Tune | $500 | +15–20 WHP stacked |
| Cat-Back Exhaust | $600 | 5–10 WHP + massive sound improvement |
| Total | $1,500 | ~40–55 WHP total |
A 6.4L making 445 WHP stock will likely reach 475–495 WHP with this combination — a meaningful, seat-of-the-pants-noticeable improvement.
What's Next After $1,500
This combination is often called the "Stage 1" platform. Once you've done intake + tune + exhaust, you're set up for the next tier:
- Long-tube headers + revised tune: Another 25–35 WHP, $1,500–$2,500
- Camshaft: The big leap to 500–530 WHP, $2,500–$4,500 all-in
- Forced induction: The jump to 650+ WHP, $5,000+
Each subsequent tier builds on the previous. The CAI + tune + exhaust build is the right foundation for everything that follows.
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