HOW TO ADD 100 HP TO YOUR LS-POWERED VEHICLE

GO WITH “FULL BOLT ONS” TO ADD BIG POWER TO YOUR LS VEHICLE

INTRODUCTION

If you’re looking to add around 100 (CRANK) horsepower to your LS-powered vehicle, the right combination of bolt-ons and tuning can deliver impressive gains. If you buy the parts and install them yourself, then add a dyno tune, you can keep your budget around $2,350. If you pay a shop for the installation labor, your total is closer to $4,870. Focus on upgrades that improve airflow in and out of the engine and finish with a proper calibration.

1. Cold Air Intake ($300–$400)

A cold air intake is a great starting point for any LS build; they look good and sound good. Choose a well-insulated intake that keeps hot under-hood air out.

  • Cost: $300–$400 (aFe, JLT, Holley)
  • Gains: ~10 hp at high RPM (≈6,000+)
  • Benefit: Better sound and a slight top-end increase; heat shielding helps maintain cooler IAT.
  • Install time: 1–2 hours

2. Long Tube Headers ($700–$900)

Long tubes are one of the highest-value LS upgrades. The primary lengths/diameters are tuned for the scavenging effect: as exhaust leaves one cylinder it helps pull gases from the next, improving cylinder filling.

  • Cost: $700–$900 (Speed Engineering, etc.)
  • Gains: 20–30 hp
  • Benefit: Stronger mid-to-top power, better tone, reduced backpressure.
  • Install time: 4–8 hours

3. Cat-Back Exhaust ($400–$800)

Pair headers with a high-flow cat-back to reduce restrictions and complement the scavenging effect.

  • Cost: $400–$800 (Magnaflow, Speed Engineering, Texas-Speed)
  • Gains: 10–15 hp when paired with headers
  • Benefit: Deeper sound, lower backpressure, a bit more power.
  • Install time: 2–4 hours

4. Dyno Tune

After intake/headers/exhaust, a calibration ties it all together—optimizing AFR, ignition, torque management, and throttle behavior for safe, repeatable gains.

  • Typical cost used in this example: $650
  • Gains: 25–35 hp from the tune alone, plus “stacked” gains by optimizing all mods
  • Benefit: Maximum performance with reliability and drivability

Installation Time and Service

Installing the full package (intake + long tubes + cat-back) typically takes 7–14 hours.

Labor rate: $180/hr

  • Estimated labor range: $1,260–$2,520 (7–14 hours × $180/hr)
  • Full-day example: $2,520 (14 hours × $180/hr)

Time varies by model, hardware, and corrosion/fasteners. Headers are the biggest variable.

Budget Breakdown

ItemCost (example)
Cold Air Intake$300
Long Tube Headers$800
Exhaust System$600
Dyno Tune (example)$650
Parts + Tune Subtotal$2,350
Labor (7–14 hrs @ $180/hr)$1,260–$2,520
Turnkey Total (parts + tune + labor)$3,610–$4,870

Power Gains Summary

  • Cold Air Intake: ~+10 hp (top end)
  • Long Tube Headers: +20–30 hp (scavenging)
  • Cat-Back Exhaust: +10–15 hp
  • Tune: +25–35 hp (+ stacked optimization)

Conclusion

Adding ~100 horsepower to your LS is realistic with the right bolt-ons and a proper calibration. We can supply, install, and tune the complete package so everything works together—and sounds the part.

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Pricing shown is for planning. Parts brands/options vary. If you’d like this tailored to your vehicle and goals, reach out—we’ll quote the combo that fits.