what are the best performance mods for the c7 corvette?

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Accepted Answer

Great question! The **C7 Corvette Stingray** has an excellent aftermarket and the **LT1** responds really well to modifications. Since you're looking at a **2015 Stingray 2LT with the 8-speed auto**, here are the best mod paths depending on your goals and budget:

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## **Stage 1: "Bang for Buck" Bolt-Ons ($1,500–$3,500)**

Start here—these give noticeable power without touching internals:

| Mod | Expected Gain | Notes |
|-----|---------------|-------|
| **Cold Air Intake** (Vararam VR-TCR-7, aFe Momentum GT, or Halltech) | +10–20 HP | No tune required; easy 30-min install. Vararam leads for heat soak resistance. |
| **Custom Tune (HP Tuners)** | +20–30 HP / +30 lb-ft | Essential! Wakes up throttle response, optimizes fuel, and maximizes other mods. E85 tuning adds another 10–15 HP if available in your area. |
| **Long-Tube Headers + X-Pipe** | +25–40 HP | Stainless Works, ARH, or Kooks. Adds sound and power; pair with tune to eliminate CEL and optimize AFR. |

**Your car already has the factory Performance Exhaust**, so you're ahead of the game there!

**Stage 1 Total:** ~450–475 rwhp (up from ~400 stock)

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## **Stage 2: Supporting Drivetrain ($2,000–$4,000)**

Before going forced induction, consider:

- **Flex Fuel Sensor** (~$600) – lets you run E85 for 10–15% more power on demand
- **Upgraded Heat Exchanger / Cooling** – the 8L90 auto benefits from keeping temps down during hard use
- **Shortened Rear Gears** (3.42 or 3.70) – your 2.41 gears are tall for efficiency; shorter ratios dramatically improve acceleration feel

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## **Stage 3: Big Power – Forced Induction ($7,000–$15,000+)**

When you're ready for 600–750 HP:

| Kit | Power | Notes |
|-----|-------|-------|
| **A&A Corvette Supercharger** (Centrifugal) | 625–700 HP | Designed specifically for C7; excellent cooling; most popular for reliability |
| **Magnuson TVS2300** (Roots-style) | 650–750 HP | Instant torque, OEM-like drivability; slightly more complex install |
| **ProCharger** | 600–800+ HP | Intercooled options; very tunable |

**Important:** The 8L90 automatic is stout but generally limited to ~700 lb-ft torque. If targeting over 650 HP, budget for trans upgrades or stick with centri chargers (which build power at higher RPM vs instant torque).

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## **Quick Recommendation for Your Car**

Given your **2015 2LT auto with 2.41 gears and Performance Exhaust**:

1. **Start with a Vararam intake + dyno tune** (~$1,200 total) – immediate 30–40 HP gain, better throttle response
2. **Consider shorter rear gears** (3.42) – transforms acceleration feel without adding power
3. **Headers next** if you want more sound + another 25–30 HP
4. **Supercharger** if you catch the bug—A&A's kit is the proven path for C7 autos

The C7 is an incredibly rewarding platform to modify. Want me to help you find intake or header options, or would you like to browse similar modified C7s in the market?

Also—what's your end goal? Street fun, occasional track days, or straight-line performance? That'll help narrow the best path for your build.

Lot STK01653T: 2015 Chevrolet Corvette Stingray 2LT

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Lot STK01653T: 2015 Chevrolet Corvette Stingray 2LT

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