Performance Optimization Platform

Unlock Your Car's True Potential

TierTuner helps you compare, tune, and optimize performance upgrades across all car tiers. From entry-level builds to professional racing setups.

500+
Tuning Guides
50K+
Community Members
1M+
HP Gained

Featured Cars

Popular models with comprehensive tuning guides

Honda Civic Type R
Entry

Honda Civic Type R

320 HP Stock

BMW M3 Competition
Mid

BMW M3 Competition

510 HP Stock

Porsche 911 GT3
Pro

Porsche 911 GT3

502 HP Stock

Subaru WRX STI
Entry

Subaru WRX STI

310 HP Stock

Nissan GT-R
Mid

Nissan GT-R

565 HP Stock

McLaren 720S
Pro

McLaren 720S

710 HP Stock

Tiered Upgrades

Choose your performance path based on budget, goals, and experience level

Entry Tier

Perfect for beginners looking to enhance daily drivers

Key Upgrades:

  • Cold Air Intake
  • Cat-Back Exhaust
  • ECU Tune (Stage 1)
  • Performance Air Filter
Power Gain:+30-50 HP
Est. Cost:$1,500 - $3,000
Mid Tier

Serious performance for track day enthusiasts

Key Upgrades:

  • Turbo/Supercharger Kit
  • High-Flow Downpipe
  • ECU Tune (Stage 2)
  • Upgraded Intercooler
Power Gain:+80-150 HP
Est. Cost:$5,000 - $12,000
Pro Tier

Professional racing builds with maximum output

Key Upgrades:

  • Built Engine Internals
  • Custom Turbo Setup
  • Standalone ECU
  • Full Exhaust System
Power Gain:+200-400 HP
Est. Cost:$15,000 - $40,000+

Dyno Results

Real-world performance data comparing stock vs tuned configurations

Peak Power Gain
+110 HP

35% increase over stock

Peak Torque Gain
+95 lb-ft

28% increase over stock

0-60 MPH Time
3.8s

1.2s faster than stock

Power Curve Comparison
Horsepower vs RPM - Stock vs Stage 2 Tune

Community Reviews

Real builds, real results from our passionate community of car enthusiasts

MC

Marcus Chen

+45 HP

2021 Honda Civic Type R

"Stage 2 tune completely transformed my Type R. The power delivery is smooth and the gains are exactly as advertised. TierTuner's guide made the whole process straightforward."

SM

Sarah Mitchell

+120 HP

2020 BMW M3

"Best investment I've made for my M3. The mid-tier upgrades gave me incredible performance without sacrificing reliability. The community support is outstanding."

JR

Jake Rodriguez

+180 HP

2019 Porsche 911 GT3

"Pro tier build on my GT3 exceeded all expectations. The dyno results speak for themselves. TierTuner connected me with the best tuners in the business."

ET

Emily Thompson

+38 HP

2022 Subaru WRX STI

"As a first-time tuner, the entry tier guide was perfect. Clear instructions, realistic expectations, and amazing results. My STI feels like a completely different car."

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