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The Mazda 13B-REW engine has gained a cult following among car enthusiasts for its unique rotary design and impressive performance capabilities. Many owners have pushed their 13B-REW builds to exceed 400 horsepower while keeping costs manageable. In this article, we will explore real owner reviews of 13B-REW builds that have successfully achieved this power threshold on a budget.
Understanding the 13B-REW Engine
The 13B-REW is a part of Mazda’s renowned Wankel rotary engine family. Known for its compact size and lightweight design, the 13B-REW is favored for performance builds due to its high power-to-weight ratio. Here are some key features of the engine:
- Displacement: 1.3 liters
- Configuration: Rotary, twin-rotor
- Power Output: Stock models produce around 280 hp
- Lightweight: Weighs significantly less than traditional piston engines
Owner Review Highlights
We gathered insights from several owners who have successfully built their 13B-REW engines to exceed 400 hp without breaking the bank. Below are some standout reviews and their modifications.
Owner 1: The Street Racer
This owner transformed their 13B-REW for street racing, achieving an impressive 420 hp.
- Turbocharger: Upgraded to a BorgWarner EFR 7670
- Fuel System: Installed a Walbro 450 lph fuel pump
- ECU: Tuned with a MegaSquirt standalone system
- Exhaust: Custom 3-inch exhaust system
The owner reported excellent throttle response and a significant boost in power, especially at higher RPMs.
Owner 2: The Weekend Warrior
This build focuses on a balance between daily drivability and track performance, reaching 410 hp.
- Intake: Installed a cold air intake system
- Turbo: Garrett GT2860R turbocharger
- Intercooler: Front-mount intercooler for better cooling
- Tuning: Professional tune with a DynoJet
The owner emphasized the importance of a proper tune to maximize performance and reliability.
Owner 3: The Drift Enthusiast
This owner built their 13B-REW specifically for drifting, achieving a peak of 450 hp.
- Boost Controller: Installed a manual boost controller
- Suspension: Upgraded coilovers for better handling
- Brakes: Big brake kit for improved stopping power
- Weight Reduction: Removed unnecessary components to reduce weight
This build prioritizes handling and control, essential for drifting, while still delivering significant power.
Cost-Effective Modifications
Achieving 400+ hp on a budget is possible with the right modifications. Here are some cost-effective upgrades that many owners recommend:
- Used Parts: Consider sourcing used turbochargers and parts from reputable sellers.
- DIY Tuning: Learn to tune the engine yourself to save on labor costs.
- Community Knowledge: Engage with online forums for tips and shared experiences.
- Local Shops: Find local performance shops that offer competitive rates on installations.
Challenges and Considerations
While building a 13B-REW engine for 400+ hp can be rewarding, it also comes with challenges. Here are some considerations:
- Reliability: Higher power outputs can strain engine components.
- Heat Management: Adequate cooling is essential to prevent overheating.
- Insurance: Modified vehicles may have higher insurance premiums.
- Legal Regulations: Ensure that modifications comply with local emissions laws.
Conclusion
The Mazda 13B-REW engine offers incredible potential for power and performance. With the right modifications, owners can achieve over 400 hp without spending a fortune. By learning from real owner experiences and focusing on cost-effective upgrades, enthusiasts can enjoy the thrill of rotary performance on a budget.