Weistec Engineering Promo Codes & Coupons November 2026

Precision-machined for a direct bolt-on installation, this kit is essential for tuned and high-output V12 builds. Protect your turbos for $799!

Engineered for safety and reliability, our calibration removes factory speed limiters, smooths out power delivery across the entire RPM band, and preserves essential OEM engine protection strategies. Transform your driving experience for $1,199.

Unleash your vehicle's full potential with a 40% saving on our professional VMAX Removal service.

Active and retired military personnel receive a percentage off all physical hardware products. Verification may be required.

Experience an exhilarating exhaust note with 40% off our Pop and Bang Tune.

Achieve optimal engine performance and fuel efficiency with our Dyno Tuning Service, now 25% less.

Unlock superior engine performance for your BMW S55 with 30% savings on our advanced ECU tune.

Enhance your fuel delivery system with a $150 reduction on the high-performance Fuel Rail Kit.

Protect your turbocharger with a 30% discount on the essential Anti-Surge Valve, ensuring smoother operation and longevity.

Achieve perfect engine calibration with 22% off our Dyno Tuning Service, ensuring maximum power and efficiency.

Find various billet oil caps and oil filter caps priced below one hundred dollars. These are aesthetic and functional upgrades.

Upgrade your Mercedes-Benz SLR with our formidable Biturbo System, now available with a 10% discount for a significant power boost.

Achieve perfect handling and ride height with 17% off our Adjustable Suspension systems.

Members of specific automotive forums get a discount on McLaren 720S ECU Tuning. Proof of forum membership is necessary.

Unlock extreme power with a $2500 reduction on the SLR Biturbo System, engineered for ultimate performance.

Upgrade your braking performance with 35% off Brake Rotors, providing enhanced safety and durability.

Specific spark plugs and coil pack sets are available at a reduced clearance price. Stock is limited on these items.

Upgrade your vehicle's performance with a 15% discount on the W.3 Turbo Upgrade, delivering significant power gains.

Achieve cooler intake temperatures and increased power with 35% off our water-methanol injection system. Perfect for forced induction setups.

Upgrade your vehicle's transmission with a 25% discount, ensuring improved durability and performance.

Unlock the full potential of your SLR with 10% off the Biturbo System, delivering a significant boost in power and acceleration.

Secure your turbocharger's longevity with 10% savings on the Anti-Surge Valve, preventing compressor surge.

Find a discount on adjustable suspension components for various models. This deal is active for Cyber Monday.

Special pricing applies to suspension lowering links during the Black Friday event. Adjust your vehicle's ride height.

Experience smoother and more responsive gear changes with 35% savings on our premium Transmission Upgrade.

Unleash the full potential of your McLaren 720S with 20% off our precision ECU tuning.

Elevate your vehicle's performance with a 15% reduction on the W.3 Turbo Upgrade, delivering significant power gains.

Upgrade your vehicle's performance with 15% off the W.3 Turbo Upgrade, delivering significant power gains.

Orders exceeding the specified amount qualify for complimentary standard shipping. Some exclusions may apply to oversized items.

New customers can get a percentage discount on their initial purchase. This offer is valid once per customer account.

Experience improved airflow and a sportier sound with our Carbon Fiber Intake, now with 10% savings.

Upgrade your vehicle's transmission for improved shifting and durability with 25% off this essential modification.

Experience unparalleled power with 15% off the Pagani Huayra Power Upgrade, crafted for extreme performance.

Enhance your engine's breathing with a 30% reduction on our premium Carbon Fiber Intake Systems.

Unleash the full potential of your M157 engine with 20% off our advanced ECU tune. Experience significant gains in horsepower and torque.

Unlock the full potential of your BMW S55 engine with our ECU tune, now 30% off, delivering improved horsepower and torque.

Experience improved engine breathing and aesthetics with an 18% discount on our premium Carbon Fiber Intake.

Experience a new level of driving with 25% off the BMW S55 ECU Tune, engineered for peak performance and responsiveness.

Get a percentage off select anti-surge valves for turbo applications. This component helps maintain boost pressure.

Enhance your vehicle's cooling efficiency and performance with our Intercooler Upgrade, now 20% off.

Unlock your McLaren 720S's true potential with 25% off our expert ECU tuning services. Experience unparalleled performance.

Upgrade your exhaust system with our high-performance downpipes, now available with 30% savings for improved flow and sound.

Boost your engine's efficiency with 15% less on the Intercooler Upgrade, ensuring optimal temperature management.

Unlock your McLaren 720S's full potential with 25% off our advanced ECU Tuning, delivering significant horsepower gains.

Purchase a W.3 Turbo Upgrade and receive a percentage off accompanying downpipes. Both items must be in the same order.

Improve your vehicle's braking performance with an 18% discount on high-quality Brake Rotors.

Elevate your BMW S55's performance with a 20% reduction on our custom ECU tune, delivering enhanced power and responsiveness.

Achieve peak engine performance with a 12% discount on our expert Dyno Tuning Service.

Specific performance packages are discounted for a limited time. These bundles combine popular upgrades.

Protect your engine from oil blow-by with 10% off our essential oil catch can system, ensuring cleaner intake and longevity.

Experience smoother, faster shifts with 25% savings on our Transmission Upgrade.

Get a special price on the M157 ECU Tune for Mercedes-Benz vehicles. This applies to the software upgrade only.