MY AUDI R8 LOST HUGE POWER!
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Get Surfshark VPN at surfshark.deals and enter promo code MATARMSTRONG for 84% off and 4 extra months for free! My Audi R8 felt under powered so i took it to @MalloryPerformance to run it on the Maha dyno with help from @Phil-Cooper & i was right... it was severely underpowered. Could it be carbon build up which is causing the loss along with poor injectors. Ill soon find out.
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The video documents a hands-on diagnostic and remediation process on a 4.2 liter Audi R8 that has reportedly lost significant power after extensive driving and potential carbon buildup. The host goes to Mallory Performance to dyno the car on a Maha dyno to verify horsepower and torque losses, with initial results showing a disappointing 350 bhp on the first run, far below the 414 bhp target and well under the factory numbers. The host explains how direct injection engines are prone to carbon buildup on the intake valves, which can throttle performance, and lays out a plan to address it. The plan involves removing the intake manifold, walnut blasting each intake port, and inspecting or cleaning the injectors for proper spray patterns. The video captures the methodical teardown, the painstaking walnut blasting process, and the injector testing and resealing, all performed with a do-it-yourself mindset to save on professional costs. Finally, the host reflects on the effort, acknowledges the physical toll of the work, and tees up a follow-up video where the rebuilt setup will be tested again on the dyno to chase the factory or higher power targets. The narrative emphasizes practical car maintenance, the realities of carbon buildup, and the potential gains from proper cleaning and injector service, while also highlighting sponsorships and deals linked to the channel. The overall aim is to restore peak power and demonstrate a transparent, educational, and entertaining approach to automotive optimization. The video blends procedural troubleshooting with personal determination, offering viewers a window into the realities of high-performance car maintenance. The next installment is anticipated to reveal whether the power deficit can be reversed through the implemented cleaning, injector refurbishment, and potential remapping.
Topics · car maintenance · car diagnostics · engine tuning · diy car repair · auto repair and maintenance · performance modification
Questions answered
- What is carbon buildup and how can it affect a direct injection engine like the Audi R8’s 4.2 V8?
- Carbon buildup occurs when fuel residues accumulate on the intake valves in direct injection engines, reducing airflow and efficiency, which can lead to power loss and poorer throttle response.
- What maintenance steps were taken to diagnose and address the power loss in the R8?
- The steps included dyno testing to quantify power loss, removing the intake manifold, walnut blasting to clean carbon from intake ports, inspecting and cleaning injectors, and preparing for injector resealing and reassembly.
- Why is injector testing and resealing important after cleaning the intake, and what does it involve?
- Injector testing ensures spray pattern, flow, and leaks are within spec; resealing replaces worn seals with graphite seals to prevent future leaks, and to ensure accurate fuel delivery after cleaning.