Now that you’ve completed every available scrapyard modification for your TE Primera, you now have a car that weighs around 1200kgs, and packs anywhere from 120kW–220kW at the wheels depending on how wild you went. You have a car that is very capable at the race track that will out-handle and out-brake a lot of other affordable cars on the market, even some big dollar cars like the Mitsubishi Evos. The Nissan SR20 engine is one hell of an engine from the factory, but you do need to keep them maintained for engine longevity, especially if turbocharged. They have very small oil galleries, which, if not properly maintained with frequent oil changes, can block up very easily and starve the head of oil. None of the above engine modifications should be completed if you have an unhealthy engine or vehicle. Make sure to give your engine a once over before starting, and ensure you have a solid base to make some good power. Another thing to note, SR engines have quite a small oil capacity, so when hitting tracks like Hampton Downs Raceway, ensure you have a baffled, or larger capacity sump. Another thing to note when retaining the airflow meter set-up, is don’t run oiled filters such as the K&N filter. These will coat the ‘hot wire’ inside the AFM, which will result in poor fuel ratios, loss of power, and a higher fuel consumption.