This secondary carburetor enhanced my vehicle's horsepower and fuel efficiency.As a RESULT of my tests i determined that my car is now running smoother and more efficiently than ever before. The high-quality polished aluminum design also adds a sleek and stylish touch to my automotive system. The only downside is that installation can be a bit tricky for those inexperienced with automotive parts. Overall, I highly recommend this product for anyone looking to improve their car's performance..