You should be upset....last time I got injectors, they were sent overnight and cost me $0. The difference being I knew exactly what I wanted, why I was upgrading, along with who my tuner was and their blessing on injector make and sizing. You should be very upset that you purchased something without researching the issue to the ends of the earth regardless of payment amount. Research is what separates people like me with 2 times stock horsepower at 160,000 miles and people who have to buy new motors and/or sell their car within 2 years. This isn't me being an e-thug....this is about me sharing proper methods that will save you thousands.