I have been toying with the idea of replacing either the injectors or fuel pumps next (both are a bit pricey). Car has 188K. Once it's started, it idles and performs well but lags on takeoff. Now, I did buy a performance chip that I connected to the air intake sensor and noticed a substantial improvement in starting, idle, acceleration, and power but switched it back to just the air intake sensor to see the difference in mpg. That's when I noticed that this thing is lagging and doesn't seem like it should have to. What would you go at first...injectors or fuel pumps?

Steve