I bought a Synapse missing link, is doing ok. But my friend has check valves, he said check valves works better. Is that true? Accord 2002 F23A1 Turbo

 

i have check valves. both should work the same. i dont know about one working better than one another..but hey, as long as it does the job

 

The missing link works fine and looks 110% better than a row of check valves

 

Check valves tend to malfunction sooner or later. Definetely install the missing link, you will be happy you did. It also looks a hell of a lot cleaner then having a 6 inch long octopus looking tenticle hanging around your intake manifold.