right when it hits 1psi at around half throtle but after it gets past one or two psi it will smooth back out already checked timing, changed cap, rotor button, map sensor, plugs,wires. Is it possible for the missing link to go bad it's a synapse and i'm running a z6 with the apexi kit if you would just let me know what you think it could be

Thanks
josh

 

Check the gapping on your plugs, sounds like at first they may be blowing out.

 

there gapped at 40

 

Thats sounds about right. Try gapping them closer and see what you get.

Maybe too much fuel.