hi guys. got a slight problem. when i want to come on boost above 10 psi the car begins to stutter and pink out. im am going towards the fuel pump not getting 12volts idea.
am i right or could it be something else?
the boost doesnt drop of.
its a stage 1 4x4. plus it only does it from third gear to 5th cause obviously there less strain on the engine and pump in the lower guys i guess.

 

how are the plugs?