okay so last week my pulsation damper gave out. took it to a shop they changed that and also one of my secondary injector.

since i got it back the car shakes like a mother while warming up. the car also has a big hesitation 1.5k and 4k. also a big decrease in power. before i took it to the shop the car never did this. anyone know what the problem is?

 

Probably a massive huge vacuum leak.

 

You should also check for fuel. Maybe the shop screwed around with your primaries.

 

Maybe the secondary injector they installed is bad? Was it new? Used? Properly tested and cleaned? Perhaps they connected the primary injector plugs to the secondaries?

Either way, they screwed it up so they need to fix it at no cost to you.