hey guys i have a 91 n/a fc and the secondary injectors are not comming on. Every time you open the throttle to where the secondaries open up in the throttle body it lean pops bad. any help??

 

Search for the 3800 rpm hesitation and try those fixes. Sometimes it's a grounding issue at the ECU which makes the secondaries act funny. Also check and make sure they are plugged in and actually working as well. The FSM should show you how to verify whether or not they are functioning properly.