Problem i have is that it has hard starting when cold or hot, and when i put the key in to prime the pump i hear nothing so i have to start the car and give it a little gas than it starts. but if i turn the car off qucikly i try to prime the pump it primes? also i get a check engine light after about 20-30mins of driving the car comes on when i stop off when i pull away and thats it never comes back on untill the car is started later in the day. I have no other problems no stalling, no stumble, pulls hard to about 6k, no fuel smell.

95 lt1 bolt-ons, slp cai, madz tune, racetronix 255lph pump with less than 500 miles on it along with new sock and filter.

 

Pull that code and tell us what it is. And do a fuel pressure check.