hey guys, i have a 00' LS in a 91 integra running obd0 never had a problem with it for about the year i have had it. recently the car has started stuttering, in neutral i can rev the car fine has no break up in the rpms, if i put the car in 1st and take off the car is stuttering from 1k-3.5k and after that it runs fine when its stuttering the car has no power almost like there is no fuel or spark is off, when it does it the car is sputtering and making low level backfires, and then once again after about 3k it stops, car idles fine no vacuume leaks the only thing that is wrong is i have a exhaust manifold stud broken, but it dosent seem to leak. if anyone has any suggestions that would be great, al.so have a msd blaster coil installed, thought about going back to stock

 

check fuel pressure. sound like its fuel related.

 

check the basics.. such as tune up status i.e plugs wires cap rotors, obviously stated earlier fuel pressure and go on from there

 

also the exhaust leak does bog the car a little during low rpm/speed