i just picked up a 94 Honda civic with a jrsc,aem fuel rail,dc sports 4-1 header,msd ignition ,aem intake,chipped ecu, looks like stock exhaust with an aerospeed muffler.it also came with an aem adjustable cam gear and new pulley for 12 psi.
runs good until i drive for like 15 minutes then it starts losing power and runs bad under 4k rpm. this is my first sc car. i was told if i got a p28 ecu it would run better. could the exhaust have something to do with it? how much is a tune if needed?

 

o wow I can't believe noone has answered this. A tune is 100% needed, if you try and run a supercharger on a stock ecu you will blow your motor asap. Get it tuned before driving it.

edit: I see you have a chipped ecu, I would talk to the original owner and find out what it is tuned for/ what's on the chip as it may already be tuned.

 

Doesn't jackson racing supply its own management system with the kits? im pretty sure if you look around you could find one.