Ok I just dropped an Ls into my crx,starts right up(did the dpfi to mpfi conversion.)but wont rev above 3g,soo i check the codes n its a code 4,So i get a distributor off my buddy's integra which is perfect and it starts up runs(kinda rough) then it runs perfect for like 5mins shut it off and welcome back code 4..whats up?anyone who can help it'd be greatly appriciated.Thanks