Hey all, I just bought a 1990 GTU and then bought a street ported 13B NA to toss in. Whatever I did, it's drvin me nuts. When all was said and done... If the engine speed is under 2500 it cuts off, no matter what. Is that where the secondary injectors kick? I replaced all the lil seals (to the tune of $220 from the dealer) and it still won't work. ANy help appreciated highly, tired of constatnly revving just to like go to work Thanks again

 

They usually kick in at 3800 but if you happened to touch the tip on them on the engine some dirt may have stuck in the pintle which will cause them to stick open. Also make sure there are no vacuum leaks.