OK, I've been reading the "ditch your stock injectors' thread over and over, checked the links, read all (well mostly all) the various interchange info, flow rates etc.

It appears the F1ZE B4C injectors are only 14 lb injectors (listed for the 3.8 litre engines on Motor Man's page http://www.fuelinjector.citymaker.com/contact.html) I would really like to replace mine with 15lb disk type injectors but where to get them and which number is the right one seems to be a bit of a mystery after pouring over the previously mentioned thread. Sounds as tho there are various versions of the F1ZE with some providing 14lb while others are 15lb injetors? Maybe I missed something? Can anyone help me out here guys.

Project is as follows: Just bought a 1990 w/3.1 litre and 191,000 on it. It had been sitting for at least 6 months prior to buying. Runs pretty doggy but the basic tune - cap, rotor, wires, plugs, filters, were a good start and helped. Running sea foam thru the power brake vacuum line provided the usual amusing white smoke and also ran some thru the crankcase then changed the oil. Now running 25% Marvel Mystery oil in the crankcase and in the fuel tank ~7 oz to the tank full with about 100 miles so far with this mixture.

Seems to be very gradually running ever slightly better so thats what makes me think the injectors (probably never changed) will make the difference if I can find the right ones.

 

southbayfuelinjectors.com has Bosch 2's reconditioned for about $130 for a set shipped. It will for sure be more that getting them at the junk yard, but they come with new o rings, spacers and a warranty, so you won't have to mess with figuring out if you get a bad one.