If you do swap out the tiny-hole MAF for the later, larger one, make sure to get a later ECU also. My '92 wagon runs much better on the '94 ECU with bigger the '95 MAF housing I put on it. I reused the MAF sensor part from the old housing on the new one, so that I wouldn't have to splice wires. Works great. Just gotta get a new trans now. But that's a different issue....madmatt2024 said:The basic idea is to use the injector/MAF combination that goes with the computer you are using. If your doing the Zetec swap in a 2nd gen LX and using the 1.9 computer to run it then you should use the injectors and MAF that it is programed for. Of course, if your MAF is the one with the small hole then you might want to swap up to a 94-95 MAF that is better flowing.