Contour Enthusiasts Group Archives Forums Modifications 3.0L Duratec Another 3L joins the club

His 19's use the old style plug and his new harness and 24's use the new style plugs.

My advice would be to locate some new style 19# injectors so you don't have to hack the harness, otherwise just hack it and swap in your stock inj. and plugs. Be sure to solder them and later you can just unsolder them and solder back in the new style plugs if you get different injectors or a chip.

You ABSOLUTELY DO NOT need more than 19# injectors on any N/A 3L engine that I've seen so far, and you definitely do not need anything more than the Stock MAF.
You can use an eManage or SAFC on top of stock injectors and MAF to fine tune the fuel on the dyno, but I had plenty of injector left with mine when I dyno'd 217 wHP with 19# injectors.
I would say that the eManage or SAFC would be the bang for the buck instead of a chip so you can fine tune it on a dyno and have a well tuned car.