Contour Enthusiasts Group Archives Forums Modifications 3.0L Duratec Another Injector question

Hi,

I have put about 5000 KM on my 96 Mystique with a 2001 3.0L in it. It's running decent, I have not chipped it, just running a VAFC. It has 24 lb injectors now. My friend just gave me a set of Orange injectors from a 2004 Towncar with about 3K on them. I beleive they are 19 lb injectors. Assuming you were on a budget and don't plan on putting a chip in any time soon, would it be wise to run the Towncar injectors? I have the plugs to get them going, is there any reason why they won't work in my car? I am getting a full 2.5" exhaust on Wednesday, and getting the Y-Pipe optimized. Going to gut the headers aswell. I have the car running pretty good with just a VAFC, I am thinking I can have it dialed in nearly perfect with 19 lb injectors.

I am doing everything on a budget with this car and it's turning out to be an awesome "bang for the buck" car.

Oh and one more question, I picked up a Magnaflow 11226 muffler, the same as the trubendz kit. I showed a picture of the Trubendz exhaust to the place I am getting the exhaust done at and they said they wouldn't put the muffler so close to the front of the car as it will burn out fast. Would it make a major difference in sound to have it near the back? I am also going to go with a single 2.5" exhaust as I don't think a dual will net much more power. Going to paint it black and run no tip. Keep it "sleeper"

You could do that. They will have plenty of fuel for your engine but you'd still need to tune them in because you car came with 17# injectors. They'd work much better than 24s without a chip though.

Any chance someone can confirm that the orange injectors I have from a 2004 Towncar are infact 19 lb injectors? The part number is 0 280 155 917 and the Ford number is XL2E-C5A. I tried searching gooogle and I got a few conflicting results. One saying they are 24 lb injectors, another saying they are 19 lb injectors and one saying they are 13.5 injectors. I beleive they are made by Bosch. Would kinda suck to swap out my blue 24 lb injectors for another set of 24s.

Thanks

Never mind looks like I found my answer.

According to this

http://apps.bosch.com.au/motorsport/downloads/fuelinjectors.pdf

they flow 142.5 g/min at 3 bar so that is about 19 lb/hr at 43.5 psi.

So for future reference Ford started using the same injectors they have been using in the Triton V10 and Ford Falcon on the 2004 Towncars. In 2003 they were using another injector. So an all orange Bosch injectors that looks like this with part number xl2e-c5a and Bosch number 0 280 155 917 are another alternative to SVT injectors if you want 19s. Probably will be much easier and cheaper to get your hands on in the future. This is a Design III (Newest Style) injector so I am assuming it's what is more likely to come with newer Fords.

But first let me get them into my car and try them out, I might be talking out of my ass?

Looks good. Good luck with it.

Thanks warmonger


Ok got them in, they are working fine. I had my AFC pulling an average of about 19% fuel accross the board with the 24 lb injectors. When I started the car with the 19 lb injectors and tried to rev it, the car would not even have enough fuel to build up the rpms smoothly. This was with the AFC still pulling 19%. So I put the AFC back to zero and the car ran normal. When I drove the car, it felt smoother.

I now have wide throttle setting set to pull between 8% down low to around 14% after 4k rpm and around 12% near redline. I was expecting to have to bump the fuel up in the upper rpm band? With the 24s it was set to pull 19% up to when the secondaries open then I had it pulling around 8% then back up to around 19% until around 5500 rpm where it was pulling 24%.

Narrow throttle on the 19s is set to pull around 3-5% accross the board. Narrow throttle with the 24s was -19%.

I guess I am overall surprised how different the fuel curve has to be just because I installed different injectors. It's like they have their own unique characteristics at different rpms. Still have some fiddling to do but I can say the car feels better and it seem less fuel is going to waste, especially at idle. Can anyone explain why different injectors respond different, or am I missing something?

Something to note if you drop 24s into your car with no tuning the car will barely run and the car will be way out of tune. Dropping in 19s with no tune and your car will run pretty decent, not too far out of tune.

They are different.

I've found that there is a whole different table of values in my software to adjust the differences in the injectors. Pulse width, slope, flow rate, etc.

Ok Cool, it's very interesting actually. I decided to set my narrow throttle settings back to zero. With the 24s the ECU had the long term fuel trim set at around -17% before I installed the AFC, afterwards it was around -12-14% so there really is no reason to play with the AFC setting for regular driving, I'm sure the ECU can take care of that on it's own. I am going to once again redo my wide throttle settings with a scanner monitoring the O2 signal. Unfortunetly you can't do the "blue wire mod" on the VAFC. I might even just hook up a multimeter. I will post the results. After a couple weeks of driving I am going to get the car dyno tuned.