The new 2025 Dual injection strategy

[MasterCylinder]

I cringe every time someone tells me I need to sit there and wait, wasting gas until the idle comes down. Heck, the other day it was cold out, I was fiddling around for a good 10 minutes before I was ready to hop in and go, and it was still at high idle. It's a 5G but the principle is the same. Too long.

I didn't "tell" you or anyone else to sit there, like I always say, "it's your money" mechanics have to pay the bills too.
You might want to address that prolonged fast idle problem. Mine even at 30 Degrees Fahrenheit usually last less than 3 minutes, even in my 91 and 09 Fords. Many of today's vehicles, after a few minutes, once you step on the brakes and move the shifter it tells the ECM, I'm movig out and will drop sequentially while that shifter moves.

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[got3fords]

I didn't "tell" you or anyone else to sit there, like I always say, "it's your money" mechanics have to pay the bills too.
You might want to address that prolonged fast idle problem. Mine even at 30 Degrees Fahrenheit usually last less than 3 minutes, even in my 91 and 09 Fords. Many of today's vehicles, after a few minutes, once you step on the brakes and move the shifter it tells the ECM, I'm movig out and will drop sequentially while that shifter moves.

Interesting, mine has a longer high idle time when cold, but it stops immediately when I move the shifter. So I am not worried about it.

 

[MasterCylinder]

Interesting, mine has a longer high idle time when cold, but it stops immediately when I move the shifter. So I am not worried about it.

It seems to vary greatly not just among manufactures but temperatures/humidity also, because of ECM programing and the sensors used, which today's vehicles are full of especially turbo-ed ones, dual injection etc.... Vehicles since fuel injection days began do not need to idle very long, better to just drive easy until temps come up if feasible. I've see 15 minutes before on a customers car (fuel injected) back when but it was related to a slow responding sensor.

 

[STX6G]

Fords new dual injection strategy is quite ingenious and goes like this, the Port injection is fully operable, at all times. The RPM at which it starts to be added to by the Direct injection is dependent on engine size and load. The basics are if your piddly putting around and staying out of a load on the engine (think turbos spooling in) the Port injection will be handling things. You push the engine and the Direct injection comes on and starts adding in fuel. Ford says this phase is normally in the 2000-3000 rpm range. At full hammer down the Port injection is still active but only supplying around 5-10% of the fuel based on engine size and load. Ford was addressing several issues with this operating strategy, carbon build up and the dreaded low speed pre-ignition which is more prevalent in turbo charged engines, probably more so with the newly designed turbo. My thought is this new twin scroll turbo (which the 2.7 and 3.0 do not have to my understanding) puts out quite a bit more and comes on faster than the old style, especially for it's size and it helps prevent the ecoboom scenario from turbo charged engines. We also get modified cylinder dimensions, modified cylinder head, improved valve specifications which all translates into better airflow and power. I think future tunes for the little guy are going to be tremendous and look into adding 40-50+ horsepower safely, maybe more but we will see. Enjoy the ride folks!!

Please keep us informed on the tunes that you hear of for this engine . Thanks

 

[jmt8706]

I found the answer. See photo. They did the exhaust pulse timing by different size exhaust feed ports. Took forever for someone at Ford to post real pictures of the turbo to see!

Just a heads up, that's a turbo for the 2.3L., no twin scroll for the 2.7 or 3.0

 

[MasterCylinder]

Just a heads up, that's a turbo for the 2.3L., no twin scroll for the 2.7 or 3.0

Yes, if you follow the conversation that's what was being referred to, the 2.3L.

 

[jmt8706]

Yes, if you follow the conversation that's what was being referred to, the 2.3L.

That's my mistake, I was meaning to reply to crustynoodle in post #21.

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