After Market Fuel Injection

[GuppyWN]

How long will the system operate on battery power -

When you load shed nothing?
When you load shed EVERYTHING but the fuel injection/pump?

[jmodguy]

How long will the system operate on battery power -

When you load shed nothing?
When you load shed EVERYTHING but the fuel injection/pump?

That would be determined by the battery "size", what other systems/devices you have installed and and would be best addressed by the manufacturer/distributor. The pump is definitely the power hog though...
On your last statement you will also need power for the ECU, otherwise you would be squirting fuel into an engine with no spark!

[Esser]

Ross from SDS said you will have about 30 to 45 min of time in an electrical failure depending on your loads. I feel that is more than enough time in most situations to set yourself up for a non life threatening event. We are setting up our plane with an essential bus and then a secondary bus with a two battery approach as described in AeroElectric connection.

We adding a single injector in the middle of the intake manifold that will be a 70% power back up in the highy unlikely event of an ECU failure that will be controlled by a CB.

[AirFox]

EFI Update

It's been a while since I posted my search for an EFI system. I decided on the Edgeperformance.no 4-1 directport fuel injection system.

20170702_185736.jpg

Lots of work went into determining what system would fit under my SS7 cowl. I ordered the "Trixy" intake with the injectors facing forward and aft to clear the cowl. The Trixy intake is swept aft for clearance for the Airmaster slip rings on the aft of the gearbox. The top of the intake clears the cowl by a little more than a 1/2 inch.

Over the past week or so I have been installing the system. The system consists of the intake manifold, Pressure Regulator, vac manifod, ECU, O2 sensor, wire harness, ECI relocation brackets, and Dual fuel pump with hoses and connectors. I've spent about 25 hours on the installation. I'm pretty happy with all the components so far. The system is installed and ready for operation. I found a leak on one of the AN 6 PTFE fuel fittings. This fuel system is really nice but you have to order/wait for everything. As soon as the fitting arrives I'll be starting the engine.

20170702_185755.jpg

I installed an extra EarthX(2.5lb offset by the weight saved on the EFI sys) battery that will automatically power the ECU and Fuel pumps in the event the Regulator and/or main Battery fails.

Thought there was interest on this upgrade so I'll keep you posted on the first run and results of the upgrade.

Scott

[rosslr]

Hi Scotty,

Nice work - it will be good to hear how you find it when flying. What was your main motivation for doing it? Did you install the Earth X as an additional battery? I have the Earth X as the only battery with a bypass to start and run the engine in the event of computer system failure. (912is sport). Also, I've been away for nearly 4 weeks and the temps have been minus most evenings so I was curious as to the state of the battery on return. It showed 11.7 volts but started up the engine with ease. It has 300 hours on it now and I guess double or triple that no of starts. Happy with it so far and interested to see how many years I get out of it.

cheers for now

r

[AirFox]

Hay Ross,

My primary purpose of the EFI is to modernize the fuel system. The last push was the latest Rotax float recall. I had a sunk float last October and I'm still waiting for a float replacement. Luckily a good friend(Thanks John) came through with a spare float or I would have been grounded all winter/spiring. In the thread above I listed pros/cons for EFI.

I am running the second battery primarily to extend the range of my electrically dependent fuel pump and ECU power. The battery should give me an additional 45 minutes of power with the extra battery.

I will keep posting my progress as I continue this upgrade.

Good to hear from you Ross.

Scott

[DesertFox4]

Looks like a clean install Scott. I imagine you are after more horsepower with this setup. Nice looking components.

[Av8r3400]

Looking forward to a detailed performance report!