Injectors and fuel pump inbound.

[MPFab]

Finishing up the Evo put the Sonic on hold, but I'm back on it now. I've got some 52lb injectors on the way, and fuel pump housing being sent so I can open it up and see what will fit in there.
I've also got an 044 Bosch pump that may end up inline with the stocker. Hoping to get on the dyno this week, but that's dependent on a few variables.

 

[Sneakerfix]

Which brand injectors did you go with

 

[MPFab]

EV14 Bosch

 

[ScarabEpic22]

Excited for moar updates!

 

[MPFab]

Here are some pics of the new injectors vs the green giants I took out of the car.

The new injectors have a dual cone spray pattern and a 6 orifice nozzle vs. The single wide cone and 4 orifice nozzle.
The Bosch part # is 0 280 158 279.
They require an EV6 to EV1 adapters to connect to the harness without having to splice in new connectors. Because of this, I had to move the harness over to the fuel rail to clear the added height of the adapters.
Here you can see the harness will no longer snap into place.

In this photo you can see how it's been relocated and the injector leads moved from the bottom of the harness to the top.

Finished!

 

[Sneakerfix]

Here are some pics of the new injectors vs the green giants I took out of the car.

The new injectors have a dual cone spray pattern and a 6 orifice nozzle vs. The single wide cone and 4 orifice nozzle.
The Bosch part # is 0 280 158 279.
They require an EV6 to EV1 adapters to connect to the harness without having to splice in new connectors. Because of this, I had to move the harness over to the fuel rail to clear the added height of the adapters.
Here you can see the harness will no longer snap into place.

In this photo you can see how it's been relocated and the injector leads moved from the bottom of the harness to the top.

Finished!

Looking good

 

[Blue Moon Sonic]

I wanna know how it runs. The suspense is killing me with a rusty spoon from denny's.

 

[CheapFuneral]

Dyno??


If I die, bury me in my truck, because it's never been in a hole it can't get out of!

 

[Brags]

Cant wait for results

 

[MPFab]

I've been trying to fine the time to make a new post about the used Sonic fuel pump/housing I bought, but I can give y'all the cliff notes here. Without extensive modification, you will not be swapping pumps. I purchased a BAP to use with the stock pump, and we'll see how she does. Thanks to Sneakerfix for the info.
I'll try to get it up by tonight.

 

[ScarabEpic22]

I've been trying to fine the time to make a new post about the used Sonic fuel pump/housing I bought, but I can give y'all the cliff notes here. Without extensive modification, you will not be swapping pumps. I purchased a BAP to use with the stock pump, and we'll see how she does. Thanks to Sneakerfix for the info.
I'll try to get it up by tonight.

Not a simple replace the pump in the bucket ordeal I take it?

Ugh thats not good to hear. A BAP is a good solution, but as we continue to push the limits of these cars I'm sure an upgraded pump will need to happen. Looking forward to your post for more info.

 

[Sneakerfix]

Not a simple replace the pump in the bucket ordeal I take it?

Ugh thats not good to hear. A BAP is a good solution, but as we continue to push the limits of these cars I'm sure an upgraded pump will need to happen. Looking forward to your post for more info.

I don't really see an updated pump happening with the way the new GMs are set up. The BAP is the easiest way to get the vol needed to support 350hp or so without converting to a return set up on the cruze/sonic.

 

[sonichead94]

any street pulls of how the car currently runs.

 

[Blue Moon Sonic]

Give it some time. It'll happen eventually. Just keep it in your pants until then.

 

[zbencur]

Walker, will the 52's have enough flow for race gas or e85?

 

[Sneakerfix]

Walker, will the 52's have enough flow for race gas or e85?

Yes...

 

[MPFab]

They will with a BAP to get fuel pressure up where it should be and constant. Without it, I'm seeing as high as 95% duty cycle on the 52lb/hr injectors with fuel pressure fluctuating from 52-60psi.

 

[mja]

I don't really see an updated pump happening with the way the new GMs are set up. The BAP is the easiest way to get the vol needed to support 350hp or so without converting to a return set up on the cruze/sonic.

x2
could contact the manufacturer of the stock pump to find safety margins of max duty cycle.
and I would guess most of us need to pass emissions at least temporarily so return style retrofit would be detrimental.
Still liking this project