Walbro 190 limits?

[94exa2]

I'm sorry dude, Im just having a hard time with the numbers.

If I dont HAVE to install a 255 AND adj fpr for a t28, Id rather not.

If a stock Evo fuel pump and stock Evo 560 injectors can supply enough fuel (planning on dsmlink) for a bigt28 thats the route I'd rather take, unless I NEED a larger pump and/or injectors. Im just having a hard time figuring out if the Evo fp and Inj's are enough.


(sorry I read that the stock evo fuel pump supplies more fuel than a wally 190, I keep reading contradicting info which makes figuring out all the numbers even harder)

 

[Calan]

Keep in mind that the type of fuel you run will have an effect also. Even unmarked pump gas (which is up to 10% ethanol) vs. pure gasoline will have an impact on fuel requirements, although it's fairly negligible unless you are on the ragged edge.

If you ever plan on running E85 or other ethanol blends, you have to take that into consideration when choosing a pump and injectors.

*****

My .02:

Since you already have the 190, stick with it until you need a bigger pump due to an upgrade in airflow. Just make sure it is rewired properly for constant voltage.

BUT... since you are planning on ECMLink (good call IMO), go ahead and invest a little more in larger injectors now so you won't ever have to upgrade them again. Something in the 1150-1300cc range should be plenty until you get up into the 500whp range; but at that point you will have plenty of other things to consider. You can find larger injectors on the used market for not much more than the smaller ones these days.

Or, if you have the money... buy a 255HP, AFPR, 1200-1400cc injectors, and ECMLink... and never worry about fuel again unless you start flirting with the 500WHP mark.

 

[94exa2]

1200cc injectors? Damn, that seems like alot.

I guess Ill just go for the biggest pump and injectors even though Im not planning on over 300hp with a small t28 turbo.

Was hoping to figure out if the rewired 190 and evo injectors are enough, but so much for the thought of help.

20398402398420394 lhp fp and 20394820938402394cc injectors it is.....

 

[96awd16g]

Seems like a bad attitude if you want help.

Rewire your 190 fuel pump and it's plenty for your current goals. You want at least 650cc injectors, bigger if the pocket book can handle it.

 

[agentorange313]

1200cc injectors? Damn, that seems like alot.

I guess Ill just go for the biggest pump and injectors even though Im not planning on over 300hp with a small t28 turbo.

Was hoping to figure out if the rewired 190 and evo injectors are enough, but so much for the thought of help.

20398402398420394 lhp fp and 20394820938402394cc injectors it is.....

It seems you want others to figure out if the injectors are large enough, I am not putting you down, just we (collectively) have given you the resources to figure out if both the injectors and fuel pump are large enough.

If the t-28 flows 35lbs at max boost 22psi, and the 190 flows at 22-23psi = 49.71lbs/min. Then it is enough

If the t-28 flows 35lbs at max boost 22psi, and 550cc
550cc @ 100% IDC will support 39.48lbs/min
550cc @ 80% IDC will support 31.58lbs/min
Its pushing the limits of the injectors.

Does that help? I don't know how much more basic I can make it. The data is right there.

 

[Calan]

I think this thread has run it's course, so I'm closing it to avoid any unnecessary arguments. There is plenty of good advice here, along with the resources needed to answer all of the questions asked.