Fuel pump sizing. 190lph Walbro with a 20G + turbo?

[Antilles]

I have a walbro 190. I should have gotten a 255 but i didnt. The way the 190 was installed so many things were broken that i doubt i can upgrade it and still make the tank seal. I was sloshing gas all over the place so i put a screw in it to fix it.

Anyhow, will a 190 be good enough for a 20G or Green? I hear all kinds of horsepower numbers that its supposedly good for, from 300 to 450. i just need to know if it'll handle the size turbo i want.

thanks

chris

 

[Awdboost]

Yes.. I just post something like this 6 day ago. Great minds think alike.
You may need to rewire the pump for a bigger turbo thou. What I've been told is that you can run into mid 11's

 

[Antilles]

hmmm. i already did a low 12 trap speed without any injectors or rewire or anything. thanks for the info...if i have to re-do it then i guess thats what i have to do.

 

[rdrkt]

Originally posted by Antilles
hmmm. i already did a low 12 trap speed without any injectors or rewire or anything.

That will depend on your gas type. If you try to do it on pump gas you will get drastically different results.

 

[DCJ98GST]

What would the 190 be good for on pump gas roughly speaking?

 

[rdrkt]

Originally posted by DCJ98GST
What would the 190 be good for on pump gas roughly speaking?

Depends on what type of fuel pressure you are running and what size injectors

 

[ItsStockOfficer]

On a denso 190 I went 118.97 mph so far on 550's...Im going 720's now, I maxed out 550's far before my rewired fuel pump running 43 base psi fuel pressure. a 190 with 660cc or larger injectors will trap over 112 mph on pump gas easily enough.

 

[Antilles]

So you maxed out the 550's at just 118mph? I think i will have to totally rethink my planned fuel setup...Im not looking forward to re-doing the pump though. And i may need to buy a new gas tank.