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500hp for 500$

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yeti-gvr4

10+ Year Contributor
422
2
Dec 23, 2010
san diego, California
Is this pssible with a big 16g

What size injectors,
fuel pump
And would an ecm link be good for the job? Or could I get something smaller

Just wandering if that goal is possible off a 16g with 500$
 
Because you're forgetting the rising rate fuel pressure and that as pressure goes up, flow goes down.
 
Because you're forgetting the rising rate fuel pressure and that as pressure goes up, flow goes down.

I'm not following...

EDIT:

Never mind I see what you're trying to say. You mean that if you raise the fuel pressure, it will raise the flow rate of the injector. So for example if he wanted to get 950 cc/min of flow out of an 850 cc/min injector (rated @ 44 psi) you would raise the fuel pressure to...

P_new = (P_old)*(Flow_new/Flow_old)^2

P_new = [(950/850)^2 * 44] = 55 psi

Although accordingly this can be rearranged to...

Flow_new = (Flow_old)*sqrt(P_new/P_old)

Notice that the rate of fuel injected is the square root of the pressure ratio. So you need to multiply your pressure by four in order to double your flow rate. You would definitely need a serious fuel pump setup to do that.

So I'm thinking that the injectors were maxed out, but by using the fuel pressure trick and dual fuel pumps he was able to make them work. I still think it would've been easier and made more sense to just install larger injectors.
 
I'm not following...
If the fuel pump was at 43.5 PSI the whole time then yes, the pump would outflow the injectors. Since you only really stress the fuel system in boost, and since we have rising rate fuel pressure, depending on the boost he was running he could have been at 60-80 PSI fuel pressure, which would significantly reduce the flow capabilities of the pump while making the injectors flow more than they would at base pressure. When the fuel pressure goes up the pump flows less and the injectors flow more.
 
If the fuel pump was at 43.5 PSI the whole time then yes, the pump would outflow the injectors. Since you only really stress the fuel system in boost, and since we have rising rate fuel pressure, depending on the boost he was running he could have been at 60-80 PSI fuel pressure, which would significantly reduce the flow capabilities of the pump while making the injectors flow more than they would at base pressure. When the fuel pressure goes up the pump flows less and the injectors flow more.

Yeah see my edit, I figured it out. Thanks though.
 
So you were at the limit of a single walbro. On pump gas i would assume since 850's are to small to run e85. I'm sorry but am going to have to call BS. My single walbro is enough for 5 on e85.

Nope, I was running 90 octane pump gas with a multi port water meth kit.

Absit is completely right, I was running higher than stock fuel pressure, to make the injectors act bigger than they were, one fuel pump could not keep up after 28 psi of boost. I put a second one in and problem solved, the set up worked awesome.:rocks:
 
you'll need more money than that for this goal, and some good hands with a wrench, otherwise you are stretching for the stars.

Gt35r turbo
255lph fuel pump rewired
injectors-minimum 650s-680s
full exhaust 3"
mbc
tuning device
stage 2 clutch kit and flywheel
upgraded internals
suspension(a must need to secure that power down)
fmic

will be done

i have exhaust,,,injectors,,intrnals,,,fmic,,,,suspension,,,clutch and mbc

i need fuel pump tuning device and turbo


this is not do able for 1500

i will make pricelist with receipts
 
No, you will need NOS, 2 of the big bottles.
He'd be lucky if a hundred shot of NOS won't blow the welds on the intake. :D


On a serious note, $500 won't buy the fuel system upgrades needed to make 500whp. Get a clue.
You must be logged in to view this image or video.
 
On a serious note, $500 won't buy the fuel system upgrades needed to make 500whp. Get a clue.

Exactly.

This thread is pointless. $500 is the cost of one of MANY components needed to make 500whp.
 
Not included my car or the turbo iv almost spent 5000 in parts and laborer, and i still need a dsmlink. I sure i have the supporting mods and fuel for 500hp. But its all gonna depend on the tune, and who knows how much that is gonna cost. 120bucks times x amount of dollars........
 
only time will tell if my bargain shopping will help,
thanks to every one with advice

:nono:
all you haters

THANKS FOR THE THREAD SPACE AND TIME
 
As i said there will be receipts for everything


AND IN THE END I SAID 1500 FOR TURBO, TUNE,AND FUEL PUMP,AND AY OTHER MISC IT

AND SHOULD BE CLOSE TO 500AWHP AT LEAST 4
 
only time will tell if my bargain shopping will help,
thanks to every one with advice

:nono:
all you haters

THANKS FOR THE THREAD SPACE AND TIME

With you having a 91 you may be able to run dsmap instead of link. That will save you $600+ right off the start. Holset and injectors may be found for $500 if your patient or know someone. So this may be plausible.
 
As i said there will be receipts for everything


AND IN THE END I SAID 1500 FOR TURBO, TUNE,AND FUEL PUMP,AND AY OTHER MISC IT

AND SHOULD BE CLOSE TO 500AWHP AT LEAST 4

Other miscellaneous? Like cams, Valvesprings, SMIM, FMIC, wastegate, bov, plumbing, AFPR, aftermarket fuel filter, injectors, intake, exhaust, clutch, etc, etc , etc

Lol @ your underestimation of this.

:nono:
all you haters

In this case, haters are people who are more knowledgeable and experienced than you.
 
Other miscellaneous? Like cams, Valvesprings, SMIM, FMIC, wastegate, bov, plumbing, AFPR, aftermarket fuel filter, injectors, intake, exhaust, clutch, etc, etc , etc

Lol @ your underestimation of this.



In this case, haters are people who are more knowledgeable and experienced than you.


WOW

YOU ARE SPECIAL

I HAVE MOST OF WHATS NEEDED(amazes me how ignorant you are)
why don't you read my posts
 
Dude if you think you can do it, then go for it.

But your original post sounded pretty retarded, so what do you expect?
 
Dude if you think you can do it, then go for it.

But your original post sounded pretty retarded, so what do you expect?

of course original post was STUPID BUT AT LEAST HAVE COURTESY TO READ WHAT I POSTED B4 FLAMING ME.

BUT YES I WILL DO THIS AND DOCUMENT

THANK YOU EVERYONE
 
WOW

YOU ARE SPECIAL

I HAVE MOST OF WHATS NEEDED(amazes me how ignorant you are)
why don't you read my posts

In your original post you asked what size injectors, now you have them?

What did you do, listen to that other clown you quoted and buy 680s?

Those will get you to your goals...:banghead:
 
In your original post you asked what size injectors, now you have them?

What did you do, listen to that other clown you quoted and buy 680s?

Those will get you to your goals...:banghead:


NO I HAVE 750'S
LAYING AROUND

AND YES I ASKED WHAT SIZE. IS that implying that i have none!?

eat your beans
 
NO I HAVE 750'S
LAYING AROUND

AND YES I ASKED WHAT SIZE. IS that implying that i have none!?

eat your beans

750s aren't big enough unless you have supplemental fuel from a meth system.

Do your homework.
 
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