what do you do when you do fuel delivery

ddarkslayer · June 18th, 2009, 10:26 PM

if i do fuel rails 42 pound injectors fuel rails and regulators what are the best ways to keep up with the air delivery.

Matt Cramer · June 19th, 2009, 09:55 AM

Well, you'll need a good tuning device to control these injectors, and a fuel pump capable of feeding them. A 255 lph pump ought to be enough to feed these injectors with a little capacity to spare.

flyin ryan · June 19th, 2009, 10:57 AM

do you really need 42lb injectors?
how are you tuning the car?
do you really need larger fuel rails?

all this could be answered by what combo your using. Post up what your combo consist of and it'll help everyone help you

1slo5.0 · June 19th, 2009, 10:38 PM

Originally Posted by ddarkslayer

if i do fuel rails 42 pound injectors fuel rails and regulators what are the best ways to keep up with the air delivery.

That doesn't make any sense... What are you trying to do?

R0B0T · June 19th, 2009, 10:55 PM

why do none of your threads make sense???

ddarkslayer · June 22nd, 2009, 11:01 PM

turn it in to a gas guzzler/boost horsepower

1slo5.0 · June 22nd, 2009, 11:10 PM

Originally Posted by ddarkslayer

turn it in to a gas guzzler/boost horsepower

Bigger fuel injectors don't add any horsepower.

I don't know what you mean by "what are the best ways to keep up with the air delivery".

Iwannagofast · June 22nd, 2009, 11:11 PM

Originally Posted by ddarkslayer

turn it in to a gas guzzler/boost horsepower

you didnt answer any important questions.....

and i wanna know what car you own that is going 12.48 at 118

flyin ryan · June 23rd, 2009, 04:54 PM

this thread fails

ddarkslayer · July 12th, 2009, 10:26 PM

if fuel injectors don't add horsepower whats the point of having them

flattusmaximus78 · July 12th, 2009, 10:30 PM

Ohhh boy....

What is your set up.

Do you have aftermarket heads, cam, intakes, maf, tb?

Are you blow, turboed, or spraying the car?

Throwing injectors in wont add hp. If you max smaller injectors out, a new bigger set of injectors when TUNED can free up hp.

You need to asnwer questions.

ReverendDexter · July 12th, 2009, 10:35 PM

I think you've got the equation backwards. Fuel is going to be added based on how much air is coming into the motor.

If you've got the fuel capacity, and you're trying to get more air in, you can minimize your air restrictions (more open air filter, bigger piping, bigger throttle body, etc), or you can shove it in there with boost.

JBIGBOOTSY · July 13th, 2009, 05:56 AM

Originally Posted by ddarkslayer

if i do fuel rails 42 pound injectors fuel rails and regulators what are the best ways to keep up with the air delivery.

10-12psi of boost

superbean · July 13th, 2009, 03:06 PM

Originally Posted by ddarkslayer

if fuel injectors don't add horsepower whats the point of having them

So you don't max out your injector duty cycle..

I.e. Blow ya shit up

95StangMX · July 13th, 2009, 03:33 PM

Originally Posted by ddarkslayer

turn it in to a gas guzzler/boost horsepower

BWAAAHHAAAA this has to be one of the stupidest goals I have ever heard. Do you have any mods done to the car? Injectors are not to give you HP. They are a supporting mod to help your HP mods get what they need.

nolife · July 13th, 2009, 03:50 PM

I think I understand the confusion. Consider a fire burning in a pit, as you add more combustible material, the fire draws in more air and the flame gets bigger. A car engine does not work that way. A gasoline car engine is like an air pump. It can only pass a specific amount of air. You have to add a very specific amount of fuel to that volume of air to maintain a target air/fuel ratio. You can add as much fuel as you want but the air volume is not going to go up so the extra fuel will not burn. The only way to get your engine to pump more air is with more cubic inches, force it in with boost, less restrictive exhaust/intake, more rpm etc.. You will only need larger injectors when the current ones can not supply enough fuel to maintain the right A/F ratio for the amount of air being brought into the engine.

The Novice · July 13th, 2009, 04:44 PM

Originally Posted by flattusmaximus78

Ohhh boy....

What is your set up.

Do you have aftermarket heads, cam, intakes, maf, tb?

Are you blow, turboed, or spraying the car?

Throwing injectors in wont add hp. If you max smaller injectors out, a new bigger set of injectors when TUNED can free up hp.

You need to asnwer questions.

Please Post what Maximus said. This will really help us out so we can help you try to figure out what you want to do and how you should do it.

If you can answer this question and end the confusion we will to help you out 100 X more than we can right now.

June 18th, 2009, 10:26 PM	#1
ddarkslayer Hardcore Enthusiast 1988 Mustang 5.0 LX 12.48@118.27 Join Date: May 2009 Location: Folsom, CA Posts: 1,445 iTrader: 0 reviews	what do you do when you do fuel delivery if i do fuel rails 42 pound injectors fuel rails and regulators what are the best ways to keep up with the air delivery.

June 19th, 2009, 09:55 AM	#2
Matt Cramer Authorized Vendor Join Date: Sep 2008 Location: Covington, GA Posts: 354 iTrader: 0 reviews	Well, you'll need a good tuning device to control these injectors, and a fuel pump capable of feeding them. A 255 lph pump ought to be enough to feed these injectors with a little capacity to spare. __________________ Matt at DIYAutoTune.com - Megasquirt ECUs, fuel pumps, injectors, widebands, and more Now offering Mustang specific Megasquirt packages!

July 12th, 2009, 10:30 PM	#11
flattusmaximus78 I Post Entirely Way Too Much 1993 5.ohhhh 12.97 @140mph Join Date: Apr 2006 Location: Gatorland Posts: 6,122 iTrader: 3 reviews	Ohhh boy.... What is your set up. Do you have aftermarket heads, cam, intakes, maf, tb? Are you blow, turboed, or spraying the car? Throwing injectors in wont add hp. If you max smaller injectors out, a new bigger set of injectors when TUNED can free up hp. You need to asnwer questions. __________________ 02 Pewter z28, hoosiers/lid/exhaust/spray...125mph 1993 gt Sold, already missed --Moates Quarter horse $225-- --Cobra intake $150-- --tremec 3550 bell and shifter $1100--

July 12th, 2009, 10:35 PM	#12
ReverendDexter Priest of the Car Gods Clapped-out '90 GT 'vert ~5.5 seconds off TTOD :( Join Date: Jan 2007 Location: Rohnert Park, CA Posts: 13,808 iTrader: 0 reviews	I think you've got the equation backwards. Fuel is going to be added based on how much air is coming into the motor. If you've got the fuel capacity, and you're trying to get more air in, you can minimize your air restrictions (more open air filter, bigger piping, bigger throttle body, etc), or you can shove it in there with boost. __________________ O o /¯/______________________ \|BLAAAAAAAAAAAAAAAAAAAAAAAAARGH!!! \_\

July 13th, 2009, 03:50 PM	#16
nolife MM Fanatic 91GT, 88GT, 02GT Join Date: Dec 2006 Posts: 3,057 Blog Entries: 3 iTrader: 0 reviews	I think I understand the confusion. Consider a fire burning in a pit, as you add more combustible material, the fire draws in more air and the flame gets bigger. A car engine does not work that way. A gasoline car engine is like an air pump. It can only pass a specific amount of air. You have to add a very specific amount of fuel to that volume of air to maintain a target air/fuel ratio. You can add as much fuel as you want but the air volume is not going to go up so the extra fuel will not burn. The only way to get your engine to pump more air is with more cubic inches, force it in with boost, less restrictive exhaust/intake, more rpm etc.. You will only need larger injectors when the current ones can not supply enough fuel to maintain the right A/F ratio for the amount of air being brought into the engine. __________________

June 19th, 2009, 10:57 AM	#3
flyin ryan Banned Join Date: Jun 2008 Posts: 3,387 iTrader: 0 reviews	do you really need 42lb injectors? how are you tuning the car? do you really need larger fuel rails? all this could be answered by what combo your using. Post up what your combo consist of and it'll help everyone help you

June 19th, 2009, 10:55 PM	#5
R0B0T Banned 12.8@103... stock motor 11.8@113...150 shot Join Date: Apr 2008 Posts: 464 iTrader: 0 reviews	why do none of your threads make sense???

June 22nd, 2009, 11:01 PM	#6
ddarkslayer Hardcore Enthusiast 1988 Mustang 5.0 LX 12.48@118.27 Join Date: May 2009 Location: Folsom, CA Posts: 1,445 iTrader: 0 reviews	turn it in to a gas guzzler/boost horsepower

June 23rd, 2009, 04:54 PM	#9
flyin ryan Banned Join Date: Jun 2008 Posts: 3,387 iTrader: 0 reviews	this thread fails

July 12th, 2009, 10:26 PM	#10
ddarkslayer Hardcore Enthusiast 1988 Mustang 5.0 LX 12.48@118.27 Join Date: May 2009 Location: Folsom, CA Posts: 1,445 iTrader: 0 reviews	if fuel injectors don't add horsepower whats the point of having them

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