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efalex · 08-18-2009, 10:49 AM

why does everyone say it all depends on the tune? if u run 7psi on a stock single cam why do u need bigger injectors? dont jump all up on me, this is just the one thing im kind of stuck on. i can see why fo bigger stups n shit bu not for say 7psi?

D16SiHatch · 08-19-2009, 02:03 AM

because stock injectors will not support even 7 psi and therefore you will need larger injectors. once you install the larger injectors, a tune then becomes a must.

DESPAIN · 08-19-2009, 10:00 AM

and when you put in larger injectors then you need a 255lph feul pump too. ok..... YOU ARE FORCING MORE AIR IN YOU ENGINE SO YOU NEED MORE FEUL OR YOU WILL LEAN OUT AND BURN UP RINGS AND MAYBE MORE. JUST BECAUSE YOU HAVE LARGER INJECTORS JUST MEANS THEY CAN DELIVER MORE FEUL SO YOU HAVE TO GET MORE FEUL TO THE INJECTORS SO THE INJECTORS CAN GET MORE FEUL TO YOUR ENGINE. THATS WHERE A GOOD TUNE COMES IN..... +AIR=+FEUL=+POWER. THE STYOCK ECU IS PROGRAMED TO RUN EVERYTHING STOCK. BUT YOUR NOT RUNNING STOCK ANYMORE......SO YOU NEED A GOOD TUNE. HOPE THIS MAKES SENSE....

B · 08-19-2009, 03:21 PM

psi is meaningless

stock fuel pump supports 220 whp. no need to upgrade under that power level.

stock injectors are 240cc.
200hp eclipse's come with 450's. that should tell you something right away. the stock honda injectors are nearly peaked out form the factory. plus when you boost, you run richer than in an all motor set up, thus requiring more fuel per power to keep it on the rich burn side.

efalex · 08-19-2009, 10:05 PM

okay. thanks b, so no less thn 450s.

efhondakid · 08-19-2009, 10:32 PM

DSM bluetop 450s can be had for $80-100, and will support about 250whp-ish which is all a stock D is comfortable with.

hondacivicdx92 · 08-19-2009, 10:52 PM

Quote:

Originally Posted by B

psi is meaningless

stock fuel pump supports 220 whp. no need to upgrade under that power level.

stock injectors are 240cc.
200hp eclipse's come with 450's. that should tell you something right away. the stock honda injectors are nearly peaked out form the factory. plus when you boost, you run richer than in an all motor set up, thus requiring more fuel per power to keep it on the rich burn side.

Ok I am in good with the guy who owns the local import shop and he was a service tech for many year with honda and has built many hondas. I talked with him when turboing my old honda. He said larger injectors at 7 lbs with is not needed.

As far as the eclipses go they have more displacement than a d series honda.

efhondakid · 08-19-2009, 11:05 PM

7psi on what? A T25 or a 60-1? Boost = bigger injectors, no two ways about it.

B · 08-20-2009, 12:35 AM

Quote:

Originally Posted by hondacivicdx92

He said larger injectors at 7 lbs with is not needed.

he's an idiot, or he runs FMU's and he's an idiot for doing that.

if you chose to believe him over us who have boosted cars and run one of the largest honda sites on the internet, it's your motor to blow.

hondacivicdx92 · 08-20-2009, 01:48 AM

no need to call names here. just stating what i have been told, never said whether it was true or not.

and yes i did use a FMU because i didnt have the money for anything else at the time. not the best choice but it did work and i never ran lean on stock injector and stock pump.

97hatch · 08-20-2009, 07:25 AM

FMU= Fucked Motor Usualy

B · 08-22-2009, 03:51 AM

FMU = fucks motors up

Bobby17772 · 08-22-2009, 12:54 PM

when you upgrade to bigger injectors, should you get your car tuned or can you just leave it how it is?

efhondakid · 08-23-2009, 10:00 PM

Quote:

Originally Posted by Bobby17772

when you upgrade to bigger injectors, should you get your car tuned or can you just leave it how it is?

When you boost a car a tune of some sort and injectors are absolutley needed, it is really that hard of a concept to grasp?

Bobby17772 · 08-23-2009, 10:23 PM

I didn't mean when you boost. I meant just in general if you upgrade to bigger injectors if you have to get it tuned for those injectors

efhondakid · 08-23-2009, 10:25 PM

B · 08-23-2009, 11:40 PM

absolutely... or you'll flood at lower rpms

08-18-2009, 10:49 AM	#1
efalex Senior Member Join Date: Sep 2008 Location: Danville NH Posts: 261 iTrader: 0 / 0% Ride: 1991 civic dx Rep Power: 9	question on injectors why does everyone say it all depends on the tune? if u run 7psi on a stock single cam why do u need bigger injectors? dont jump all up on me, this is just the one thing im kind of stuck on. i can see why fo bigger stups n shit bu not for say 7psi?

08-19-2009, 10:00 AM	#3
DESPAIN yep....mmhhm.......yep... Join Date: Aug 2008 Location: flower mound TX Age: 27 Posts: 1,208 iTrader: 0 / 0% Ride: 92 PRELUDE SI Rep Power: 101	and when you put in larger injectors then you need a 255lph feul pump too. ok..... YOU ARE FORCING MORE AIR IN YOU ENGINE SO YOU NEED MORE FEUL OR YOU WILL LEAN OUT AND BURN UP RINGS AND MAYBE MORE. JUST BECAUSE YOU HAVE LARGER INJECTORS JUST MEANS THEY CAN DELIVER MORE FEUL SO YOU HAVE TO GET MORE FEUL TO THE INJECTORS SO THE INJECTORS CAN GET MORE FEUL TO YOUR ENGINE. THATS WHERE A GOOD TUNE COMES IN..... +AIR=+FEUL=+POWER. THE STYOCK ECU IS PROGRAMED TO RUN EVERYTHING STOCK. BUT YOUR NOT RUNNING STOCK ANYMORE......SO YOU NEED A GOOD TUNE. HOPE THIS MAKES SENSE.... __________________ Hugh.......I like money....... "idiocracey" I called it. That guy is an asshole. I bet he just sits in that hole does coke and banges pros all day.

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08-19-2009, 02:03 AM	#2
D16SiHatch Senior Member Join Date: Sep 2007 Posts: 880 iTrader: 0 / 0% Rep Power: 35	because stock injectors will not support even 7 psi and therefore you will need larger injectors. once you install the larger injectors, a tune then becomes a must.

08-19-2009, 03:21 PM	#4
B Administrator Join Date: Nov 2007 Location: down in the villiage area Age: 29 Posts: 8,651 iTrader: 0 / 0% Ride: 2010 Hyundai Genesis Coupe 2.0t Track Edition, 2000 Dakota Rep Power: 481	psi is meaningless stock fuel pump supports 220 whp. no need to upgrade under that power level. stock injectors are 240cc. 200hp eclipse's come with 450's. that should tell you something right away. the stock honda injectors are nearly peaked out form the factory. plus when you boost, you run richer than in an all motor set up, thus requiring more fuel per power to keep it on the rich burn side.

08-19-2009, 10:05 PM	#5
efalex Senior Member Join Date: Sep 2008 Location: Danville NH Posts: 261 iTrader: 0 / 0% Ride: 1991 civic dx Rep Power: 9	okay. thanks b, so no less thn 450s.

08-19-2009, 10:32 PM	#6
efhondakid My name is Byron. Join Date: Mar 2007 Location: Akron-Canton, Ohio Age: 20 Posts: 5,631 iTrader: 2 / 100% Ride: 89' DX Hatch w/B16 Rep Power: 241	DSM bluetop 450s can be had for $80-100, and will support about 250whp-ish which is all a stock D is comfortable with.

08-19-2009, 11:05 PM	#8
efhondakid My name is Byron. Join Date: Mar 2007 Location: Akron-Canton, Ohio Age: 20 Posts: 5,631 iTrader: 2 / 100% Ride: 89' DX Hatch w/B16 Rep Power: 241	7psi on what? A T25 or a 60-1? Boost = bigger injectors, no two ways about it.

08-20-2009, 01:48 AM	#10
hondacivicdx92 Hamby Join Date: Apr 2008 Location: Indiana Posts: 193 iTrader: 1 / 100% Ride: new: 90 Toyota Pickup on 33's old:Turbo 92 Civic DX hatchback Rep Power: 8	no need to call names here. just stating what i have been told, never said whether it was true or not. and yes i did use a FMU because i didnt have the money for anything else at the time. not the best choice but it did work and i never ran lean on stock injector and stock pump.

08-20-2009, 07:25 AM	#11
97hatch ? Join Date: Feb 2003 Location: Anderson IN Age: 26 Posts: 1,638 iTrader: 0 / 0% Ride: i have 14 cars i drive my sohc turbo ef Rep Power: 36	FMU= Fucked Motor Usualy

08-22-2009, 03:51 AM	#12
B Administrator Join Date: Nov 2007 Location: down in the villiage area Age: 29 Posts: 8,651 iTrader: 0 / 0% Ride: 2010 Hyundai Genesis Coupe 2.0t Track Edition, 2000 Dakota Rep Power: 481	FMU = fucks motors up

08-22-2009, 12:54 PM	#13
Bobby17772 Senior Member Join Date: Jun 2009 Location: Enfield, CT Age: 19 Posts: 573 iTrader: 0 / 0% Ride: 1991 civic hatch dx Rep Power: 7	when you upgrade to bigger injectors, should you get your car tuned or can you just leave it how it is?

08-23-2009, 10:23 PM	#15
Bobby17772 Senior Member Join Date: Jun 2009 Location: Enfield, CT Age: 19 Posts: 573 iTrader: 0 / 0% Ride: 1991 civic hatch dx Rep Power: 7	I didn't mean when you boost. I meant just in general if you upgrade to bigger injectors if you have to get it tuned for those injectors

08-23-2009, 10:25 PM	#16
efhondakid My name is Byron. Join Date: Mar 2007 Location: Akron-Canton, Ohio Age: 20 Posts: 5,631 iTrader: 2 / 100% Ride: 89' DX Hatch w/B16 Rep Power: 241

08-23-2009, 11:40 PM	#17
B Administrator Join Date: Nov 2007 Location: down in the villiage area Age: 29 Posts: 8,651 iTrader: 0 / 0% Ride: 2010 Hyundai Genesis Coupe 2.0t Track Edition, 2000 Dakota Rep Power: 481	absolutely... or you'll flood at lower rpms

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