trying to decide wether or not to just go ahead and buy the precision 1600cc injectors and get it over with but ive had many friends tell me 1200cc's would do the job. im shooting for 700whp now but in the near future want 800+whp when i swap over to my gt42rs. i know people who have hit 800whp on 1000cc injectors running 60psi fuel pressure though...lol! i just want to know if the 1200cc's will support 800 or should i just step up and get the 1600cc's. also, this will be a street driven civic. 3-4 days out of the week and raced when ever the gates are open!

thanks for the help in advance!

 

id go with the 1600's... you might want to get the injector driver box though for better control down low in the rpm range

 

i've heard EMS's need driver boxes for anything over 1000cc....and that most any standalone is the same way

 

coo...thanks!

 

how big is your motor... if its 2.0l or bigger 1600 will run fine with an ems (cant speak for anything else as i havent used 1600cc with anything else) if its smaller than 2liter then the idle will have to be a little high to be stable. or you can get an injector driver box and they will idle like factory injectors.

 

i thought about using 1600cc injectors in my build for 450whp on 91 octane. but my reason is because i plan to build and build and build and hopefully hit 550 to 600 one day. and 1600cc will be good for that i believe.

 

u dont neeed 1600cc the utah crew uses 1000cc msd rodchesters and i have my base fuel pressure at 45psi to 50psi and i made 820 on the gt42r around there 789 uncorrected about and im only using 67% duty cycle with my aeromotive a1000 and -8 feed and -6 return

 

so i should drop to 1000cc like you have? and not worry about gettin bigger until 1000cc becomes a problem? or is 1000cc to big for 450whp?

 

1000cc will idle so much better than those bigger injectors

 

Sump the tank, Aeromitive eliminator pump with 13-14 volts, -10 feed, 1000cc injectors, Fuel Pressure 60 psi, 1:1 regulator. At 40psi of manifold pressure you should see 100 psi of fuel pressure. If fuel pressure drops badly, you have an issue that needs to be fixed. Sounds easy enough....

 

what ems r u running. i had 1600's on my car (only for about 3 months until i bought my own set of 880's) with an aem ems. it ran and idled very smooth. besides the 1600's and the 1200's cost the same right. what if u run out of room with the 1200's? just my opinion though. good luck with ur set-up.

 

what do you mean by run out of room with 1200cc injectors? if 1000cc injectors will do for a car 800whp?

 

im running aem ems now. ive ran 1000cc's before and havent had an idle issue. i have a friend in atlanta running the 1600cc precision injectors and hasnt had any probems so far. ill probably buy a set of 1600cc's and see how they idle...if they dont work then ill by rc 1200cc's.

as far as how big my motor is going to be...ill let cortney do the explaining on that one. im pretty sure its being built to handle just about whatever i through at it!

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by JDogg &raquo;</TD></TR><TR><TD CLASS="quote">its smaller than 2liter then the idle will have to be a little high to be stable. or you can get an injector driver box and they will idle like factory injectors.</TD></TR></TABLE>

What is that, how does it work? I thought the difficulty in idling came from the injectors physical inability to open and close in such a short amount of time..

 

TTT

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by rorik &raquo;</TD></TR><TR><TD CLASS="quote">

What is that, how does it work? I thought the difficulty in idling came from the injectors physical inability to open and close in such a short amount of time..</TD></TR></TABLE>

exactly... big motors need more fuel to idle than small motors, so it dosnt matter if they are slow wiht a big motor

 

How much power can the 880cc's hold?

 

Kyle Hererra has 880cc injectors 500+hp. His fastest pass is 10.17 on a small bore B18C. While tuning injector duty was 95%

 

dang 880cc holding 500+hp while does ppl tell me 1000cc then?

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by JDogg &raquo;</TD></TR><TR><TD CLASS="quote">

exactly... big motors need more fuel to idle than small motors, so it dosnt matter if they are slow wiht a big motor</TD></TR></TABLE>

"you might want to get the injector driver box though for better control down low in the rpm range"

I realize that a larger motor needs more fuel to idle. My question is what does the driver box do? If it comes down to the injector's physical inability to meter fuel in such a small quantity, how could any "box" alter that, and allow you to idle on 1600cc injectors??

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by B18Sleeper &raquo;</TD></TR><TR><TD CLASS="quote">dang 880cc holding 500+hp while does ppl tell me 1000cc then?</TD></TR></TABLE>We run higher base fuel pressures than most.

 

so is that good or bad? i would like to build my motor to one day above 500whp right now my goal is 400whp. so is 1000cc to over the top?

 

High fuel pressure can make injector life shorter but personally think they atomize better.

 

Thanks

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by rorik &raquo;</TD></TR><TR><TD CLASS="quote">

"you might want to get the injector driver box though for better control down low in the rpm range"

I realize that a larger motor needs more fuel to idle. My question is what does the driver box do? If it comes down to the injector's physical inability to meter fuel in such a small quantity, how could any "box" alter that, and allow you to idle on 1600cc injectors?? </TD></TR></TABLE>

its not the injector itself, its the ECU/ecm/ems/ controlling it... if you add the driver box, it helps the ecu control the injectors.