What is the max injector size i run with stock ECU? 310cc? and where can i buy them online? im not looking for exellent idle, as long as it's good. dont have enough cash now for hondata.

my fuel setup is FMU 12:1 and VAFC and im running lean. What do u guys suggest i get now and where to buy online? im installing an airtex fuel pump to try out maybe tom.

i would also like to know if i should get saturated or peak and hold type. thanks

 

anyone????? can i go with 370cc stock ECU, VAFC, 12:1 FMU and inline pump??? good idle?

 

this is another beaten to death question, but I'm not going to ridicule you because you obviously need some help. the lagest I have idled without a piggyback are 310's this works but you do run pretty rich around idle. you can idle as big as 450's with an afc though. if you wanna run 370's, the 12:1 disk in the fmu is way to much gas. I'm not positive but I think vortech has a 6:1 disk that you can use. the car will idle fine as long as you have the afc adjusted, if not the motor will have a hard time starting and run like pure poopy at idle. go with 440's or 450's a vafc and ditcht he FMU. the car will idle fine.

 

What will happen if i use the 370cc, airtex fuel inline pump and 12:1 FMU with a VAFC? i already have the FMU and i don't want to change the rising rate anymore. please tell me i can do this.


[Modified by Turbo_Si, 9:40 PM 7/23/2002]

 

not to be the same old ***...but, use the search function and also check archived topics. this question was asked last week and probably the week before. You don't need the pump or the FMU with the VAFC. 12:1 with the 370's alone would probably be too much fuel.

 

how about 310cc with 12:1 FMU, inline fuel pump and VAFC? sound good?

 

Ive got the 500's, vafc, fpr, and 4:1 no idle problems

 

yeah... u also got a F22b!

 

i'm using 720's, idles great. 20 psi of fuel pressure while idling

 

Let me rephrase my question a bit. im looking for an injector size that will go with my 12:1 FMU, airtex inline pump and VAFC. my requirements are good idle and
compatible with stock ecu.

 

can i go with 370cc, 12:1 FMU, airtex inline pump and VAFC??????

 

A 12:1 rise rate is meant for small/tiny injectors. Why are you so married to this rise rate? I have 320cc injectors and have my rise rate at 3:1.

12:1 will put the fuel pump and fuel system under a lot of stress that is just not needed. Maybe if you downgraded to really small Civic injectors and slapped on a huge fuel pump the 12:1 would work... until your fuel lines explode under 150psi!!!


[Modified by Holden, 8:51 AM 7/26/2002]

 

I have ran injectors up to 440 cc with just an afc to control the idle, partial throttle and full throttle with a stock obdII ecu.
EVIL

 

I have 310cc with a 12:1 FMU, VAFC, and B&M FPR. I have to lean it out so much in the top end (like -32%). I would suggest just changing your disk size to an 8:1 or 6:1. I still idle fine but I had to pull alot out and my FP is high at 8k rpms so I used the B&M to bring down FP.

 

i was insisting the 12:1 because of two reasons. First is that it would be very hard for me to get a downgrade kit. 2nd is just the other day when we were tuning my turbo with a Motec lambda meter, readings were very lean. Vafc settings were already at +40 and up which is very scary. my fuel setup then was a 12:1 and VAFC so i came to the conclusion that i needed bigger injectors. initially i planned on getting 310 but since im getting a set might as well get 1 step bigger right? that's when i came up with the 370cc setup.

Although dutchie told me that the lean condition might be because i have not installed the airtex inline fuel pump. Could this be the reason? do u guys think that as soon as i install the Airtex unit, i will richen big time? or do i really need the injectors?

 

hard to get a downgrade kit? approximately 10 dollars at vortec.... and if you want to blow it up or flood it.. fine do the 12:1 w/ 370's.. but i'm here to tell you I have 370's and an fmu and run a 8-1 disk.... and it runs ok...

if you ask the question and get the good advice, reguardless of whetehr it's what you want to hear... then stick with waht you have and go blow your motor...

 

Hey Kirk, I thought that was you.
You still haven't tried it with the inline? I still say you will be fine with that in there and your stock injectors for now. If you still have those 310cc's you might as well use them, you should be able to lean it out enough with the AFC. I wouldn't suggest 370's because you will still have to run a FMU (with lower disk). Tune it with the inline and stock injectors for now until you can pick up a set of DSM 450's and use the AFC hack.

 

dave, still havn't tried the 310s yet. the fuel pump is still in my trunk. i might get it installed by monday. il try out the fuel pump with the 310s first to see if il be over rich. u really think i can get away with just the pump? will my car instantly run rich after i have the pump installed?

ever heard vortech injectors? i saw in their site they have it and they are less than $50 a piece. are they good?


[Modified by Turbo_Si, 9:43 AM 7/26/2002]

 

I think you will be rich with the pump and 310's, but you should be able to dial it out with the VAFC. The reason I am suggesting going without the 310's is because if it works without them, you have time to decide on your permanent fuel setup. How long can you keep those 310's anyway?
I haven't heard of the Vortech injectors so I'm not sure if they are any good. I guess you didn't get those DSM's you were looking at?

 

I don't know if i'm reading it wrong or so, but do you have an inline fuel pump installed at all? If its not install that right away. Stock injectors with a 12:1 FMU without an inline will cause your car to run lean. Install the inline pump asap and you'll see your car will run better and you won't need to get 310s and downgrade the FMU.

 

Dave, havn't tried it out yet. maybe il be installing the pump tonight. a guy is offering me 250 for RC 310 injectors. used. is that good? the vortech injectors are cheap... $50 a piece. check it out... http://www.vortechsuperchargers.com

b18b98, that's what im about to do. try out the inline pump first before getting the 310s. dave, is right. next time i might want to go with Hondata or some other standalone and the 310s might limit me.