as post says, need to know whats the max hp for stock injectors, thanks

 

Somewhere around the 200+ whp mark.
Also depends on what fuel pressure, fuel pump you're running and tuning tools.

I'm sure there's a post or two about this if you'd searched a bit.

 

what zyg said...about 200whp..and that is usually with ugly high fuel pressure.

 

also depends on a/f ratio and rpm. you could have 100% duty cycle on nearly stock setup at high rpm

 

I couldn't get my car past 180whp with stock injectors at stock fuel pressure. The car was running off the chart lean (as in 18:1) at one point of the graph.

I do believe the dyno jet I was on read very low, but like others have said 200whp would probably be pushing it to the extreme.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by ActiveAero &raquo;</TD></TR><TR><TD CLASS="quote">I couldn't get my car past 180whp with stock injectors at stock fuel pressure. </TD></TR></TABLE>
I'll let you know. Presently at about 178 whp on a dynojet with the fuel pressure (hose off) set at about 60 psi after some cam tuning.
Stock cams, Mugen intake, Toda gears, DC 4-1 (modified 2 1/2" collector), aftermarket cat, 2 1/2" SMSP double resonated and muffled exhaust, 18 degrees of timing.



Within the next couple weeks I'm going back to the same dyno with a test pipe/Mugen ECU/VAFC to see what we can get out of it (and still keep it somewhat safe and reliable).

Also plan to send the injectors out to RC for a cleaning (and now that I think of it, maybe I'll have them open them up a bit).

 

FYI ITR fuel injectors are the same as every other B-series injector, 240cc.

With that being said, tuning a STOCK ITR with a fuel pressure regulator and Hondata/uberdata...etc, will almost max out injector duty cycle after 8000rpms.

Happy tuning

 

i dynoed @ 181whp with dc-4-1 header, and autozone intake, and stock exhaust system with muffler with 40psi fuel pressure.....i just want to see if the injectors will let me get any higher...or should i just go with some 310cc or something

jon

 

 

I think 181's pretty well done unless you are willing to do some tweaking of the cam gears.

In a previous state of tune, my car was at this with OEM injectors:



I now have bigger injectors <u>and</u> Steve has backed off a little on the HP to preserve the life expectancy of a motor that basically never gets a break.

I notice you ran on Abacus, but your profile says you're in Florida. Did Abacus bring the truck dyno out to a NASA South East event?

 

it was @ panama city tuner bash

 

At stock fuel pressure my stock injectors ran out at 183hp when tuning my Buddy Club Spec III+ Cams. We hit a lean spot at 6200rpm and couldn't add any more fuel through Hondata.

 

so.. what size injector is good if i am looking to get just little over 200 whp +
with cams and stuff?
thanks

 

I got some OBD 2 prelude injectors (280cc) for sale if anybody is interested

 

what size is stock R's injectoR?

 

stock ITR injectors are 240cc

 

I did 201 on stock R injectors on a dynojet, fuel pessure was real hight though...59psi @ WOT

 

sorry. u guys know the size for obd1 h22 injectors?

 

obd1 h22 = 345cc (peak and hold, requires resistor pack)
obd2 h22 = 290cc (saturated, plug n play)

 

in response to my dyno sheet that was posted above. i need to add, that i am making my injectors out hardcore, by 8 i am at 100%. I need to get new ones. just a heads up for reading my sheet up there

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by BlueR &raquo;</TD></TR><TR><TD CLASS="quote">obd1 h22 = 345cc (peak and hold, requires resistor pack)
obd2 h22 = 290cc (saturated, plug n play)</TD></TR></TABLE>

thanks blueR that's great information.. i wanted to know what's the differance in them..
so if i get ....saturated.. i need nothing correct?

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by itr1244 &raquo;</TD></TR><TR><TD CLASS="quote">
so if i get ....saturated.. i need nothing correct?
</TD></TR></TABLE>

yes

 

With Peak N hold you don't have to get the resister pack off another honda. You can go radio shack and buy some resistors (Don't remember which ones you need)... Obviously the resister pack is a much cleaner job.

 

is RC440cc too large of an injector for N/A set up R's?
it's pretty hard to get 310 on my hands now

 

How do you know what percentage your injectors are running at what RPM?
Is there a sensor to read the duty cycle?

I want to know this cause a friend is running stock ITR injectors with Toda-C and making about 180hp on the dyno.
Now he is thinking should he change to H22 injectors or Accord 2-liter injectors.