tales sol

hey guys my cel is flashing to tel me my injectors are maxing out when im flat (apexi power fc)
im just wondering would i benifit from fitting a set of injectors from a 93 h22 prelude or are they compatible?

my setup:
97 JDM ITR engine
S2 stage 2 tuner cams
S2 cam gears
DC 4-1 header
D-cat
S2 70mm cat back
j's intake with custom heat sheild
Blox 70mm TB
hodata IM gasket
Iridium plugs
Magnecor leads
Apexi Power FC

Soon to come:
magnus motorsport IM
KMS valve springs
Spoon head gasket
possibly KMS valves?

baonest

im having a hard time believing R injectors are being maxxed out.

but who knows

Bradstard

tales sol

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by baonest &raquo;</TD></TR><TR><TD CLASS="quote">im having a hard time believing R injectors are being maxxed out.but who knows</TD></TR></TABLE>why is that? there only the same size as any other b series injector!

SoTexDC2

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by tales sol &raquo;</TD></TR><TR><TD CLASS="quote">why is that? there only the same size as any other b series injector!</TD></TR></TABLE>

Because of the mods you have done. Your OEM injectors should be enough for your setup.

Who tuned this car? Was it tuned properly on a dyno?

kaliparts

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by tales sol &raquo;</TD></TR><TR><TD CLASS="quote">why is that? there only the same size as any other b series injector!</TD></TR></TABLE>


ls motors and gsr motors have 240cc injectors

itr motors have 270 cc injectors stock

tales sol

yes it was set up on a dyno but i didnt feel he did a good job, i was still getting knock and flat spots after it was done.i will be getting it done again by another tuner soon after i fit the magnus IM and new valve springs and a few other bits.any search i did here on H-T said that the ITR injectors were 240cc.

sander

It is very possible that your injectors are maxed out. They are tuned from the factory at almost max duty!

Use a balanced injector when ever possible. You never know the condition of old injectors. RC injectors are good NEW (440cc would suit you fine.)

Also make sure your not encountering fuel pump problems that could be leading you to believe your injectors are maxed, when it is just your fuel pump that is not doing the job. Check your fuel pressure on a dyno and make sure it is not dropping at high load.

sander.

IntegraTionR

@ what RPM do your CEL flashes?

tales sol

thanks sander.

its flashing in the high rpms, up around 6.5-7k onwards, happens more on a good cold night, obviously due to the colder denser air providing a higher demand for more fuel!

vtec2nv

i dont know why your injectors would be maxing out. I have seen cars with more mods, running stock injectors. i think its odd. ::::confused:::::

sander

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by vtec2nv &raquo;</TD></TR><TR><TD CLASS="quote">i dont know why your injectors would be maxing out. I have seen cars with more mods, running stock injectors. i think its odd. ::::confused:::::</TD></TR></TABLE>

fuel pressure regulators allow you to go nuts with duty. They also may not be aware that they are at max duty.

you can go up to 110% with hondata which is techincally impossible.

Little_Nolan

iTrader: (3)

If I remember correctly my injectors were maxing out with similar setup and tuned on Power FC. H22 injectors were swapped in place

IntegraTionR

are you sure its the injectors that are maxing out? or is it flashing due to the knock? knock will trigger flashing CEL with power FC

Clerique

I also have a 96 JDM ITR. When my engine was stock, with the exceptions of a 98 Header and 5Zigen Fireball exhaust, my Apexi Power FC also showed 100% duty cycle at high RPM in 5th gear.

I don't think the Power FC gives consideration to increased fuel pressures (you'll have to work out that math urself), but you can easily input the percentage difference of larger injectors with the commander.

I am currently in the market for some 370's, as I'll be running bigger cams and more compression.

Thank God 4 Vtec

Hi guys slight O-T but would anyone know what map sensors we can runs with the power fc on a boosted b18cr?

EG6-DC2

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by boostn92vx &raquo;</TD></TR><TR><TD CLASS="quote">If I remember correctly my injectors were maxing out with similar setup and tuned on Power FC. H22 injectors were swapped in place </TD></TR></TABLE>

This is correct, though you have to make sure the prelude injectors are from a 97-01 Prelude. '93 H22 ones will not work without modifications. Additionally, this motor was tuned by Jack at P1.

Little_Nolan

iTrader: (3)

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by EG6-DC2 &raquo;</TD></TR><TR><TD CLASS="quote">

This is correct, though you have to make sure the prelude injectors are from a 97-01 Prelude. '93 H22 ones will not work without modifications. Additionally, this motor was tuned by Jack at P1. </TD></TR></TABLE>

^Thats why it runs sooo well

tales sol

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by IntegraTionR &raquo;</TD></TR><TR><TD CLASS="quote">are you sure its the injectors that are maxing out? or is it flashing due to the knock? knock will trigger flashing CEL with power FC</TD></TR></TABLE>

no its defo for the injectors, the flashes for knock are much faster.

i forgot to mention i have a sard fpr too, after a search on here i found it was set too low, runs alot better now, i havent tried a good hard run yet to see if it made a difference to my flashing light!

i think i might just do that now.