Im having a problem running real rich all through the rpm's. The motor is a b20b with skunk i/m, DC ITR header, stock cams, stock pistons and all the things to tune it myself, AFC, and a FPR.

I swapped out my old injectors and fuel rail for RC 270cc injectors and a STR fuel rail. The swap went smoothly, no leaks, everything seemed to seal up fine. I set the FPR at about 40 when i took off the vacum hose. The AFC was already set at -6 of correction at 1000-2000rpms. When i start it up its running way to rich. The exhaust was popping non-stop. Heres where it scares me, in order to have it idle descently i have to lean it out with the AFC -44 of correction. Isnt that way to much to lean it out at? The injectors are only 270cc and the old injectors were 240cc (stock b18a injectors). There shouldnt of been that much of correction with the AFC right?

Im begging for any help cuase i really dont want to wash my cylinder walls down or run way to lean where i screw something up.

thanks, aaron

 

That has been done also, nothing really happened after resetting it. Its a pr4 ecu (obd0 is retarded, doesnt really learn much ).

 

bump please

 

How would i know if they were stuck open? It would make sense that they would be cuase im having to lean it out almost half. I might just throw my stock injectors back in, this is becoming a hassle in a half.

 

what pressure were the injectors rated at first of all, it may just be too high of a fuel pressure.

i don't think you even needed them to begin with though

 

Are you running peak and hold or saturated? What ECU? Chipped?

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by pontiac power &raquo;</TD></TR><TR><TD CLASS="quote">i have to keep deleting my posts cause i can only have 5 per day.

he said it was obd0 so i am assumbing saturated</TD></TR></TABLE>

Oh, I didn't see that. Well in that case he should be running peak and hold injectors. Are you sure the injectors are peak and hold? There are part numbers on the injector that tell you.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by pontiac power &raquo;</TD></TR><TR><TD CLASS="quote">what pressure were the injectors rated at first of all, it may just be too high of a fuel pressure.

i don't think you even needed them to begin with though</TD></TR></TABLE>

The injectors are RC 270cc, well the old injectors ticked real loud and knew they werent in the best of shape, so i decided to replace them.

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by skunked &raquo;</TD></TR><TR><TD CLASS="quote">Are you running peak and hold or saturated? What ECU? Chipped?</TD></TR></TABLE>

peak & hold, and the ecu is a stock obd0 pr4 LS ecu

 

Do you have a wideband on the car? I don't see how 270's would run rich on a 2.0L unless it had a $hitty program dump'n too much fuel.

 

no wideband, only a SAFC

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by AllMotorDA9 &raquo;</TD></TR><TR><TD CLASS="quote">no wideband, only a SAFC</TD></TR></TABLE>

I would get a wideband reading on the setup before playing with it anymore. Did you buy the injectors used or new? Maybe you have a bad injector causing it to run rough? It hard to diagnose not knowing the A/F ratio.

 

The injectors are new from RC. How much does a wideband go for, ill try anything to make it run like a champ again.

 

$300 and up. Or go to the dyno for a tune.......

 

i wouldn't lean the motor out that much after 10 the ecu starts adjusting timing i think you need to get the car on a dyno for some fuel tuning i swaped a gsr onto a stock jdm b20 and just at idle you couldn't be in the garage i would realy think about going to a dyno sooooon you could ruin the rings if you keep it like that

 

I need to do something quick cuase i dont want to screw my motor up. Who makes a a/f guage that actually gives you a percise read out unlike those auto-meter ones.

 

http://www.innovatemotorsports...1.php

 

maybe its the supra wing you got on ur da9

jk

wat up aaron

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by skunked &raquo;</TD></TR><TR><TD CLASS="quote">http://www.innovatemotorsports...1.php</TD></TR></TABLE>

thanks for the link, this might come in handy later on.

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by VtecSpool &raquo;</TD></TR><TR><TD CLASS="quote">maybe its the supra wing you got on ur da9

jk

wat up aaron </TD></TR></TABLE>

supra wing?

sup minivan!

 

go to toms shop...my mx6 is in there with a jdm klze built head and block 210 horses

i am working in stuart now (wallace mazda) i'm waiting to get a paint job to go out to the meets with u

 

aaron u wanna go to the honda-tech southeast meet with me???? its on a weekend, take two cars...play cat & mouse the whole way to miami

 

Im probably going to use toms dyno to tune my car cuase my fuel is so out of wack. So ill see your barge there.

When and where exactly is the meet being held? I might have to work saturday.

 

ok, **** the honda-tech meet


how about something bigger & better.....orlando....

hot imports night saturday april 16th @ 5:00 pm till??????

let me know if ur down...take two cars

https://www.overboost.com/tickets_show.asp?id=1709

 

@ work bump