The engine is a completely stock b18c-r. The only mods are a hytech header, catback, and j's intake.

So to manage the air/fuel, I decided to go s200 to just get the installation out the way for later uses.

I'm running a p28 chipped for hondata and a s200.

Had the motor street tuned with wideband for now.

Dyno before (dynopac):
http://deviantpixels.com/zdrive/dyno1.jpg

Dyno after (dynojet):
(I was told this was good because the dynos are different so it's really better than the before dyno which has a higher hp gain)
http://deviantpixels.com/zdrive/dyno3.jpg

Anyway, everything feels great. Definately feels smoother. The problem is when I come to a complete stop the idle surges between 1200 and 1500 rpm's. Then after doing this for a few seconds, it drops to about 1100 or 1200rpm's and holds a steady idle there.

Is there something wrong? I still have my jdm itr ecu and it idles perfectly fine with it installed (around 800rpm's) so it's something with the hondata I'm guessing.

Anybody know?

 

Idle air control valve duty cycle, try adjusting that.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by 92TypeR &raquo;</TD></TR><TR><TD CLASS="quote">Idle air control valve duty cycle, try adjusting that.</TD></TR></TABLE>

Adjusting it inside the hondata program?

Hopefully that wasn't a dumb question

And if it's not in the hondata program, why would it run perfectly with the oem ecu?

 

Yes, it is an option in the software.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by 92TypeR &raquo;</TD></TR><TR><TD CLASS="quote">Yes, it is an option in the software.</TD></TR></TABLE>

Cool, I'll ask the tuner. Thanks a lot for the help.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by 92TypeR &raquo;</TD></TR><TR><TD CLASS="quote">Idle air control valve duty cycle, try adjusting that.</TD></TR></TABLE>

I suffer from the same problem, I wonder why my tuner didn't adjust it when the car was dyno tuned.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by nholmes &raquo;</TD></TR><TR><TD CLASS="quote">I suffer from the same problem, I wonder why my tuner didn't adjust it when the car was dyno tuned. </TD></TR></TABLE>

Not sure, maybe it just didn't stand out. I don't think my car did it while it was getting tuned, then suddenly the day after I noticed it

It's like suddenly feeling sick after you just got back from the doctors.

 

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

I suffer from the same problem, I wonder why my tuner didn't adjust it when the car was dyno tuned. </TD></TR></TABLE>

X2

and I think to myself... "all luxury cars behave in this fashion."

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by kay_animation &raquo;</TD></TR><TR><TD CLASS="quote">The problem is when I come to a complete stop the idle surges between 1200 and 1500 rpm's. Then after doing this for a few seconds, it drops to about 1100 or 1200rpm's and holds a steady idle there.</TD></TR></TABLE>

Mine doesn't do it every time... seems like only after I beat on it. Perhaps it's the engine getting back at me. It's saying... "F your momma... here's a bad idle for you". I've also noticed that when using the a/c the idle wants to drop a bit and the varied idle sitution increases. BTW... S200B I'm using with a JRSC.

 

Emailed you.

If we just turn the duty cycle down a touch sometimes that fixes it.



-s