Starns Honda

99 Si b16a
throwing codes
p0505 - idle air control
p0170 - fuel trim
p0141 - vtec system (no idea here.)
p1259 - secondary o2 (duh its not there to plug in)

after installing:
Victor X manifold (with b16 IACV)
Tanabe Concept G cat back
stock Catalytic converter (car was not equiped with one when purchased)
DC sports header
primary o2 sensor (plugged the secondary for the time being)

buddy of mine purchased the car about a month ago and we are fixing the previous owners fails. Header was welded to cat. Cat was welded to Exhaust, all o2 sensors removed. not to count all the other crap that was fixed prior to this. my main concern are the p0505 and p0170. idle is currently around 2k and wont come down so i assume there is a vacuum leak that i cant find. but also does the stupid idle flux from the IACV. any help/suggestions would be great.

Starns Honda

so im still tinkering because its driving me insane, the car at idle is fluxing super fast, if i unplug the IACV the fluxing does not stop but slows and continues to flux from the same RPM range.
not to sound like a total moron but...
wa wa wa wa wa wa wa
vs.
waaaa waaaa waaa waaa
i need a beer.

ktsciv93

the wambas eh. iac is probably clogged or just s*** the bed, carb cleaner works well. fuel trim, ur probly running Lean cuz of the mani. stock ecu im assuming? is vtec wired up? could b wiring or map sensor.