its a d16y8 in a 2000 civic, lowered compression to 9.5.1 and its bored 20 over 75.5mm now...

when i first installed it i was running my chipped obd1 ecu with uberdata and dsm 450's and a walbro 255 with no CEL's. I now need to get it inspected, i put my stock injectors back in, plugged up my oem obd2 ecu and now its throwing 4 codes.

po325 - malfunction exists in the electrical circuit for knock sensor 1
po1457 - unable to pull vacuum in tank
po172 - fuel system for bank one is too rich
po170 - ???

i guess it may be too rich due to still running the walbro 255 but i can cut that back with my afc, and i guess having lower compression may have something to do with it aswell, but as for the p01457 i have no clue

any input on any of this would be greatly appreciated...

 

You sure you read the 170 code correctly? Is there any fuel adjustments to your AFC, if so put them all back to 0 or take it out completely. You dont want to use the AFC to change your fuel for this because then youll get a "running lean code".

If you have a stock fuel pump try swapping that out, but really as long as you dont have an adjustible fuel pressure regulator your fuel pump wouldnt be causing this code.

For the vacuum only thing i could think of is your charcoal canaster. Is that there and all the correct hoses hooked up? Maybe its clogged?

For the knock, just wire up your knock sensor.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by fresh pizza guy &raquo;</TD></TR><TR><TD CLASS="quote">po1457 - unable to pull vacuum in tank
</TD></TR></TABLE>

Sounds like your EVAP purge solenoid is not plugged in or connected. If its disconnected, then the solenoid will never open. This would cause no vacuum to get pulled in the tank(extra gas tank pressure will not get sucked out of tank and into the charcoal canister).

If the solenoid is hooked up, then do what Luserkid suggested.

DAN

 

the charcoal canister is there and hooked up properly. i dont not have my stock fuel pump anymore, and all the settings on the afc are at Zero... i guess i only have it for kind of a bling factor.

is there anything else you guys can think of.

 

i think you should hook your battery up backwards . that will clear all your codes, and you wont have to worry about that ecu giving you anymore problems. then buy a holley 7fiddy double pumper and replace your tb with it . viola problem solved. oh and you need new kanibler pins (platinum) gold wears out too quick. JK .....BUMP to help out my bro.

 

wont the 7fiddy make it run too fast for the street and my tires would probably pop off due to the bling on the kanibler's...?