alright.. i have a b16a in my 91 hatchback... the motor has low low miles on it and runs beautiful..excpet for when u go to hit the throttle it takes a secound to lean itslef out a bit because of it seems to be getting way to much fuel... when i say rich i mean its can throw flames out of the exhaust pipe..lol.. do you think it has anything to do with my ecu? its a obd0 pw0 ecu

 

Do you have any CELs?
Hows the gas mileage?
And are you running both O2 sensors?

 

did have some cels a few weeks ago.. i think most of them are cleared up.. i havent reset the ecu... i thought it was acting funny b/c of my blown head gasket so i took the top end apart and ended up replacing the valve and head cover gaskets, cam seals, water pump was bad so i replaced that, along with a new thermosat.. now im back to it runnning really rich again... gas milage is ok but could be beter, ive only put about 150 miles on it since the swap was done..


and yes i have both o2 sensors inn

 

and i have tryed different map sensors,, ive swaped on the 02 sensors pins around at the ecu.

 

anyone?

 

mine did the same..except im running a pr3. i did a little tuning..leaned the fuel mixture some..lil datalogging and you can fix that

 

yea that sounds right... i just dont know alot about doing the work itself... but when i put the head back on and hooked everything back up i hooked up the iacv which wasnt pluged in be for we took the motor apart. and befor this was pluged in it ran rich but not as bad as it is now. so im stumped

 

does that mean my iacv is bad and mybe my ecu is fine..? mybe it could be both i just think its weird how it ran alittle better when it wasnt pluged in, it still wasnt 100 percent. but it runs les richer unpluged bs pluged in

 

by data logging do u mean burning a new base map or just redoing the one u already have?

 

check your vaccum lines on your throttle body, i had the vaccum lines for the map sensor and charcoal canister backwards. check those out., also make sure the o2s arent in backwards. check to make sure your fuel pressure reg isnt leaking or an injector isnt leaking or stuck. good luck, hope u get it fixed

 

even though o2 sensors are for idle would they still cause it t get loaded up like it does? and ill check out the vacum lines... thanks alot man. i need to get the bitch right so i can start getting ready for boost but with all this **** goin on who knows how long that will be