iam trying to get my swap running right....
its a obd1 ls motor into a std civic...

my problem is at about half throttle it cutts back like its starving for fuel...alsoif i try to throw it right into wot it also acts like its starving for fuel...

ive got the right fuel pressure...

the only codes iam getting are o2 and evac (because i unpluged them)
and acording to honda these wont cause this problem..

please any help would be great...and you would be my new hero

also if u think u can help and need more info plz ask...

 

First of all, you need to plug both of those sensors in. The car will not operate correctly, especially with the O2 unplugged. Whoever at Honda told you that you don't need these sensors is smoking crack. Plug those two sensors in, reset the ecu, and go for a test drive.

 

how many o2 sensors do you have? if you have two the factory one on the harness is the secondary o2, the other that you would have to add is the primary o2. that was my problem. good luck

 

isnt the o2 only used during steady rev??they said it goes to a default program when it is in wot...as for the evac iam not fully sure on but its dose it even with these pluged in...can u think of anything else..????

redline thanks for the reply and your help..

 

jdm hatch i belive i only run 1 o2 sensor on a obd1 motor...but could u explane your problem differently for some reson i cant comprehend it right now..(a little pissed at my car)...thanks mike

 

maybe yoru fuel pump is no good, it is a old fuel pump trying to pump a motor way bigger than stock

 

naaa its got good presure

 

ttt