hello, i am a new user and im desprite for help. i have a civic with and obd1 b18b1, it was running fine but now it bogs out when u rev it, and the air fuel ratio is maxed it rich 10.0. so i took the 780cc injectors out and put 480cc in but tht still didnt help, it took the back firing and the poping out but still bogging when i rev it, the car just falls on its face. it idles fine fires up fine but when revd fast or not even that fast it bogs out, so please if you have any ideas id appricate it alot.... im dieing to drive it with the new set up before it gets to cold


thanks

 

tune it or put stock injectors in it.

 

Built for what? Turbo? Are you running any engine management? CROME, Hondata, Neptune, Ectune? Is the ECU stock? Changing injectors are going to do squat by itself. DId you upgrade and not tune/retuned? IS it even tuned in the first place?

 

yes built motor, turbo, my old setup was tuned on hondata s200 and we didnt change anything on the tune or ecu since we put the built motor and new turbo setup on, same ecu and s200 with my old tune should of still been on it, see just the other day it was reving fine with the 780s in it now its acting funny, it keeps bogging out when revd and its a brand new motor no miles havnt even got to set the ring in yet due to this problem

 

If you change anything from the original tune you have to have it retuned. No exceptions.

 

shouldnt i put sum miles on it for i get that brand new motor ran hard on a dyno, or just a base tune

 

Break the engine in on the dyno. Period.

 

are you postive bc just last week it was reving and runing fine

 

How old are the spark plugs in it? Maybe no spark in one of the cylinders? Just a thought...

 

Are you datalogging? Wideband to monitor your AFRs? When you tune for one setup and then change it YOU HAVE TO GET IT RETUNED!!! It may have "run fine" last week but it aint now. Me I don't care either way. If I were you I'd AT LEAST go and ask a real tuner to look at it or take it to a shop.

 

the AFR is maxed out rich 10.0, n its a aem wideband, and i called slowmotion motorsports yesterday but there 2 hours away from me

 

So? I have to drive 6 hours every time I need a retune. Did you at least check your timing?

 

yes the timing is dead on

 

Retune. Don't what else to tell you.