90redintegra

The car was orginial STD model so I did the swap for b18a out of integra. I changed the injector that I had in the garage which was little upgrade of 260cc more than factory I guess. However the fuel pump has not been touched, I'm asking you guys who might know this would that be the cause of bogging problem? I notice the fuel pressure only at 30 psi at idle? Integra factory manual stated it needs to be 37-44 psi at idle. Is it the injector too big for the STD pump? Do I need to change it back to stock injector or upgrade the pump? Which way is the best? any help would be awesome!




Modified by 90redintegra at 4:56 PM 12/16/2006

97grnrs

put stock injectors back and try it

blackeg

its not the pump, go back to the stock injectors then trouble shoot from there

90redintegra

Thanks! I'll go put the stocker back in there and let you guys know the results

90redintegra

Yep! it was the injector too big for the stock fuel pump. Guess whenever you upgrade the injector you need to upgrade the pump to keep the flow smooth. Thank you guys! I'm going to hit the track today last day before winter is done. Hopefully my swap is all worth it

90redintegra

I am very happy with it... went to the track expecting to run 9.5's in 1/8 mile track. I ran couple runs trying to get the feel of it (no rpm tach to know when to shift at) so my best run was 9.71 at 72.57mph it was hauling *** in first and second gear spinning a little bit. I am pretty sure with colder weather and better tire I should hit in the 9.5's. Today's weather was 78 degree with mild humidity so it wasn't a bad day of playing at the track.

However when I'm driving or cruising I can feel a little hestiation once a while so I'm hoping to get that bug taken cared of before spring time to hit the track. The fuel pressure still at 30psi which is low according to the factory spec which was supposed to be 37-44 psi so maybe the 16 years old fuel pump is wearing out who knows.