It's been long since i posted up here, got out of cars in to bikes but recentlly hydrolock my b18b and just installed a b20b. Now the car runs nice, feels like more power but when i push the car hard up to red line check engine comes up. obd2 pc tells us the car is running too lean-ritch. So now i gues i would need a FPR to increase the amount of fuel to the motor? Anybody else had a problem like that. That little increase in displacment( 0.2) would make that big of a difference??
thanx
guys

 

never had a problem with the fuel pressure.. but it didnt run a lot smoother when i bumped up the pressure..

 

well i hooked up another obd2 scanner and it showed me code i think it was p0171 which means pretty much the car is running lean. I'm running a b18b computer maybe i will need a crv computer?? this thing is killing me lol

 

Yep. You've nailed it.. you need the matching ECU for your motor.

The B18B1's ECU fuel map is suited for a smaller displacement motor (obivously) and it stands to reason that the injector cycle is a little too short for the B20B.

Moved to Engine Swaps..

 

thanx for your help guys. another question
can i just get apex afc and use it to change the fuel map or maybe get my b18b computer and reprogram it with a custom map???

 

that is BS the b18b actually has a higher compression ratio and requires a larger amount of fuel. if anything the b20 needs less fuel. i have seen many dyno maps and the b20 using the b18b ecu usually needs fuel taken out. there are other issues here