Hep me Hep me!!!!
I am building a streetable ramrod. I will plant it into a 91 EF Hatch. I am using a complete OBD1 harness swap with a P72 ECU compatable with the B18C1 head I am using.
The original injector markings appear to be: "KEI HIN" "5IBN" they have blue paint splashes.
What do I do? HAHAha?? I have no plans of dropping off a flatbed in the Moroso parking lot. I just want a fuel delivery system compatible with a 190 - 200 HP build using a P72 ECU.
Peak and hold vs saturated injectors. intank fuel pumps vs inline. fuel pumping levels. ETC. What has worked for youins??? Thanks, fobile missile

 

get a intake fuel pump and a set of injectors around 300cc's, u can't use the whoel obd1 harness in the 91 it just won't work . u will need to get peak and hold style injetors just liek ur car is setup for..... u could always get some stock dsm's that are 450cc's and use some type of stand alone such as AEM or hondata

 

hello red, I have a resistor box available from the B18A1 engine extraction. Will the peak and hold injectors have any P72 ECU problems? I do have both in dash and engine bay harnesses plus both dash and engine fuse boxes. Are you saying I do-not have to swap out both electrical areas? That would be cool. Sounds like you've just saved me a month or so!!! Ha.
What is a good fuel pump for me to use? Thanks for your help. fobile missile.

 

i would not suggest swaping all that out where theres no need to . just get a obd0-obd1 conversion harness, and make a sub-harness for the wire u need to add. talk to blown90hatch , he builds these harness's.... and no u woun't have any problem with using that ecu with the resistor box ur car is wired for that so it will work just like its suppose too.......... and for a pump a warboro is what most people on here use... what year car did u say it was 91 right.... is it a dx?if so ur gonna have to do a multiport conversion also.. which mean ur whole engine harness is going to have to be rebuilt.. unless u have a hf or an Si. then u'll just have to ad the wire that i said before

 

hey rrrev, I am going to swap into a 91 std Hatch(EF). It uses dual injection. The engine is a crossover Honda setup made between the old carbs and the multi-port injectors. I have an OBD1 full harness. I originally did not intend to use the EF harness at all - complete replacement. I think I will have better control over the B18C1 cylinder head if I use a complete OBD1 harness. I just look out at all the injectors and get mixed up about what can be used with the P72. I have been told I have to use high impedance - I have been told I have to use low impedance. HaHAha. Some aspects of building are like watching a dog chase his tail!!!!! Thanks for the fuel pump info. fobile missile

 

there have been several articles on doing multiport conversions.. and u don't need to use the obd1 harness u can use it for parts to make a custom harness for ur car.. talk to blown90hatch he's a master at doing this.. if u were closer i' tell u to come to my shop , my buddie does multi-port conversions plus he can wire ur car for 0bd1 at the same time, for the obd1 part he buys a conversion harness from blown90hatch(he makes them also) and there is a sub harness u run off of that.. makes it really simple to convert those cars to obd1