hi iam trying to put a d15b in my 90 civic dx and i need some help on it. i need to know how to make it mpfi and if i can use the d15b distributor or not. if i can how can i wire it up because the d15b distributor is 7 wires and the dx is 5 wires can you please help me

 

Do a search for MPFI Swap. You will need the MPFI intake manifold, TB, a PM6 Ecu(88-91Si) Si injectors, inj. resistor box and the Si distributor and run a few wires. I might be forgetting a few things but it's 3am

 

D15B2 or D15 VTEC?

 

i think he means d15b vtec since the b2 is dpfi. you'll use the d15b dist. also you're going to have to convert to obd1 or find another way to activate the vtec. once you do the mpfi swap you'll need the 7 wire dist. and the si dist will work on the d15b but it will have to be modified. so i'd do the mpfi swap, use search for that, either run a zdyne one wire or hondata ecu, or swap to obd1 and run a p28 ecu, search these also, and use the dist. that is on the motor.

 

i am going to swap it over to obd1 so how do i do the 7 wire dist

 

search the mpfi swap. those two wires are swapped over doing it. if you get an obd1 harness it should have the 7wire plug for the dist. i just went and got one from a junkyard off of an si and rewired my current harness.

 

my d15b vtec had the plugs still attached to the engine, and the wires cut. most of the wires color matched with my odb0 harness, and just the last two were fitted into the mpfi swap as stated above. But, if you wanted to really keep it odb0 you could still use a pr3 or pw0 to activate vtec. I was told that after I had already bought the stuff needed to convert over to odb1.

 

K, the motor is a JDM single cam. therefore there are no numbers other than d15b. Yes it is a VTEC single cam. Now all we need now is the schematics of the 92-95 ECU. Which wires go where and the color of them. Also, I don't think we have found how to wire in the 4 injectors that the motor has. It has been hard to look for stuff to do this swap. HAsport told us that they don't even make mounts for the swap since it is so hard. Sucks but we'll get 'er done! Any help would be greatly appreciated!

 

hasport doesn't make mounts for the d15b vtec because you can use your stock mounts, search on the mpfi swap there is many with a detail schematic on the wires. http://www.angelfire.com/d20/h....html

 

the mounts should all be the same except for you will have to use the drivers side mount bracket off of the old motor. search in the eg forum for the ecu pinouts.

 

http://www.hondaswap.com/forum...29360

 

What happens if you don't use the driver side mount off of the old engine? I don't believe that was done on my swap.

 

not the entire mount but just the bracket that the timing belt cover surrounds. i'm not sure what happens if you don't swap? they are definatly different though.