89 civic SOHC w/ V-tech head

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grassyfields9

Junior Member
I have an 89 civic DX hatch and was trying to get cheaper hp rather than swapping the whole motor can I swap the non v-tech head for v-tech and swap the DPFI for MPFI. If anyone has done this or knows if this can be done any help would be great.
 
Originally posted by grassyfields9@Mar 12 2005, 12:35 PM
I have an 89 civic DX hatch and was trying to get cheaper hp rather than swapping the whole motor can I swap the non v-tech head for v-tech and swap the DPFI for MPFI. If anyone has done this or knows if this can be done any help would be great.
[post=472603]Quoted post[/post]​

Yeah but you are going to have to find a way to activate VTEC I see alot of people sellng the multiport swap here on the site. Get a PM6 and the intake manifold and you might need a si dizzy. Its fairly easy search the reference section here on Hondaswap it will have all the info you need.
 
there are many many write ups regarding DPFI->MPFI as well as mini-me vtec head swap


vtech? :emofo: VTEC

mini-me sohc vtec head swap should yield about 130 horse...

but you need to activate vtec so you have 4 choices...

1. ghetto ass RPM activated switch
2. VAFC
3. OBD0 vtec computer, pw0 or pr3
4. OBD0->OBD1 converter and P28...

price all your options before you decide on a head swap...
you might find it cheaper and better gains to go with a ZC swap, or even B18 or something if you find a good deal...

vtec head costs at least 100
prob another 100 for the parts to swap DPFI->MPFI
intake mani, resistor box, and si ecu to name a few...
plus head gasket set...
the p28 = 100+ easy, OBD0->OBD1 converter = 100+
VAFC = around 250...
 
You can also use the ghetto ass toggle switch to activate VTEC instead of those methods, but should only be used to test VTEC. :ph34r:
 
Originally posted by reckedracing@Mar 12 2005, 03:04 PM
there are many many write ups regarding DPFI->MPFI as well as mini-me vtec head swap


vtech? :emofo: VTEC

mini-me sohc vtec head swap should yield about 130 horse...

but you need to activate vtec so you have 4 choices...

1. ghetto ass RPM activated switch
2. VAFC
3. OBD0 vtec computer, pw0 or pr3
4. OBD0->OBD1 converter and P28...

price all your options before you decide on a head swap...
you might find it cheaper and better gains to go with a ZC swap, or even B18 or something if you find a good deal...

vtec head costs at least 100
prob another 100 for the parts to swap DPFI->MPFI
intake mani, resistor box, and si ecu to name a few...
plus head gasket set...
the p28 = 100+ easy, OBD0->OBD1 converter = 100+
VAFC = around 250...
[post=472661]Quoted post[/post]​
 
Originally posted by grassyfields9+Mar 19 2005, 08:58 PM-->
reckedracing
@Mar 12 2005, 03:04 PM
there are many many write ups regarding DPFI->MPFI as well as mini-me vtec head swap


vtech? :emofo: VTEC

mini-me sohc vtec head swap should yield about 130 horse...

but you need to activate vtec so you have 4 choices...

1. ghetto ass RPM activated switch
2. VAFC
3. OBD0 vtec computer, pw0 or pr3
4. OBD0->OBD1 converter and P28...

price all your options before you decide on a head swap...
you might find it cheaper and better gains to go with a ZC swap, or even B18 or something if you find a good deal...

vtec head costs at least 100
prob another 100 for the parts to swap DPFI->MPFI
intake mani, resistor box, and si ecu to name a few...
plus head gasket set...
the p28 = 100+ easy, OBD0->OBD1 converter = 100+
VAFC = around 250...
[post=472661]Quoted post[/post]​

[post=475861]Quoted post[/post]​


If I were to convert to a PW0 or PR3, could I use the ECU with just the MPFI conversion, or would it be wiser to convert to VTEC at the same time too. Also, I have an intake setup from a 94 EX OBD-1 in order to use this do I have to use the P28?
Does the ECU conversion require a different harness if it is OBD0 or can you modify the existing?
Thanks for all your guys' help, I just want to do this right the first time.
 
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