parts for d15b1 mpfi swap
03-23-2011, 10:03 AM
#1
Honda-Tech Member
Thread Starter
parts for d15b1 mpfi swap
Hi,
Ive searched a few forums and have seen multiple answers. I currently have a 1990 std civic with the original engine. I am trying to convert to MPFI.
What parts are required to perform this task? really curious to know what parts people have used and from what make/model car.
I have all of the wiring diagrams but curious to know what parts are needed and from what year/make.
Would it be wiser to convert the car to obd1?
From what I have gathered so far:
mpfi fuel injector resistor box (injector resistor box is only needed for a obd0 car)- Can be had from a 88-91 CRX/Civic Si or HF
Injectors:? from what car?88-91 civic si?
obd0 injectors need a resistor box- what injectors can be used? from what car?
obd1 injectors dont need a reisstor box- what injectors can be used? from what car?
ECU: si pm6 ecu? I have the current 4 speed manual tranny in my car, the PM6 is for a 5 speed.? what can i do?
Distributor:? 88-91 civic si?
Wiring Harness: Using the one thats in the car now and adding additional wiring.
Manifold:a z6 or y8 will work, SOHC ZC intake manifold.
Manifold gasket: make sure it matches the manifold
Fuel injector plugs: where do i get these and from what car? quantity of 4?
throttle body, fuel rail?
Ive searched a few forums and have seen multiple answers. I currently have a 1990 std civic with the original engine. I am trying to convert to MPFI.
What parts are required to perform this task? really curious to know what parts people have used and from what make/model car.
I have all of the wiring diagrams but curious to know what parts are needed and from what year/make.
Would it be wiser to convert the car to obd1?
From what I have gathered so far:
mpfi fuel injector resistor box (injector resistor box is only needed for a obd0 car)- Can be had from a 88-91 CRX/Civic Si or HF
Injectors:? from what car?88-91 civic si?
obd0 injectors need a resistor box- what injectors can be used? from what car?
obd1 injectors dont need a reisstor box- what injectors can be used? from what car?
ECU: si pm6 ecu? I have the current 4 speed manual tranny in my car, the PM6 is for a 5 speed.? what can i do?
Distributor:? 88-91 civic si?
Wiring Harness: Using the one thats in the car now and adding additional wiring.
Manifold:a z6 or y8 will work, SOHC ZC intake manifold.
Manifold gasket: make sure it matches the manifold
Fuel injector plugs: where do i get these and from what car? quantity of 4?
throttle body, fuel rail?
03-23-2011, 10:09 AM
#2
Honda-Tech Member
Re: parts for d15b1 mpfi swap
googled mpfi swap guide, this is the first link that popped up
http://www.clubcivic.com/board/showthread.php?t=54863
you're over thinking things a little bit. the ecu doesn't care what tranny is in your car as long as you're using a manual ecu with a manual transmission. injectors can come from an integra or a civic, idk if accords have different flow rates
http://www.clubcivic.com/board/showthread.php?t=54863
you're over thinking things a little bit. the ecu doesn't care what tranny is in your car as long as you're using a manual ecu with a manual transmission. injectors can come from an integra or a civic, idk if accords have different flow rates
06-21-2016, 10:27 AM
#3
Honda-Tech Member
Re: parts for d15b1 mpfi swap
if anyone has any more to add or if im wrong in any detail feel free to let me know.
OBD1 or OBD2 would be best. most of the OBD1 still used a resistor box. OBD2 does not.
injectors can come from just about any honda or acura.
88-91 civic (OBD0)
88-93 integra (OBD0/OBD1)
92-95 civic (OBD1)
89-90 accord (OBD1)
96-00 civic (OBD2)
94-00 integra (OBD2)
93-97 accord (OBD2)
ECU is a pm6 if you have a manual (how many gears doesnt matter, si has 5 base has 4. they use the same ecu for MPFI swap)
if you want to switch to an auto, you use a PS9
you can use ANY D series MPFI manifold. (D15B7, D16Y8, D16Y7, D16A6, D16ZC, D16Z6 etc.)
OBD1 manifolds and sensors for the most part have a lot of similar plugs, but if you grab an OBD1 manifold you will want to get ALL of the pigtails just in case.
if you go OBD2, you will likely NEED all of them, as OBD2 switched to deutsch style connectors, and a couple of the plugs have a wire extra or a wire less than OBD0/OBD1. (i.E. 3-wire EACV instead of 2)
they also make an ECU jumper harness that connects your OBD0 wiring to OBD1/2/2B depending on what ecu and components you choose.
throttle body and fuel rail, you want to pull from the same generation vehicle as what you get the intake from. just makes it easier to guarantee fitment.
injectors: again, almost any honda or acura injectors will work. but the OBD2 are easier to wire in because they dont need a resistor, and OBD2 injectors typically have higher flow rates than OBD1/OBD0.
i pulled my manifold, throttle body, sensors, and rail from a 90 civic EX sedan, and my injectors and connectors came from a 98 civic.
OBD1 or OBD2 would be best. most of the OBD1 still used a resistor box. OBD2 does not.
injectors can come from just about any honda or acura.
88-91 civic (OBD0)
88-93 integra (OBD0/OBD1)
92-95 civic (OBD1)
89-90 accord (OBD1)
96-00 civic (OBD2)
94-00 integra (OBD2)
93-97 accord (OBD2)
ECU is a pm6 if you have a manual (how many gears doesnt matter, si has 5 base has 4. they use the same ecu for MPFI swap)
if you want to switch to an auto, you use a PS9
you can use ANY D series MPFI manifold. (D15B7, D16Y8, D16Y7, D16A6, D16ZC, D16Z6 etc.)
OBD1 manifolds and sensors for the most part have a lot of similar plugs, but if you grab an OBD1 manifold you will want to get ALL of the pigtails just in case.
if you go OBD2, you will likely NEED all of them, as OBD2 switched to deutsch style connectors, and a couple of the plugs have a wire extra or a wire less than OBD0/OBD1. (i.E. 3-wire EACV instead of 2)
they also make an ECU jumper harness that connects your OBD0 wiring to OBD1/2/2B depending on what ecu and components you choose.
throttle body and fuel rail, you want to pull from the same generation vehicle as what you get the intake from. just makes it easier to guarantee fitment.
injectors: again, almost any honda or acura injectors will work. but the OBD2 are easier to wire in because they dont need a resistor, and OBD2 injectors typically have higher flow rates than OBD1/OBD0.
i pulled my manifold, throttle body, sensors, and rail from a 90 civic EX sedan, and my injectors and connectors came from a 98 civic.
06-22-2016, 06:49 AM
#6
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Re: parts for d15b1 mpfi swap
if anyone has any more to add or if im wrong in any detail feel free to let me know.
OBD1 or OBD2 would be best. most of the OBD1 still used a resistor box. OBD2 does not.
injectors can come from just about any honda or acura.
88-91 civic (OBD0)
88-93 integra (OBD0/OBD1)
92-95 civic (OBD1)
89-90 accord (OBD1)
96-00 civic (OBD2)
94-00 integra (OBD2)
93-97 accord (OBD2)
ECU is a pm6 if you have a manual (how many gears doesnt matter, si has 5 base has 4. they use the same ecu for MPFI swap)
if you want to switch to an auto, you use a PS9
you can use ANY D series MPFI manifold. (D15B7, D16Y8, D16Y7, D16A6, D16ZC, D16Z6 etc.)
OBD1 manifolds and sensors for the most part have a lot of similar plugs, but if you grab an OBD1 manifold you will want to get ALL of the pigtails just in case.
if you go OBD2, you will likely NEED all of them, as OBD2 switched to deutsch style connectors, and a couple of the plugs have a wire extra or a wire less than OBD0/OBD1. (i.E. 3-wire EACV instead of 2)
they also make an ECU jumper harness that connects your OBD0 wiring to OBD1/2/2B depending on what ecu and components you choose.
throttle body and fuel rail, you want to pull from the same generation vehicle as what you get the intake from. just makes it easier to guarantee fitment.
injectors: again, almost any honda or acura injectors will work. but the OBD2 are easier to wire in because they dont need a resistor, and OBD2 injectors typically have higher flow rates than OBD1/OBD0.
i pulled my manifold, throttle body, sensors, and rail from a 90 civic EX sedan, and my injectors and connectors came from a 98 civic.
OBD1 or OBD2 would be best. most of the OBD1 still used a resistor box. OBD2 does not.
injectors can come from just about any honda or acura.
88-91 civic (OBD0)
88-93 integra (OBD0/OBD1)
92-95 civic (OBD1)
89-90 accord (OBD1)
96-00 civic (OBD2)
94-00 integra (OBD2)
93-97 accord (OBD2)
ECU is a pm6 if you have a manual (how many gears doesnt matter, si has 5 base has 4. they use the same ecu for MPFI swap)
if you want to switch to an auto, you use a PS9
you can use ANY D series MPFI manifold. (D15B7, D16Y8, D16Y7, D16A6, D16ZC, D16Z6 etc.)
OBD1 manifolds and sensors for the most part have a lot of similar plugs, but if you grab an OBD1 manifold you will want to get ALL of the pigtails just in case.
if you go OBD2, you will likely NEED all of them, as OBD2 switched to deutsch style connectors, and a couple of the plugs have a wire extra or a wire less than OBD0/OBD1. (i.E. 3-wire EACV instead of 2)
they also make an ECU jumper harness that connects your OBD0 wiring to OBD1/2/2B depending on what ecu and components you choose.
throttle body and fuel rail, you want to pull from the same generation vehicle as what you get the intake from. just makes it easier to guarantee fitment.
injectors: again, almost any honda or acura injectors will work. but the OBD2 are easier to wire in because they dont need a resistor, and OBD2 injectors typically have higher flow rates than OBD1/OBD0.
i pulled my manifold, throttle body, sensors, and rail from a 90 civic EX sedan, and my injectors and connectors came from a 98 civic.
06-22-2016, 11:15 AM
#7
Honda-Tech Member
Re: parts for d15b1 mpfi swap
In what way am I wrong? Every single OBD1 vehicle I have looked at has had a resistor box. And the injectors run 10-12 Ohms. OBD2 cars do not have a resistor and the injectors run 12-16 ohms. Only thing I'm seeing different than I already posted was the flow rate. I just looked them up and except for the DPFI, the flow rates only vary 20-25cc.
The relation between injectors and OBD is based on resistance. There are low impedance and high impedance injectors. Low impedance, which are ond0 and SOME OBD1, have the potential to fry an injector circuit in an ecu if run without a resistor. Obd2 are all high impedance and do not run that risk.
The relation between injectors and OBD is based on resistance. There are low impedance and high impedance injectors. Low impedance, which are ond0 and SOME OBD1, have the potential to fry an injector circuit in an ecu if run without a resistor. Obd2 are all high impedance and do not run that risk.
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06-22-2016, 06:17 PM
#8
Re: parts for d15b1 mpfi swap
every single 92+ civic is not using a resistor box, 94+ integras do not use them either.
it has NOTHING to do with OBD, it has to do with what injector drivers they are using in the ecu. you must have only looked at accords and preludes and not many of them. saturate and peak and hold injectors operate differently and it is best to match the ecu to the injector type it requires.
it has NOTHING to do with OBD, it has to do with what injector drivers they are using in the ecu. you must have only looked at accords and preludes and not many of them. saturate and peak and hold injectors operate differently and it is best to match the ecu to the injector type it requires.
06-22-2016, 07:39 PM
#10
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Re: parts for d15b1 mpfi swap
Thank you "v4lu3s" good to see you're still on here. Worth mentioning is up to 1991 is pre-OBD (OBD0 as it is referred to) and 92-95 is OBD1. 96+ is OBD2 with the "b" variant beginning somewhere around 98. I can elaborate further if you need even more explanation as to why the info you're providing is incorrect and can lead to someone obtaining the wrong injector based on your post.
06-23-2016, 12:55 AM
#11
Honda-Tech Member
Re: parts for d15b1 mpfi swap
but thats the thing. there really is no "wrong" injector. if you pull injectors from a car with a resistor, simply grab the resistor. if you pull injectors from a car without an injector resistor, then double check to make sure it hasnt been cut from the harness and if the harness isnt hacked up, then no resistor.
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