alright so i traded a crx i had built for a hatch about a week ago... got bored with the crx... got this hatch and it is SLOW ... so i was wondering what is the easest way to do mpi swap on this thing? and what are all the parts that i need to do it.. also i wanted to know after i convert it to mpi.. can i use b18 injectors... and will that make a diffrence

 

have the same questions!!

 

FAQ's will tell you a lot of the info you are asking about

DPFI-MPFI swap information

*DX,STD (DPFI) -> Si,HX (MPFI) wiring

 

Yep, it's covered in the FAQ. And to be quite honest, there is no easiest way really to go about doing it. Well, I guess the FAQ way is the easiest. Also, the injectors won't make a difference. There are only a couple of different models that don't flow at 235-240. Search for it.

 

dpi to mpfi is barly worth it.. id just get a d16 for the trouble and money. Itd be about the same.

 

if you don't know what you're talking about, please don't post. switching to mpfi is one of the best upgrades you can do to a dpfi car. not only does it give better fuel and air delivery to the motor, but it is the base for any future motor swaps. pretty much any swap worth doing is a mpfi swap.

which brings me to my second correction. the d16 is a mpfi motor. therefore your suggestion about just switching to a d16 would require the dpfi-mpfi conversion, which you said was "barely worth it". anyone who would want to get a d16, and then switch everything over from mpfi to dpfi needs to be punched in the genitals.

 

PWNED!

 

Spanked and then some.
I think what he meant was that he would go with a D16 and of course go MPFI instead of just going MPFI alone.

 

By the time you get all the stuff for the swap your gunna be lookin as much as another d16. you might pull out cheaper if your making your own wire harness. But if you knew how to do that would you even have made this post? Im just saying if you go to a yard and find a d16 you could pull the head injectors,intake, tb, reg box, dizzy and rail, and the new ecu along with all the wiring and you wouldnt have to go and make your own cuz youd have the new wiring youd just have to refed it. Dont say i dont know what im talking about, im just trying to help you and you get pissed. sorry if you didnt get any last night...

But like i said idk what you have for all i know you know how to make all the stuff and have some of the pieces already, i simply give a opinion and you go about saying i dont know what im talking about. Thats just what I would do.

 

Yah i was but screw this kid.

 

i will say you don't know what you're talking about because your last post proved it even further.

it wasn't the op that made the post, I did, and if you would get your head out of your a$$ you would have seen this. if you were talking about getting a d16 AND doing mpfi, maybe you should specified that a little clearer instead of saying "mpfi is worthless, get a d16."

also going back to not knowing what you are talking about, you can not simply get a d16 harness and put it on a dpfi car. the dpfi engine and chassis harness need to be modified to mpfi. a stock mpfi harness will not match up, both in connectors or sending the corrcect signal from the ecu to the sensors requiring the signals.

oh and btw junior, i did get some last night. tell your mom i left the change on the dresser.

 

You pull all the wiring harness from whatever your pulling the other stuff from and you can. they fit its just wires. its just a lil more pain. and duh i was talking about doing a d16 with mpfi swap... im just saying.

But i can already tell im not gunna win this one because your obv someone thats always right.

Goodday sir.

 

so pull out every bit of wiring from under the dash in 2 different cars then replace the under dash harness with the mpfi harness so it will match the mpfi engine harness that will need to be swapped out OR add a few wires to the existing harness without removing the entire under dash harness of either car and achieve the same results. hmmmmmm, I wonder which I would choose.

 

Ive done many mp swaps... pretty simple just get obd0 si intake mani, dizzy, injector resistor box and pm6 ecu
You cut up your dx harness and make a si one out of that...
heres the best link ive found and have always follow with no problems
http://hondacrx881.tripod.com/mpfiswap.html
good luck and take ur time :D itll be well worth it down the road
trust me...

 

This is so much more work than just adding the needed wiring. Why in the world would you pull the head for this conversion? You just added the cost of another head gasket on top of everything else, not to mention it's not necessary to swap heads at all. Even so, what you end up with is still the same, a 1.5block with a MPFI conversion. Swapping the cam from an A6 would be ideal but you don't need to swap the head.



Get a D16 as in get an entire motor? The person wasn't looking to swap, the person was looking to convert. And even if you swapped, you'd still need to convert. That defeats the point of "dpi to mpfi is barly worth it"...and it's barEly not barly

 

Yep you guys are all right, so smart. lol. Im done here. When i was going to do a mp swap it came out only about 100 bucks more then doing the way everyone else does it. Sorry when i do it i like to have my clean with no cuts in the wires and stuff.

But like i said you guys are all right.

And btw some d15 heads dont have coolant to go through the mpfi tb and can burn out the tb. Idk what head it is but sorry to tell you i know this i work around junkyards a lot and see it happen all the time.

But like i said you guys are freakin smart as hell. Have fun.

 

I'm not saying either way is wrong or right, I'm saying that your way is more work. Now if there is a difference in the head, please enlighten everyone...otherwise your point is invalid.

 

Taken from...https://honda-tech.com/forums/honda-crx-ef-civic-1988-1991-3/my-88-hb-dx-swapping-2682935/

Just from reading through that thread, which was only from just about 4 months ago, I would NEVER take anything you say seriously because it is OBVIOUS you do NOT know what you're talking about.

 

it's not about being right or wrong, both ways can and do end up with the same results, however, there is an easy way and a hard way to do things. the way I described was the easier of the two ways being presented, and in the end will yield the same results. you even admitted it yourself, you ended up spending an extra $100 to get nothing different except a cam, plus you did a lot more work. I can get an Si cam for less than $100. plus when doing a head swap, you have the extra work of setting timing, getting the head resurfaced (anyone who buys a used head and doesn't get it at least resurfaced is asking for problems), not to mention all the extra work of pulling off the old head, cleaning the surface, reinstalling, ect.

and since when do you cut wires to do a dpfi - mpfi? last i checked all's that was need was de-pinning and re-pinning a couple of wires and then adding a couple extra wires, no cutting necessary.

so yes, in the end, would both ways work. but tell me this would you remove your intake manifold to change a throttle body gasket??? no. so like i said before, there is an easy way to do things as well as the hard way.

 

Burn out the throttle body??? HAHAHAHAHA!!

Aluminum melting Coolant FTW!