mpfi worth all the headaches ?

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Old Dec 13, 2006 | 10:39 AM
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Default mpfi worth all the headaches ?

im not talking about the performance. im talking about all the problems that people face after it. i usally see about 1-2 threads every other week about how someone had a problem and threw codes. i mean im doing mpfi but im kind of questioning if i should do it or not because my car is a DD and i cant afford to spend time and money behind it if **** starts going wrong with it. What do you guys is the biggest problem? Wiring? Defective parts? Not following directions properly? I just want to clear up everything before i jump into this. and is true that it causes problems later because a d15b2 and d16a6 have different cams? thanks for your input.
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Old Dec 13, 2006 | 10:44 AM
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Default Re: mpfi worth all the headaches ? (4g4d)

absolutely worth it, i did a few myself and never had any issues, just follow the instructions carefully and be very particular.
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Old Dec 13, 2006 | 10:47 AM
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Default Re: mpfi worth all the headaches ? (Ash J. Williams)

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Ash J. Williams &raquo;</TD></TR><TR><TD CLASS="quote">absolutely worth it, i did a few myself and never had any issues, just follow the instructions carefully and be very particular.</TD></TR></TABLE>

what do you have to perticular about? i know for sure the wiring but what else? im using the factory SI harness so it shouldnt be too bad. im going to solder and heatshrink everything so what else should i look out for?
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Old Dec 13, 2006 | 11:47 AM
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Default Re: mpfi worth all the headaches ? (Ash J. Williams)

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Ash J. Williams &raquo;</TD></TR><TR><TD CLASS="quote">absolutely worth it, i did a few myself and never had any issues, just follow the instructions carefully and be very particular.</TD></TR></TABLE> No codes here during my MPFI swap Now my OBD-1 conversion in the FAQ...well only one code and I blame that one on Honda in his grave

Remember, the key to making any wiring changes. Reference 3 times, cut once; also, only connect one wire at a time and reference your manual again, if it checks out, move on to the next wire.
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Old Dec 13, 2006 | 12:49 PM
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Default Re: mpfi worth all the headaches ? (dr_latino999)

i dont know if this a rumor or not but some people say that since the d15b2 and d16a6 have different cams, the car will idle wierd and run shitty at times? true?
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Old Dec 13, 2006 | 01:07 PM
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Default Re: mpfi worth all the headaches ? (4g4d)

since u have an si harness already i would just head to the junkyard and find the corresponding car hb si or crx si of the same year as ur car and just change out the under dash harness and interrior harness if u dont want to worry about messing anything up. either that or just modify ur existing dx harness. cuz ive done 2 swaps and ive never used the si harness i just modified my dx harness.
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Old Dec 13, 2006 | 01:13 PM
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Default Re: mpfi worth all the headaches ? (crx_si-r)

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by crx_si-r &raquo;</TD></TR><TR><TD CLASS="quote">since u have an si harness already i would just head to the junkyard and find the corresponding car hb si or crx si of the same year as ur car and just change out the under dash harness and interrior harness if u dont want to worry about messing anything up. either that or just modify ur existing dx harness. cuz ive done 2 swaps and ive never used the si harness i just modified my dx harness.</TD></TR></TABLE>

i plan on modifying the dx harness. that would be too much work to use the si harness but im going to snag whatever i need off the si harness.

one other thing once i do the mpfi swap, if i decide to put an a6 cam on the d15b2, would it make any difference? [
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Old Dec 13, 2006 | 01:34 PM
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Default Re: mpfi worth all the headaches ? (4g4d)

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by 4g4d &raquo;</TD></TR><TR><TD CLASS="quote">

one other thing once i do the mpfi swap, if i decide to put an a6 cam on the d15b2, would it make any difference? [ </TD></TR></TABLE>

i would like to know too.
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Old Dec 13, 2006 | 02:05 PM
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Default Re: mpfi worth all the headaches ? (JKGONZALEZ3)

i think the only problem you could run in to mechanically is the distributor .. cuz i know mine was messed up and had to buy a junk yard one for 75 bucks.. but other then that not much can go wrong.. mine doesnt idle weird at all. well once and a wile it idles high but only 1000 rpm.. but eventually goes down.. and im not talking about cold idle. as for the a6 cam... id ont know if it would make a difference but its alot of work for maybe 2or 3 more hp.. if you plan on swapping in a different motor dont worry about it but if you plan on keeping your d15 then go ahead and get the cam.. or better yet get a whole a6 head. would probably be easier that way. and if you wanted get the a6 head rebuilt before putting it on. thats what id do
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Old Dec 13, 2006 | 03:06 PM
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Default Re: mpfi worth all the headaches ? (janz3n)

i think i might do a fresh a6 head later on but for now im just going to stay with the b2 head. its my daily but later it will be the project car and get me another beater.
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Old Dec 13, 2006 | 03:15 PM
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mpfi is like night and day its a big difference. Just when you do your wiring take your time with it and make sure everything is right before you tape it all up. Find yourself a testlight that has a small tip and use it for your depinning tool. I cant rember were i got it from but i got an eyeglass screw driver that was somewhat long and it works like a dream good luck
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Old Dec 13, 2006 | 03:19 PM
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Default Re: (h224thgensedan)

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by h224thgensedan &raquo;</TD></TR><TR><TD CLASS="quote">mpfi is like night and day its a big difference. Just when you do your wiring take your time with it and make sure everything is right before you tape it all up. Find yourself a testlight that has a small tip and use it for your depinning tool. I cant rember were i got it from but i got an eyeglass screw driver that was somewhat long and it works like a dream good luck</TD></TR></TABLE>

yeah i have a whole kit for the eyeglass repair kits and im using that for sure. were can i get some wire loom at? any auto parts store? and one other thing, i was at radioshack and they had the cold heat soldering iron i was wondering if that actually works?

also were can i get the manifold hottanked at? i want to make sure that bish is clean before everything goes on.
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Old Dec 13, 2006 | 03:22 PM
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never tried one of them but yea as for the loom any auto parts store has it and get some shrink wrap as well
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Old Dec 13, 2006 | 03:28 PM
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Default Re: (h224thgensedan)

i work at an autoparts store and that cold iron isnt worth it. i tried it and never used it again. as for wire loom i bought 50' for about $20 shipped off of ebay, i had enough to re-loom my entire car and my buddies car n still have some left over.
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Old Dec 13, 2006 | 03:29 PM
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Default Re: (h224thgensedan)

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by h224thgensedan &raquo;</TD></TR><TR><TD CLASS="quote">never tried one of them but yea as for the loom any auto parts store has it and get some shrink wrap as well </TD></TR></TABLE>

im heatshrinking all the wires. like i said i want to make sure its done right the first time. how much wire should i get to extend with ?
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Old Dec 13, 2006 | 03:45 PM
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Just get yourself a roll of 30ft that should do it
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Old Dec 13, 2006 | 03:55 PM
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Default Re: (h224thgensedan)

cold heat sucks!, its mainly for soldering jewlery together.. trust me i had it , it sucks ***. wire loom? thats what electrical tape is for ! lol.. but ya if you do it right heat shrink wire loom and solder everything.
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Old Dec 13, 2006 | 04:03 PM
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dpfi is dinosaur **** if you dont have mpfi you might as well not even mod your car.
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Old Dec 13, 2006 | 04:15 PM
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Default Re: (janz3n)

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by janz3n &raquo;</TD></TR><TR><TD CLASS="quote">cold heat sucks!, its mainly for soldering jewlery together.. trust me i had it , it sucks ***. wire loom? thats what electrical tape is for ! lol.. but ya if you do it right heat shrink wire loom and solder everything.</TD></TR></TABLE>

thanks for saving me $20 . im going to get one of those cordless butance soldering gun to make it easier.

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by 775rex89si &raquo;</TD></TR><TR><TD CLASS="quote">dpfi is dinosaur **** if you dont have mpfi you might as well not even mod your car.</TD></TR></TABLE>

i havent really modded my dpfi. it just has a intake and thats it.
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Old Dec 13, 2006 | 05:32 PM
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Default Re: (4g4d)

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by 4g4d &raquo;</TD></TR><TR><TD CLASS="quote">i havent really modded my dpfi. it just has a intake and thats it. </TD></TR></TABLE> That's a mod O-Ring scribers make great depinners. The only difference between the two heads, A6 and B2 mechanically is the cam. Now without the A6 cam, think of your motor as somewhere between the power ratings of D15B7 and a straight A6.
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Old Dec 13, 2006 | 06:40 PM
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Default Re: (dr_latino999)

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by dr_latino999 &raquo;</TD></TR><TR><TD CLASS="quote"> That's a mod O-Ring scribers make great depinners. The only difference between the two heads, A6 and B2 mechanically is the cam. Now without the A6 cam, think of your motor as somewhere between the power ratings of D15B7 and a straight A6.</TD></TR></TABLE>

what does this said o-ring scriber look like ? so about 105 to the crank? maybe? hofefully?
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Old Dec 13, 2006 | 06:59 PM
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Default Re: (4g4d)

those soldering guns that actuallly look like a gun and have a trigger are the only ones iv seen and used that worked good.. those stick ones suck ***. never heard of any wireless soldering gun other then cold heat.. but im glad i can help you not waste 20 bucks.
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Old Dec 13, 2006 | 07:17 PM
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Default Re: (janz3n)

Pssh, I love the stick ones, they teach me to be very aware of my surroundings
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Old Dec 13, 2006 | 08:49 PM
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im doing this soon and im nervous as well, i got my parts at the junkyard two days ago off a clean car but im worried about the wiring
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Old Dec 13, 2006 | 09:28 PM
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Default Re: (88EF9)

if you take your time and follow the directions, it will all work out....and trust me, don't be lazy, solder and heatshrink every single connection, and minimize the number of connections, because if you don't, i garuntee you'll have problems, just do it right the first time and everything will work
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