I have a b16a swap goin in my dx, ive looked all over but either i get no results or too many results without the real answer im lookin for, when i swap the car over from dpfi to mpfi, it says to make the wire swap at the tps (green to yellow and visea versa) do i still need to do this on the b16 swap....thats all i need to know...thanks guys??

 

Yes,definantly..
the DX tps works in the opposite direction..

Also make sure you wire your 02 sensors like this:
http://img14.exs.cx/img14/1852/ps10.jpg

 

Yes.

Damn! Beaten again!

 

I pitty the fool that beats dr. disco!

 

 

I have actually been doing these swaps for over 5 years, and initially when I first began doing them I never switched the wires. This was in a time when Hasport, and whoever else didn't broadcast how to do it. Several of those cars who received my wiring years ago still run just fine. I have seen no evidence ever of idle trouble or throttle issues much less engine lights. I do switch the outer wires these days just because everyone and their mother says so, and my luck one of them will take my harness apart and flip out because I didn't switch them. In my experience these do not have to be switched...surprising yes, but in my experience (which is probably upward of 50+ conversions) switching them or not had no effect. Given how easy this is to do though and the fact that you should have had to extend the TPS anyway, switching them shouldn't be a big deal.

 

if you dont switch the wires the tps will read 4.8 at closed throttle, and .5 at WOT. thats the opposite of what you want to see. I just recently swaped the wires and felt a diffrence(no more popping from exhaust when i let off gas) and alot better gas mileage. just my experiance.
manny

 

bitchin, thanks fer the info guys, hey is there anyone out there that might already have a 90-91 dx harness already made for my b16 swap...or know of anyone that does them for a decent price, a local shop out here will charge me $200 canadian just on labour

 

by the way i have the original b16 harness and a resistor box, just need someone to mod it to a dx harness that i do not have (i have one in my car just dont want to yank it out....i need my car to go to work)because im trying to get almost all my stuff done so i can just drop it in and connect wires

 

bump

 

bump bump bump again!!!

 

I did it all at once..The B16 install and the MPFI conversion..

I had the wiring done for the most part before
I even pulled the old engine because like you,
I did not want to be without my car..

All the links you would need to do it yourself are posted
in the FAQ section at the top of this forum..

PS>I did see a DX harness F/S the other day..
If I see the link,I will drop you a PM..

 

Holy ****, I just encountered this problem a couple months ago and I couldn't find any definite info about it online. I had the swap for over 3 years and it ran great. I would experience a brief hesitation if I suddenly went from closed throttle to full throttle, but that was it. Then we put a blower on it and installed datalogging and saw that it was reading backwards voltages. We switched the wires and everything worked fine, but I was really confused about why they were "backwards" in the first place. Thanks for the clarification. I bet there are TONS of people out there who never switched their wires.

 

is this just in the dx harness, or should i have switched the wires when i switched to the z6 and obdI in my 89 si? just wondering. thanks.

 

This is just for the DX model..

 

On h-t, Droppedcrxsi and I (nikitad) make this kind of harnesses.
We are separate entities, so - pick who you're dealing with and go with him.

Of course my harnesses are better. (this is a shameless plug and should not be solely relied upon in making your choice )

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by nikitad &raquo;</TD></TR><TR><TD CLASS="quote">On h-t, Droppedcrxsi and I (nikitad) make this kind of harnesses.
We are separate entities, so - pick who you're dealing with and go with him.

Of course my harnesses are better. (this is a shameless plug and should not be solely relied upon in making your choice ) </TD></TR></TABLE>

HAHAHA.

YA, switch for dx only.
Ryan

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by mannyman &raquo;</TD></TR><TR><TD CLASS="quote">if you dont switch the wires the tps will read 4.8 at closed throttle, and .5 at WOT. thats the opposite of what you want to see. I just recently swaped the wires and felt a diffrence(no more popping from exhaust when i let off gas) and alot better gas mileage. just my experiance.
manny</TD></TR></TABLE>

This is EXACTLY what i have!!

My exhaust backfires, my car should be making more power and my gasmileage isnt so good. Could this be it? I was baffled when i read the multimeter.

88CRXDX???

 

well to either of you who make the harnesses, would you be up for a trade of a brand new skunk 2 sohc adjustable cam gear, or part trade and part cash....its never been used so if u want pics or ur interested email me @ jeff_f150@hotmail.com

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by HamiltonRex &raquo;</TD></TR><TR><TD CLASS="quote">This is EXACTLY what i have!!

My exhaust backfires, my car should be making more power and my gasmileage isnt so good. Could this be it? I was baffled when i read the multimeter.

88CRXDX???</TD></TR></TABLE>

Just de pin and swap, def worth a try!!

PS, thanks for the vouch
Ryan

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by RC000E &raquo;</TD></TR><TR><TD CLASS="quote">I have actually been doing these swaps for over 5 years, and initially when I first began doing them I never switched the wires. This was in a time when Hasport, and whoever else didn't broadcast how to do it. Several of those cars who received my wiring years ago still run just fine. I have seen no evidence ever of idle trouble or throttle issues much less engine lights. I do switch the outer wires these days just because everyone and their mother says so, and my luck one of them will take my harness apart and flip out because I didn't switch them. In my experience these do not have to be switched...surprising yes, but in my experience (which is probably upward of 50+ conversions) switching them or not had no effect. Given how easy this is to do though and the fact that you should have had to extend the TPS anyway, switching them shouldn't be a big deal.</TD></TR></TABLE>

i am thinking the same thing, i know of 4 dx swaps i have done i didnt. but i will put that in the back of my head and swap them from here on out.

 

No one interested in my cam gear offer
the thing is still in the box

 

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

This is EXACTLY what i have!!

My exhaust backfires, my car should be making more power and my gasmileage isnt so good. Could this be it? I was baffled when i read the multimeter.

88CRXDX???</TD></TR></TABLE>

only way to know if you need to switch the wires is to check the volts in the middle wire leading into your tps. With the key switched on, the volts should be at or near .5 volt. Now if you are seeing 4.8 or 5.0 volts with the butterfly CLOSED, then the two outer wires in the tps plug need to be switched. Simple as that guys.
manny

 

hi ive just don a dpfi to mpfi swap and my tps sensor has 2 prongs on the inside and the mpfi sensor has 3 prongs...do i switch the plug or what...i dont know what to do please help.....thanx

 

switch the 2 outside wires, the middle stays.

Just depin, super easy. Took me 3 seconds with a pocket knife.