Nicram

I am droping the b18c5 into my vic, dude has the p73 ecu but from my posting i found out chipped p28 will be better. Should i just get this

http://cgi.ebay.com/ebaymotors...%3A17

and pay mu electronics dude 60 to put it in and I am set?? Or is there a better option??


Modified by Nicram at 1:40 PM 11/10/2005

nota-eg

Use the correct ECU. GSR motors have secondary runners that can't be controlled by a P28 ECU, chipped or not.

Nicram

its a type r motor with type r ecu. Anyone else?? Because I just got confused.

duggy

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by nota-eg &raquo;</TD></TR><TR><TD CLASS="quote">Use the correct ECU. GSR motors have secondary runners that can't be controlled by a P28 ECU, chipped or not.</TD></TR></TABLE>

There's always a way around that.

Nicram

So what chip the p73?? and just get the obd2 to obd1 harness??

randys

p28 doesnt read the nocksensor. couldnt you use a p72?

Nicram

Someone told me that it is good if you do not read the knock sensor

flashdance

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by randys &raquo;</TD></TR><TR><TD CLASS="quote">p28 doesnt read the nocksensor. couldnt you use a p72?</TD></TR></TABLE>

When chipping the ECU it can do whatever you want it too.. A chipped and programed P28 will do whatever a ITR ecu, GSR, B16, Erick's racing chip etc can do.

Nicram

My old post where I learned all that
https://honda-tech.com/zerothread?id=1377201

But now you guys just confused the .... out of me

randys

p28 will not read knock unless you add the knock board to it. by the time you did that you wouldve been better off buying a p72.

Nicram

So now i am in a same point as I was few moths ago. soooooo you are saying just get the obd conversion and leave the ECU??

randys

if you already have the p73, then that would be the easiest and cheapest thing to do. thats my opinion anyway.

Nicram

I thought that with this set-up i leave the harnes, chip the ecu, get obd1 Dizzy and I am done. But now...... back to point a and either swapping entire harness or playing with conversion harnesses. the obd2 dizzy will need the conversion too? I mean it will not work on the obd1 harness right?

Nicram

and..... the answer is......

randys

i think they make a harness that will go from an obd1 harness to an obd2b ecu. so if you wired the obd2 distibutor to the obd1 harness that would work. i think??? hell i dont. this **** is getting cofusing!!!!

Nicram

Best for me ( less work ) would be the chipped p28 but now you guys said no no !! So.....

randys

p28 will run it just as good as the p72or p73. i geuss unless you were boosting you wouldnt really need a knock sensor.

Nicram

I need to be sure, i will be guessing my quarter mile time, but not this. Please!!! I need to be 100%

Nicram

I am still waiting......

Luserkid

Use a P73 (Type R ecu) until you build the motor then chip it. No reason to chip the ecu on a stock motor.

/thread.

Nicram

Okay the circle is closing i see because ... how can I build up a ITR motor?? I am so lost right now........ damn!!!

Relic1

In your other post you stated that you have a 94 hatch, stick with OBD1. trying to convert to OBD2 to run the P73 would be a huge pain. And emissions in IL doesn't care, as long as you pass the sniffer test. (especially if you're lowered &gt;2")

I would stay away from that chip on Ebay, it will probibly run rich and you will have predet under heavy load around 3k.

As far as the ECU, either pick up a P28, P30 or P72.
the P28 is the basic tuner ECU, simple and can be found anywhere.
the P30 is a step up with the knock sensor.
the P72 is the 'fully loaded' version with knock sensor and IAB control.
Since you do not have a GSR intake manifold you don't care about the IAB control in the P72.
Any of the three ECUs will work with a 'chip'. Personally I use a P30 on my C5 since it works with all of the tuning programs out there and I can use the knock sensor if I want to.

as far as wiring up the swap, as long as you get the USDM ITR you can connect the ITRs engine harness to your chassis harness at the shock towers, move around two or three wires, add two or three to the ECU and the wiring will be done.

**edit** you have a mini-me so the wires are all ready run to the ECU.
which ECU are you using to control the mini-me setup???

what do you mean build up an ITR motor?

Nicram

Thanks for the nice answer Relic1 !!!


OK here we go:

Currently I am runing the EX ecu ( if I am not mistaken is the p28 )

I mean build up ITR motor?? I mean I am just spending $3,500 on a swap and I am not even sure what there is to build up. I am puting on it the fidanza fly with exedy clutch, better fuel pump and all the other regular stuff, I also have the VAFC ( if it matters ). Everywhere I see people are upgrading to better cams which most of the time are the type r cams etc.

But back to the ECU part.... Can i just run the p73 and get the conversion harness and run dizzy on obd1? does my harness have the wiring for the knock sensor? and he he what does exactly the knock sensor do...?? ( noob question, search is down ) I know it detect the frequencies, and the knock??


Modified by Nicram at 8:42 AM 11/11/2005


Modified by Nicram at 8:43 AM 11/11/2005

Relic1

you mean add to the ITR motor for more power?
good question, I'm at the same point with mine. Header, catback, clutch, flywheel, cams, raise compression and tuning are the main things I can think of. (most important is the last one)
read a lot in the ITR forum for ideas.


You all ready have a P28(EX ECU) why not run with that? No need for the knock sensor that way. Drop in a chip or even a program like Uberdata or Crome and you will run fine.
running the P73 will require running several wires to sensors that you do not have. (fuel tank pressure was the one that stopped me from doing it)

Nicram

I was going to run the p28 but someone in this post said that it is the wrong idea because :
"GSR motors have secondary runners that can't be controlled by a P28 ECU, chipped or not. "

Hell i do not know what it means I am just trying to gather all i can before the swap so later on i will not be spending a lot of time on and under the car. IHE, fly, fuel pump, VAFC and I was thinking the ECU.

So just chip the P28?? Not the ebay chip? How about this one :
http://cgi.ebay.com/ebaymotors...ZWDVW

however i see that the VTEC engagement point on this one is at 4200!!! From what I was reading that low of the engagement point will cause loss of power.

Dang guys!! Help!