new swap time, it's about to get real big up in here

[almostJDM]

They make complete RB25 harnesses?, also I don't want to have to pay several $100 just to get a tune to make the engine run stock, that's just stupid right there, but if they have maps you can download and put onto it, then it may be worth it, I'll have to look into what they have.

but about the harness, I would just feel better in the long run using new wire, but the stock harness will be fine for the meantime, theirs a few connectors I still have to figure out what they are, and theirs 2 wires without a connector that I need to find on the wiring diagram

[almostJDM]

well guys looks like no actual work on the car will get done this week, because we are getting hit buy a snow storm, so that will leave me more time to work on the harness, I am going to try and get down there next week now.

Toycar, I am going to hold off on any engine management stuff right now, but if I can't get the car to fire up and run on the factory ecu, then I will look into megasquirt, or something else.

[deevergote]

Snow? WTF? It's April!
It was 80 degrees today in NJ. I was sweating like a fat kid playing Nintendo!

[almostJDM]

yeah I know right, yesterday it was 68 and sunny lol

[honda2014]

You have to make sure this thing is faster than an H22 swap.

[toycar]

Never wired a car up on a standalone I take it? Its a lot easier than you'd prolly think. Basically you run the engine on crank angle, cam position and airflow sensors. You can turn basically everything else off. I'm being general here, typing on my phone sucks balls. Basically just make new harness to run everything. If you can convert one harness to another, you can wire up a built mega squirt unit.


Ghost built how own and saved a couple hundred bux. Either way, for the cost of your harness you mentioned earlier, you can easily run a stand alone setup and the wiring is 100x easier and fairly self explanatory. I'm sure you can find a baseman for an rb25 online. For sure. Then you'd be able to tune as well

[almostJDM]

the wiring isn't the issue, I just don't want to spend any money on and ecu just yet unless I need to in order for the enign eot even run, then i will, and I have wired up quite a few stand alone ecu's before though, plus if I delete a bunch of stuff like emissions equipment, then I wont be able to drive the car on the streets in AZ when I move down well i should say it wont pass inspection, that is the main reason I want to get the car running on the facotry ecu, and honda2014 it wont be right off the bat, or if it is, it will barely be faster then one

[toycar]

I dunno, don't delete the emissions stuff then?



The thing is, a standalone setup is going to give you some very clear directions like "Pin 3 +5 for map sensor" or whatever. Very clear instructions for wiring, and then you can just fab your own harness. Wiring MS varies from chassis to chassis but the instructions are just about always extremely clear.


My opinion only here, but why not kill two birds with one stone? Also, wiring will be easier than trying to mate the cb and rb harnesses.



My thougts anyways. I don't really even see how you are going to run the iginition system off of the cb harness w/out basically fabbing half the new shit anyways.


What parts are you stuck on? Can the community help you? I'd do some homework to help out if you needed, and Im sure others would as well.

[almostJDM]

The only part that I am currently stuck on for the wiring is finding out what these pink and black wires go to, they don't have the connector anymore but its a 2 pin connector, I just stumbled upon a wiring guide from wiring specialties, and also a thread where someone asked about some of the connectors I was looking for.



Also, I may take your advise on doing a stand alone, even though the only reason it would be easier to wire is if each wire on the new harness was labeled, other then that its exactly the same, and I have been looking at MS, and I think I may go that route, but the part I don't like is I literally have to solder in every resistor, transistor, capacitor, and diode, because I don't trust someone else's handy work, and I'd like to save $200+ rather then spending it on a preassembled ecu, now I just need to find all the wiring since the only stuff they sell is pretty much half the wiring, and I'd like to get all new wires, instead of half new half brittle, so I guess right now I will get to work tearing apart the harness right now, since I have all the connectors labeled I don't have to worry about what goes where.
Or maybe I will wait a little bit on that, and I will get all the wires from the chassis harness found, but I may still get an all new harness from chase bays, because of the fact that all the wires are labeled where they are all bunched up ready to be wired all in one spot, and it would make it even easier to wire, then with just the stand alone, and a total of just tad over $1000 its not bad for all brand new wiring and ecu, the only thing I would have to do then is wire the ecu into the chassis harness, plus it would get ride of some headaches from the old wiring.

[toycar]

I've never fully assembled a ms system, always bought mine fr this guy Scott I know for about $400 complete.

Wiring is easier since you can label everything and start over from square one. I was wondering how you planned on running the ignition system on an accord harness, without having to deal with a whole bunch of bullshit anyways.

[almostJDM]

That, I am still looking into, I will steadily look into my options as I build the car, and hopefully I will have a definite answer when the time comes to wire it up.

[toycar]

There is a lot of extensive wiring info on bmw forums and 240 forums for the rb25. I would dive head first into that if it were me. There was an rb powered e30 that ran on MS back in '09-'10 around here. I know it can be done. My buddy has a 240 that is rb swapped too, also running MS.

best of luck.

Are you going to keep it wasted spark or go COP?? Just curious.

[almostJDM]

cool, thanks, I will have to look into that, and I will probably ditch the wasted spark system and get a set of spitfire units, or something similar, even though technically my RB is already cop, but the ignitor is external, the coils are on the plugs, but yeah.

[AAPOQ]

I wish I had deep enough pockets to make an AWD cb7

[toycar]

cool, thanks, I will have to look into that, and I will probably ditch the wasted spark system and get a set of spitfire units, or something similar, even though technically my RB is already cop, but the ignitor is external, the coils are on the plugs, but yeah.

Its still a wasted spark setup because of the way the ignition is triggered.


I would go genuine COP if it were me.

But, the sky is really the limit here. I suppose if it were me I would be focused on getting it running first too.