It was your thread that convinced me to re-do this area.
As you can see...it has been an ongoing process. My bay tuck started almost 3 years ago...and the colors of parts has changed as well.

the long term stretch goal would be to tuck the alternator harness and brake lines but i think the ship has sailed on those.

As for when tending to other maint...no joke. The cosworth makes spark plugs/coil packs a breeze. The wire tuck make things nicer too..you can get your hand in so many more places and see so many more things. Nissan used a ton of brackets and that ribbed plastic adds so much bulk.

:icon38: You have got that right. Too bad Nissan didn't set our engines up this clean, they would have saved a decent amount of money on wire and bracket if they spend a little more time R&D on the harness. At least they left something for us to mod though...lmao.

Sweet, I had missed this post when i made the previous. This is what I had seen from Honda forums in the past, that all wire could be pruned back. But now with our drive by wire and issues with TB relearn I felt that I should not disturb any of the circuits until i knew exactly what would not be effected. Plus if i am going to shorted the wire I would prefer not to splice but terminate at the pigtail. I have been looking for pins and have found a couple of possibilities to get them from, just haven't pulled the trigger yet.
The next plan I have when I do go back in to start pruning again is to upgrade ground wires and rebuild the coil harness. I found 2 wires with cracked insulation that I repaired.
Another thought that i have had is to install a grommet above the transmission and pull all the 02/crank sensor/transmission wire straight up through under the dash. This would reroute nearly 20 wires away from the back of the engine and behind the false firewall.
I am loving your progress and is making me want to go back in again:thumbup:

stop...just stop. I dont need any more ideas! lol

*oem calibration would be the three peddle setups with the ignition key. Not a value that i know. Haltech just calibrates on full open and full close and maps it.

Yeah I ran all my widebands up through the shifter area. Would be nice to run the transmission wiring the same (starer sol, o2 sensors, two tranny and crank pos sensor). I have those wires separated out as well.

I rebuilt the injector harness but left too much length in them. Could trim 6 more inches from each injector.

As for the splicing vs new pins. I looked up the pins and could get them in rolls of 1000. Only need the female pins...i have not found a way to de-pin the male connectors without destroying it. I hooksplice, solder and heat shrink. I dont see any issue with it. I also offset my splices since it does add bulk to the diameter. My next post will show you what i mean.

A bit more progress:

So i had mentioned some of the relocated parts. Here they are:

EGR valve is on the right, the dark blue connector is coolant temp
Attachment 392527

Boost control valve mounted off a plate that is mounted off the rear coolant pipe
Attachment 392528
Attachment 392529

Vibrant vacuum distribution block with AEM sensor installed (shortened up a ton of VAC hose)
Attachment 392530


All three:
Attachment 392531

It is a tight area and a real SOB to get it in there. But once installed, these parts are not really serviced.

Heat Shrunk wire Splices. Offset the splice locations to minimize buildup of diameter. Did 6 wires at a time Got 4 to go, in two twisted pairs (most likely maf and AIT)
Attachment 392532
Attachment 392533

I left a few inches of extra wire so i can service and do my final tucking. I have room in the battery box area to stow them.

Total wire removed:
Attachment 392524

Current state: (waiting on wrap to arrive. Ill wrap individual connectors then make the bundle)
Attachment 392525

Thats a nice pile of wire, what are you going to sleeve it with. I noticed you said you had it on order.

same stuff as before from www.cableorganizer.com

Their PET sleeve: http://www.cableorganizer.com/expandable-sleeving/

Ive got some wrap around for the part where i cannot get a full sleeve on it.

Going to depin and sleeve:
Knock sensor
TB
CAm1
Cam2
water temp
boost sol
pressure sensor
egr

Nice, looking good.

Attachment 392458

Putting it back together. Not as clean as i wanted but still better.

Old bay for ref:
Attachment 392459

much cleaner, love it.

looks good

Engine all back together

Attachment 392445

Looks even better with the covers back on, loving the cosworth manifold.

looks great to me! job well done

yup.

I may combine the two runs into 1...well see. itll shrink up the diameter and make it cleaner.

Agreed, a small subtle change can make all the difference.

For now I am staying away from the engine bay. In the process of removing approx 5lbs of wire from the inside of the car. I never use my Navigation so I am pulling the system. Once the screen is out, I will be preparing the location for a oil temp and afr guage. Those will be done the road some but since i have the sound bar location open from adding my sub, I have taken the oppurtunity to make a few changes and trying to get ideas for the interior as well.

Once i get back into my engine bay again, I will be looking to move my starter/alternator power cable. After seeing your tuck renovation and looking over mine, my fat red cable sticks out too much. Should be a really easy move. If i have it figured correctly i shouldn't need to change the length of my cable at all and tie it into my current main loom.

Thats where i have all my gauges...nice and hidden in the cubby.
That nav harness is a beast. Connects in so many places.

Started the engine today. Fired right up. Did not care about the shortened TB or cam pos sensor wires. The only thing it cared a little about is that i forgot to connect the brake booster hose on the plenum = vacuum leak but not a big deal since i am MAP tuned and no MAF.

Awsome, glad to hear there were no issues. Hearing that really makes me want to dig back in.
My harness and nav are out now and put the interior back in for now. lol.

Doing some more work. This harness is the one that runs to the front for the radiator fans, horns, crash sensor, pass headlight. It was NASTY..covered in fluid/sticky. Nissan used a ton of tape and that split loom plastic crap.

Also deleting the 3 clips for the Washer fluid tank (front, rear and level sensor) and the clip for the hood latch closed. That will remove 8 wires from the harness.

Not done yet...just got all the crap pulled off and ready to de-pin and re-wrap.

Attachment 388245

Attachment 388246

Attachment 388247

All the crap that nissan used:
Attachment 388248

Also my engine bay colors are changing again...
Attachment 388249