Jump to content
SAU Community

Recommended Posts

I was on my way installing my flex fuel setup on my Elite 2500 but upon further doing, I figured I cannot hijack my OEM FPCM wiring because it seems this pins to a Digital Pulse output (B25-B26) on the Haltech and I need to pin it to a Synchronized Pulsed input (B8-B9). Does anybody know what pin on the R33 GTR connector I can tap into for a SPI signal? I'm running the PNP harness. I don't see this information anywhere. Any other approaches i'm not seeing would be appreciated

On the pnp harness adaptor there is a plug that has spare wires/pins hanging out of it and one of them is a digitally pulsed input, you need to put the signal wire into that and then go into your haltech software and tell the ecu which pin you have put it on

3 hours ago, r32-25t said:

On the pnp harness adaptor there is a plug that has spare wires/pins hanging out of it and one of them is a digitally pulsed input, you need to put the signal wire into that and then go into your haltech software and tell the ecu which pin you have put it on

I’m not exactly sure what you’re referring to. I don’t see spare wires/pins hanging out of my PNP harness

Are you talking about one of the spare ports on the ECU?

Edited by cachorro

There are 3 black plugs in the back of your pnp adaptor image.thumb.jpg.bd55a1958f74113c05d4373f04e028cc.jpg the smallest plug (16 pin) is full of spare inputs and outputs. Use your supplied instructions to find the correct input and hook it into that 

  • Like 1
9 hours ago, r32-25t said:

There are 3 black plugs in the back of your pnp adaptor image.thumb.jpg.bd55a1958f74113c05d4373f04e028cc.jpg the smallest plug (16 pin) is full of spare inputs and outputs. Use your supplied instructions to find the correct input and hook it into that 

Thanks for the input. Yes, i'm on the same page. I've seen that and B8 is exactly what i'm trying to tap into. What's missing is that I'm using the PNP harness to plug to the OEM connector. To pin into B8, I'm trying to find out what pin on my OEM ECU connector that would translate to and that's what i'm having trouble with. I would like to avoid having to splice into the haltech PNP harness

Please help me understand if there's something i'm missing

Edited by cachorro

Look on Haltech how to do it, as your Flex 12v (not 5v), GND and SPI pins should all go to this AUX connector. You don't pull the connector apart. You crimp your wire on and insert it from the rear into the connector. Be careful though, before inserting pin into connector there is a tab on the back that you lift up, then push back down to lock into position. You won't seat the pin properly without doing this. Also the pins are a prick to crimp, as they are meant for 20awg wire and need the correct crimper, or be extremely skilled with long nose pliers. Not really for the novice

  • Like 2
17 hours ago, BK said:

Look on Haltech how to do it, as your Flex 12v (not 5v), GND and SPI pins should all go to this AUX connector. You don't pull the connector apart. You crimp your wire on and insert it from the rear into the connector. Be careful though, before inserting pin into connector there is a tab on the back that you lift up, then push back down to lock into position. You won't seat the pin properly without doing this. Also the pins are a prick to crimp, as they are meant for 20awg wire and need the correct crimper, or be extremely skilled with long nose pliers. Not really for the novice

Cheers, this really helps. I've even called Haltech and they've expressed what a PITA this tyco 16 pin connector is.

I'll be relocating the ground to ECU but I think i'll keep the power tapped to the fuel pump relay. I hope this won't Do you think this will be a problem?

Edited by cachorro

Because it's a digital signal, you should be okay not using sensor GND. For sensors such as temperature, pressure, analogue inputs then you must use sensor power and sensor ground so there are no voltage offsets.

On 17/08/2020 at 7:40 AM, cachorro said:

I see now. My obstacle is tapping into this 16 pin connector. I cannot take it apart to pin into it

Hi mate. I saw your post on the Haltech forum about the 16 pin connector. Refer to my earlier post, I said "lift up", not lift up and completely remove the centre tab bit. It's not supposed to move far. After looking at what you've done to the connector you've probably stuffed it, as that centre part is not supposed to come right out, and won't, unless there is no pins in it. I'd be replacing the entire thing now.

It's just a lock for the pins. You stick something sharp to flick it up no more than a mm just to release it, put your pin in, hear it click, and then snap the tab back down. Click

Do you even have a crimper that will do the pin ? As I said it's pretty specific. I good one that works and is cheaper than an AMP / TYCO crimper is the Jaycar one. You want something that doesn't ratchet for such small pins. Note the small end part-

Crimping Tool for Non-Insulated Lugs

Works well.

  • Like 1
2 hours ago, BK said:

Hi mate. I saw your post on the Haltech forum about the 16 pin connector. Refer to my earlier post, I said "lift up", not lift up and completely remove the centre tab bit. It's not supposed to move far. After looking at what you've done to the connector you've probably stuffed it, as that centre part is not supposed to come right out, and won't, unless there is no pins in it. I'd be replacing the entire thing now.

It's just a lock for the pins. You stick something sharp to flick it up no more than a mm just to release it, put your pin in, hear it click, and then snap the tab back down. Click

Do you even have a crimper that will do the pin ? As I said it's pretty specific. I good one that works and is cheaper than an AMP / TYCO crimper is the Jaycar one. You want something that doesn't ratchet for such small pins. Note the small end part-

Crimping Tool for Non-Insulated Lugs

Works well.

I actually ended up practicing removing the existing pins in the connector by removing them and reinserting them making sure they lock, based on instruction I received from Haltech. I have it down now. I'm awaiting for the below crimper which seems acceptable for the job. I hope i'm all set now to finish the job for the upcoming weekend.

https://www.amazon.com/gp/product/B07WSCJVMD/ref=ppx_yo_dt_b_asin_title_o01_s00?ie=UTF8&psc=1

you dont want something that ratchets when you work on tiny pins, i havent done any automotive wiring. i have however built 3d printers up that use similar style dupont/JST/Microfit connectors. best tool for the job in my opinion (non ratcheting) is something like an engineers PA-09

https://rhinotools.com.au/product/pa-09-micro-terminal-crimper/

On 8/19/2020 at 1:22 AM, BK said:

Exactly. Ratcheting crimpers with small pins suck. You can instantly release your grip and correct if your not quite lined up with springs loaded non ratchet.

I was actually pleasantly surprised by the set I bought. Solid crimps. Flex fuel is now live. Cheers gents.

One more question:

The aux connectors have 4 wires attached to the ECU and it came like that from Haltech. Does anybody know what exactly these are for? It looks like pins 6, 5, 14, and 13.

 

Pin 5 looks like its for VVT output which I don't have

Pin 6 looks is a spare output

Same for 13 and 14

I was wondering if I can remove them to have the aux output only attached to sensors through out the car (and not the ECU as well)

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now


  • Similar Content

  • Latest Posts

    • I am getting the same issue. Did you resolve it? I just got it after installing my new super coppermix and literally the same issue, new fork, new 18mm carrier, release bearing that came with the kit and replicated the exact same sound. 
    • If you like - I have the STL files so I can email em. There's a couple of gotchas (i.e the holes are not threaded so you might need/will need) to utilize some M3 melt-in threads for some of the points. However if you want to be super accurate, and are willing to remove your calipers and your SHOCKS it's a really good tool. You also might need to scale the part that measures the tyre width a bit wider. It defaults to a 7.5in tyre and I mean who is running that. Luckily with the magic of CAD this is very easy to rescale.
    • jeebus. glad you weren't under it while performing the stunt. Also thanks for the link to the wheel measurer, exactly what I needed
    • In the older stuff there were very significant differences 2wd to 4wd, for example Stagea had strut front end for 2wd and double wishbone for 4wd so it was not minor to swap. From poking around the 2wd v37, it *looks* like it might be more possible; some of the parts specifically have "2wd" stamped on them which suggests the platforms are more similar. You'd still want to start with a 4wd half cut to swap stuff from though. I'd suggest if you don't have a tune on the ECU you don't really need one on the trans either. Throttle mapping is in the ECU side (and you can always use a Roar Pedal if you want the throttle to actually respond to your foot), and really if you are happy with the stock power you probably accept the stock trans behaviour too....its all made to be "sporty" not racey.
    • So, updates. I have not washed the car since it came back from Tassie. I've driven it around a bit but not got around to actually sorting it out. I DID raise it because I cracked the rear bar leaving a hotel which was very distressing. Interestingly, the car drives more compliant now that it's raised a fair bit (5mm front, 15mm rear). Also noticed that my FR height was 10mm lower than FL. So that's now sorted out, too. I also bought this and had it printed: https://www.etsy.com/au/listing/1576422240/wheel-and-tire-fitment-tool-universal?ref=shop_home_feat_1&dd=1&logging_key=08f604d9fa4cc383550ba985e6ac85cd5cac7fbb%3A1576422240 Now, if I was smart I would have taken my brake calipers off to actually use this correctly but it was evident enough to me that in the region where the caliper was... there was nothing to hit suspension/guard/arm wise. So I'm going with "it'll be fine" after using the tool to hopefully very precisely measure the wheel clearance. Also while doing this, I had the very VERY bad idea of jacking one of the wheels/suspension arms up while the rest of the car was on jack stands. I did this to see how the arm would travel. This all was well and good until the car slid off the stands and went through a fence. So don't do that. Incredibly nobody was hurt and there was only minor damage to the rear bumper as the car didn't have far to slide, and had 3-4 wheels on it. The only damage turned out to be the fence itself which was easy to fix, and a little bit of damage to the fibreglass rear bumper trim. I had already planned to try a touch up paint kit to fix the time I drove into my garage door to see if it'd help in the interim before I get it fixed properly. I used the Dr Colorchip kit after looking online and seeing everyone talking about it. Yes it's made for chips and not huge broken missing pieces and I'll be 500% recommending it for stone chips after using it for stupid things like me. This took about ... 10 minutes and looking at the half assed photo the 30 second job I did on the bumper corner was almost perfect just by using the tiny little brush and painting it in. The sealact stuff to remove over-painting is really useful, so if/when I do it again I'll likely slather the touch up paint well over it and then clean it up with the cleaning solution. The wheels should arrive in a couple of weeks. I am still kinda confident after doing a stupid amount of measuring (and borrowing a set of 18x10.5+15) that they will not fit because I overlooked something, somehow and flew too close to the sun. ALSO R34 GTR guard liners do not fit on a GTT. I bought the undertray brake duct guides and had the wonderful problem of them not fitting my intake, my oil cooler and the liners themselves were even worse. Attempting to fit them won't work in general - You would have to cut them up as another poster mentioned as the bodywork is different on the GTT. At least I can try to resell them. So instead of cutting those up, I cut up my old already-cut-up GTT liners and extended them by using some PP plastic and drilling some 8mm holes for some nissan clips for the 'extra' bit. Because I was happy to cut them I was able to mount them pretty damn forward so I now have some semblance of guard liners, and the brake vents seal the bumper from the bottom. It sort-of-looks like this, to give some idea - If you look at the GTR and then the GTT this is when I realised that I needed to seriously measure as the inside of the rim area is entirely, entirely, entirely different and could not take any internet measurements for granted.   
×
×
  • Create New...