Jump to content
SAU Community

Recommended Posts

Hi guys!

I've got an itch to develop a plugin for my M35 2.5DET. It will use an Adaptronic 1280 ECU and a patch harness.

The ecu selection will be because I'm pretty familiar with Adaptronic's now days, and also because the 1280 has an unlimited scope for programming auxillary outputs. This can be used to drive the auto ecu, dash stuff and anything else required. The 1280 is fairly special in it's function block approach to aux programming.

Hardware wise, I will need a ECU (can be damaged I only need the plug/internal pins). Instead of plugging the stock ECU in, it will have the plug and then wiring off to 1280 instead.

I will develop a loom and tune while retaining all the standard functions of the stock ECU. While I am there I will create a detailed pinout of the ECU as well as a value table for each pin (voltages, signal etc)

Does anyone have a broken ECU laying around, or knowledge of where the plugs are available from? Can someone clarify if I can use any 3.5/2.5L ECU, they should have the pins just no internals if the pin is un-utilised for that model.

Cheers, Jase

I am about to have the 920 adaptronic installed. Are you sure you wont still need the standard ECU installed as well?

I know with my install i do.

Edited by Brick

Good luck with this Jason; many hands make light work with this sort of thing.

There are a few guys who have spent a lot of time & money developing solutions for these cars; it would be great to see what some new blood can uncover.

Cheers, Dale.

I don't want to butcher a working ecu if I don't have to.

If any ecu can go full stand alone, it is the 1280. There is a lot to output I think.

I'll keep an eye out on ebay but was hoping for a easy find.

Good luck Jason - I hope something comes of this.

Does the 1280 talk M35 CAN bus? Could be a tall order to control dash/auto g'box etc without the factory ECU involved somewhere along the line.

from reading a bit lately the canbus system uses coded electronic pulses to send to different addresses ( sensors gauges ect ect ) on the same pair of cables.

correct me if i'm wrong ( could very well be ) but I don't think anyone has cracked the code ( sequence and duration of pulses ) for the M35 canbus specifically the vq25det.

mind you I hope I am wrong and this proves to work out for you jason

Edited by stripey

I have a blown one here I will kindly donate to the cause, but unfortunately you are bound to have many issues with this idea. I would be leaving the factory ecu in place, like HKS did with the fcon. Even GTR's leave the factory ecu in place in many cases to keep the attessa etc happy.

The Canbus is simply too different from anything else, most readers won't even pick the ecu up, let alone the other 6 computers in the car.

The electronic throttle will stump you without going cable, it is just too dangerous to run without protection using the twin TPS signals through an opamp to kill power when there is a discrepancy.

The cams are self learning. They change angle constantly and a slight oil viscosity difference will cause a completely different phase angle for a single PWM input. The stock ecu actually learns as the oil warms up and adapts. Quite complicated, and for this reason Haltech didn't incorporate throttle and cams into their 350z plugin until the latest Platinum pro unit. The 3 older ones used the stock ecu and were piggybacked afaik.

Anyway, not trying to be a naysayer, just easier to leave the stock ecu in place and trick it into staying happy imo. I am more than willing to go through all this on the phone if you want to bounce some ideas off me.

  • Like 1

Interesting. The can seems a little more tricky than expected then.

Closed loop cam control should be easy with the 1280.

Throttle is of concern but with some failsafe logic and hardware like Scott mentioned very possible.

Want to pm me a phone number Scott, I'll give you a call when you are free.

If anyone has a engine loom with a good condition ECU plug, it would help also.

If I can't get a stand alone to work perfectly, a patch loom in parallel with the stock ECU is always an option.

I am happy to pay for these things guys!

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

    • Yes, I know🙄 but the sequential is not in my budget... don't want to reduce power neither, so looks like I'm stuck in the rabbit hole🤣
    • You’ll be very upset when you bust that too not to mention the gearing totally sucks. Don’t do it.
    • Is the panel filter one that is oiled? Have you ever cleaned or touched the AFM?
    • So.... the K&N air box thingo was too big, ended up gifting it to a mate, well, by gifting it he actually supplied food and beer at the pub,  which was nice, as it will not sit on a shelf in the garage for the next 10 years I did trim up some of the existing stuff to neaten it all up and gave it some wrinkle paint, unfortunately it currently has a used and abused mish mash of different types of hose clamps, 4 big fat T bolt type (shit), and a few normal clamps of vairing sizes and brands, but..... only until the 6 constant tension black worm clamps that I ordered from EFI solutions turn up next week Currently the current hose clamps are triggering me hard, LOL Is this the final version, probably not, I really want just 2 silicone pieces, a straight bit of silicone from the filter to the MAF is easy and will happen as soon as I head into Just Jap tomorrow, the problematic part is a 30° silicone bend from the MAF to the TB that I can connect the engine breather from the head, I found that there are bulk head fittings for boat bilge pumps that should work, but until I can get a 30° silicone bend the alloy pipe, and the 11ty thousand hose clamps, are there for the foreseeable future 4 hose clamps are golden, 6 are grudgingly acceptable, the 8 currently holding it all together is just taking the piss    I've also ordered 60 more retaining wall blocks for the front yard, I mis-gonculated the height that was required to get above the base of the Photinia's (red robin's) that are the hedge behind the front fence, currently it is 2 blocks high, and about 1/2 a block short, so going 3 blocks high will be above the base of the red robin's, and allow some room for mulch
×
×
  • Create New...