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Thread: ECU Upgrade

  1. #11
    Join Date
    Nov 2015
    Location
    Merbein
    Posts
    135
    So an EU3 ECU and intercooler is worth tracking down then, don't have a Nanocom but i guess i can find someone. If i bypass the modulator then once i get to the overboost limit (22PSI ?) it will shut down? how do you you get past the limit, i'm guessing only with a remapped ECU? I'll start doing some research on prices. Who does the BAS ECU?
    PeterN
    70' 164 Manual Volvo 227,000miles play car.
    2001 BMW R1150RT 105,000Km "Bruce"
    2000 D2 TD5 Auto 269,000Km and climbing."Leaky" (VK3JUG)
    2016 ST 3.0l Patrol "slug" work hack 60,000Km.

  2. #12
    Join Date
    Jul 2017
    Location
    Victoria
    Posts
    280
    Quote Originally Posted by knuts2au View Post
    So an EU3 ECU and intercooler is worth tracking down then, don't have a Nanocom but i guess i can find someone. If i bypass the modulator then once i get to the overboost limit (22PSI ?) it will shut down? how do you you get past the limit, i'm guessing only with a remapped ECU? I'll start doing some research on prices. Who does the BAS ECU?


    You need an boost box to bypass the factory limit I am running 25psi on my setup with an manual boost controller,

    You just need to find an auto or manual NNN ecu and get an td5inside remap and it will be so much better

    The intercooler just helps the egts

  3. #13
    Join Date
    May 2014
    Location
    Point Cook, VIC
    Posts
    554
    The Td5 will definitely benefit from an upgraded inter-cooler (I fitted an Allisport Inter-cooler to mine when I had it) and give noticeable improvements at low revs - but this was with a manual. I found I could hold 3rd gear down to much lower speeds. As soon as you start remapping the Td5, as posted above you must get an EGT gauge fitted as it will hit high exhaust gas temps very quickly. With a remap you will end up driving to the EGT to keep temps below 600. I would not remap without an EGT gauge fitted.

    The Td5 also responds well to fitting an external tuning box, but a remap is the safer option. So upgrade the ECU and then get a Td5Inside remap and make sure you specify the intended use and you will get a map that suits you best. I would limit torque to 380-400Nm unless you want to also upgrade the gearbox - both the auto and manual are rated for 380Nm. Once you have a remap you then may also want to upgrade the torque converter - Ashcrofts did a heavy duty torque converter for the Td5 which had a much lower stall speed but I believe these are hard to get hold of now. The standard auto TC has a stall speed far too high and outside where the Td5 is making peak torque but they did this to mask the issue with the Td5 bogging down at low revs. With the remap on an auto you may even want the peak torque to be held between 2000-3000 rpm as only the manual will truly benefit from getting torque down lower.

    At around 400Nm you will find the D2 is as quick as the stock TdV6 D3. I fitted a DTUK tuning box to mine (no longer available) which was hard wired to only switch on under near full throttle using a toggle switch under the throttle, and with the Allisport IC and it would accelerate about 0.5 second quicker from 0-100 than my stock D3 which is a big improvement over the stock D2. I back-calculated I would have been getting around 420Nm of torque from these two mods alone. Was good for short sprints and overtaking, but a remap would be better and safer for sustain high loads as I could easily hit 600-700 deg EGT. Tuning boxes need to be used with caution.

    Enjoy the mod path you take - once you start though it becomes addictive and you will spend more and more on each incremental gain until you realise it is time to get a D3. Good thing is when you do sell the D2, all your mods can be removed and sold separately which will get you more money back (so keep the original ECU and IC).

  4. #14
    Join Date
    Dec 2016
    Location
    New Lambton, NSW
    Posts
    675
    Quote Originally Posted by Kaaaiju View Post
    You need an boost box to bypass the factory limit I am running 25psi on my setup with an manual boost controller,

    You just need to find an auto or manual NNN ecu and get an td5inside remap and it will be so much better

    The intercooler just helps the egts

    You don't need a boost box to bypass the factory limits, a good tuner should be able to modify the factory limits without adding one.

    I'm running a tune that isn't using one, it's only a "stage 1" type of tune but would do what the OP has asked and more....

  5. #15
    Join Date
    Jul 2017
    Location
    Victoria
    Posts
    280
    My old disco always hit boost cut at 21psi but my new d2a with an td5inside hybrid turbo has to have an boost box installed so it can trick the map sensor as I can run 29psi now and no issues



    For the OP get an NNN ecu and an td5inside remap with an Euro 3 IC and you will see an massive improvement

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