IRB Developments Td5 Dual/Two Channel Turbo Booster Box adjustable tuning instructio?

twr7cx · May 18, 2018

Anyone have the instructions handy for adjusting/tuning the IRB Developments Dual/Two Channel Turbo Booster Box for Td5? I bought and fitted mine in around 2013 and seem to have misplaced the guidance since then (thankfully I haven't had a need to touch it). I'm currently have intermittent issues with the vehicle including surging and power cut off (suspected due to over boosting) so am trying to determine if the fault is the MAF or Turbo Booster Box is faulty or requiring adjustment.

Nanocom Evolution spat out the following when I read the codes yesterday (it's been a long time since I've pulled them):

(1,5) DRIVER DEMAND PROBLEM 1, (LOGGED LOW).---
(2,8) AMBIENT PRESSURE CIRCUIT, (LOGGED LOW).
---
(3,5) DRIVER DEMAND PROBLEM 1, (LOGGED HIGH).
---
(3,7) AIR FLOW CIRCUIT, (LOGGED HIGH).
---
(4,1) INLET AIR TEMPERATURE CIRCUIT, (LOGGED HIGH).
---
(4,3) COOLANT TEMPERATURE CIRCUIT, (LOGGED HIGH).
---
(15,2) HIGH SPEED CRANK (LOGGED).
---
(16,2) HIGH SPEED CRANK (LOGGED).
---
(19,3) CAN TX /RX ERROR, (LOGGED).
---
(20,2) TURBOCHARGER OVERBOOSTING, (LOGGED).
---
(20,5) EGR VALVE STUCK CLOSED, (LOGGED).
---
(22,1) ROAD SPEED MISSING, (LOGGED).
---
(26,1) ROAD SPEED MISSING, (CURRENT).
---
(27,4) INJECTOR 4 PEAK CHARGE LONG, (LOGGED).

Todays code read:

(3,5) DRIVER DEMAND PROBLEM 1, (LOGGED HIGH).---
(20,2) TURBOCHARGER OVERBOOSTING, (LOGGED).
---
(22,1) ROAD SPEED MISSING, (LOGGED).
---
(24,3) OVERBOOST HAS OCCURRED THIS TRIP, (CURRENT).
---
(26,1) ROAD SPEED MISSING, (CURRENT).
---

On the drive home today I pulled over while it was underpowered and disconnected the MAF sensor which instantly fixed it. Hence why I have narrowed it down to either the MAF or Booster Box.

twr7cx · May 21, 2018

I wasn't able to get the instructions from Ian/IRB Developments, but a members of AULRO had a copy and forwarded them to me. For future reference for anyone else, they are:

> Instructions:
>
> 2 channel adjustable 'Anti Limit Box'
>
> Red - 12volt Ignition live or permanent 12v feed (seperate from any feed into the ECU)
> Black - Earth (good)
>
> Yellow (orange) and white are the channel wires - one is for MAF and one is MAP (as per standard boost box). It doesn't matter which way round (obviously they need to be used as a matched pair).
>
> MAF is pin 11 in the red plug (grey wire, green chaser on post 2002) (one from end of the bottom row)
> MAP is pin 6 in the red plug as per a standard boost box. (middle of the bottom row)
>
> The box is set in a safe setting.
>
> The channel connected to the map sensor will be somewhere close, but the maf sensor channel will need quite a few turns clockwise (usually about 4 turns)
>
> Your are aiming to see around 220kpa on the manifold pressure and 620-630kg/hr on the maf sensor under full throttle acceleration when set correctly. This should also stop you killing MAF's.
>
> MAF sensor must be a genuine part, and at idle it should be reading 57 - 62 kghr
>
> To get the pins out of the ECU plug, remove the white anti back out plate and use a pick or small flat bladed screw driver to release the standard pin - look from the front of the plug (not the wire side) and you will see the small tab holding the original wire in place.
>
> Regards
>
> Ian Baughan
>
>IRB Developments
>
> or follow us on Facebook -IRB Developments - Home | Facebook

Using my Nanocom Evolution to data log while driving it would seem that both my MAF and MAP are over where they should be. I've seen above 650kg/hr reading from the MAF and then it's flashed down to O, which I suspect might be due to overload or more air through than it can read?, and the MAP reading has been well above 220kpa which I suspect is triggering the overboost issue.

bankz5152 · May 21, 2018

MAFs dead. Also your Crank Sensor could be on the way out.

Is it a Disco?

Does sound like Overboost for sure

IRB Developments Td5 Dual/Two Channel Turbo Booster Box adjustable tuning instructio?

twr7cx

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twr7cx

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bankz5152

Well-Known Member

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