Thread: Can you Remap Bruce Davis TD5 ECU's???

Sounds like you may possibly have another problem in there some where. Sounds suspiciously like the turbo boost pressure may be lower than it should be off idle or the EGR valve is stuck open diluting the fuel mixture especially at low revs.

Check the Turbo wastegate actuator setting. My preference is with my remapped ECU: it is fully closed with the engine turned off. Maybe it is sticking partly open and you need the revs up to get boost pressure where some thing actually starts to happen properly in the combustion chamber.

Check all hoses for air pressure leaks including nipple on air pressure pipe that feeds the wategate madulator (this drives the actuator). Also check the EGR valve is not stuck partly open if it has not been removed.

I wonder if the programme may have been corrupted slightly during upload but that's out of my league. TombRaider is the person to answer your programming question.

BradM

BD has several different ECU upgrades, literally mild to wild. Last time I spoke to him he no longer offers the wild one for standardish cars coz of the drivability issues you describe. Plus heaps of black smoke. It really needs to be mated up to a big intercooloer for best results.

I had exactly the same issues, & took it back. He reflashed it at no cost to the milder one. Much easier to drive, more get up & go than std. But without the "twang!" when it changes maps.

Give him a call.

Regards
Max P

Yep, I had the exact same issues with my first BD chip and spent months trying to fix it. In the end BD remapped mine free to a milder version which has improved the drivability a lot, but has a lot lesss power (still more than standard however). I would still like some more low down torque as I still think it can be improved upon and am currently talking with Tombraider about some options

Chat to BD in the first instance and see if he will redo the map for you.

Aye, Mick

BD has several different ECU upgrades, literally mild to wild. Last time I spoke to him he no longer offers the wild one for standardish cars coz of the drivability issues you describe. Plus heaps of black smoke. It really needs to be mated up to a big intercooloer for best results.

I had exactly the same issues, & took it back. He reflashed it at no cost to the milder one. Much easier to drive, more get up & go than std. But without the "twang!" when it changes maps.

Yep, I had the exact same issues with my first BD chip and spent months trying to fix it. In the end BD remapped mine free to a milder version which has improved the drivability a lot, but has lot lots of power (still more than standard however). I would still like some more low down torque as I still think it can be improved upon and am currently talking with Tombraider about some options

Chat to BD in the first instance and see if he will redo the map for you.

Geeez...... I am glad that I went with the TRT solution.

Thanks guys,

I’m guessing mines set on the wild side…. The acceleration in mine goes nothing…… nothing….. Then wham! It’s similar to being kicked in the back of the head by an irate bull!
I tried looking on the net for Bruce Davis but couldn’t find anything… does anyone know the phone number? I’m in Brisbane do you think anyone up here can remap the ECU? Or can I just take the ECU out and send it down to Bruce Davis?

Cheers

02 9679 1978

OK, I can advise you here...

The problem you have is your expecting small cubes to make big torque...

And with a turbo, they do, but they need revs...

Yes, the mapping you have is more than likely VERY peaky... A sudden burst after a lapse...

Changing to a softer tune will help, but not a lot.. With your 35s on.

The 35's throw the gearing out enough to drag it down...

Add to this the dual maps and no Wastegate control in the ECU on a defender (The disco has 3 maps and wastegate control, allowing it to boost faster) and your pushing it for that vehicle.

Changing gearing to 3.9's, throwing in a slightly milder mapping and you'll be very happy...

Believe me! I know.... Did this trial myself using my own mapping.. The 35s drag it down....

What's interesting with these upgrades - and I don't know the answer to this -

Is whether there is actually less torque off the mark. There's certainly a huge gap as they change maps, and that's what we can feel, but would the idle/low revs map be much different?

Mike or anyone else know?

Regards
Max P