Any 35D Owners install this performance tune?
 

Hey Guys,

Just wanted to see if any members who has a 35D tried this performace tune from JB Performance. The Dyno sheet isnt really a proper Dyno sheet and is kind of worthless. They need HP vs Engine RPM and Torque Vs Engine RPM. I'll email them to see if they can provide a better spec sheet.

Diesel BMW Performance | JBD | Juice Box Diesel | BMW Cold Air Intake | BMW 135 Performance

Thanks,

DaRip

My advice - do not do it. They are a simple plug in gimmick that fools the ECU in thinking the diesel temperature is lower than what it is and so pumps more diesel in at a certain amount of revs.

They are renowned for causing ECU failures, CEL lights and Limp mode.

Thanks for the advice Aidan. I was just curious to see if anybody has installed it.

Thanks,

DaRip

If you wanted to go that route you can buy the kit yourself for around 10 dollars! It is just a resistor in a little flashy box.

oh yeah?? and you know this because????? you have no idea what you are talking about.

Sorry I don't get you?

exactly.. there's a boost target and it's not RPM dependent.

and ECU failures and limp mode??? haha.. there must be quite a few of us who are very lucky!

as expected.

I don't see why you need to be quite ignorant.

If you wish to have a technical debate then I have no problem with that but your comments seem to be a little bit childish and un-educated.

Yes, I removed and binned these "tuning boxes" plenty of times. They fit between the ECU and the fuel delivery pump whether you like it or not. Most of them are fitted at the Diesel temperature sensor.

At a certain amount of revs, just before full boost has been reached, they sure do pump in the extra amount of fuel to give it that little bit more power. Please can somebody post up their dyno chart with having one of these fitted?

Hi,

In Ireland, I repair ECU's. By fooling the ECU, which is what tuning boxes do, the ECU's EPROM chip can get glitched. - This is when it fires up CEL lamps and can often go into limp mode.

How do I fix it? Remove tuning box and throw it in the bin. Remove ECU, remove EPROM chip and reflash it with either its original file map or if the customer wanted a tuned file map.

I have been doing this for years in Ireland so I would be pretty shocked to hear that nobody on here has ever had problems with tuning boxes:confused: