Thread: TDV6 - SDV6 3.0L Power

Originally Posted by GP1200

in my day job, I can sell you a 500 hp Cummins truck engine all the way up too 600 hp, it's the same engine with no hardware changes at all, they hook a lap top to them, pay the money and give you the HP setting you want.

I'm guessing the entry level 3 litre engine is the same as the full power version, just a software change?

Jack

I have a friend who runs a transport co. He runs Cummins engines,....has 'em badged at 600HP, but they're actually running at 550HP. Mate says drivers feel better if they think they've got 600HP!
Pickles.

Originally Posted by Cambo351

You'd be basically transferring the entire driveline and engine wiring from a RRS into a Disco and programming it to thinking it's a RRS. It's doable, but many hours work.

and even more if you're doing it right - eg the heavier duty RRS TDV8 front suspension for the extra weight ...

Originally Posted by Pickles2

I have a friend who runs a transport co. He runs Cummins engines,....has 'em badged at 600HP, but they're actually running at 550HP. Mate says drivers feel better if they think they've got 600HP!
Pickles.

Happens quite a bit, mind over matter!
Depending on the application, it can make quite a difference to their fuel burn,
Saying that, sometimes you never can get enough....

Have a look at the BAS automotive site.

If they really are mechanically the same, does that mean the TDV6 could be uprated not just to the standard SDV6 outputs, but up to SDV6 re-mapped outputs? That would be spectacular bang for buck...

Um... yes.

Not sure why that would surprising, there are a couple of aftermarket tuning companies who do exactly that. All versions of the 3.0L end up at the same power level.

But the OP was looking for just taking a TDV6 to SDV6 levels by loading a factory tune, and I think I can guess why...

Any aftermarket manipulation of these ECU's leaves a telltale code P167F-00 "Non-OEM calibration loaded" which is impossible to erase or clear. If your car is still under warranty then that's a code you don't want to have showing should there be an engine failure...

You don't get this code if a factory engine tune is loaded to the ECU using the factory diagnostic tool.

Also the factory tunes are conservative and safe, which is nice if you are towing heavy loads in the heat we have here. Putting a big load on an engine that has been tuned for maximum power isn't something i'd recommend.

Originally Posted by Cambo351

Any aftermarket manipulation of these ECU's leaves a telltale code P167F-00 "Non-OEM calibration loaded" which is impossible to erase or clear. If your car is still under warranty then that's a code you don't want to have showing should there be an engine failure...

You don't get this code if a factory engine tune is loaded to the ECU using the factory diagnostic tool.

Not strictly true... Usually P167F-00 pops up from a failed ECU write rather than a Non-OEM calibration (algorithm).

Where it gets interesting:
This code is only viewable with dealer diagnostic equipment, and will not be read or cleared by any other tuning device or diagnostic code reader on the market.This code may also stored in multiple computer modules scattered about the vehicle, meaning that "clearing" or resetting the engine controller alone will not force the code to go away.

Now it gets really fun

Other in-line devices (tuning devices that plug into the engine harness connections rather than being downloaded as a programmer) claim to be undetectable since there is no actual download of a program through the computer system. However, this is not true, as the factory computer(s) collect and store information from the engine in the form of "freeze frames".

These freeze-frame data collections WILL show evidence of the use of any in-line tuning device even after the product is removed, all information is stored in "non-volatile" memory, meaning the information is stored permanently until overwritten.

A traditional "reset" cannot be performed, meaning the evidence of use of a in-line device will be shown to any dealer or engineer for a very, very long time.


However, if written correctly from behind the security then a correctly programmed ECU will present the mapping as OEM to the algorithm and no codes will flag.

The 3.0Ltr is now shipping from the factory in the RRS-2 at 190Kw/600Nm as the TDV6 & 225Kw/700Nm as the SDV6. Amazing what these engines are capable of.