Thread: So what's the difference SDV6 & TDV6

AFAIK the difference between the TDV6 and the SDV6 is the performance. Both engines have twin turbos, but the later SDV6 (sequential turbo) has a higher output.

The sequential bit is that one turbo comes in earlier at low revs (and max'es out early) and the secondary turbo comes in at higher revs and continues through max revs.

Note that the turbos on both engines are operated sequentially.

So that being the case the SDV6 has a better tune ? Is that how it gets more power ?

Originally Posted by Graeme

Note that the turbos on both engines are operated sequentially.

I assume that's the case but possibly more. LR had made the statement that the injectors were different but people discovered that the listed part numbers are the same, at least when the lower power engine was first released. AFAIK tuners can get increased power from the low o/p engines but don't seem to be able to simply replicate the SDV6's o/p so perhaps there is a mechanical difference. It would be easy enough for the engine builders to fit a lower o/p secondary turbo although LR has previously used other tricks such as inlet restrictors on other engines to limit power.

Originally Posted by NOZ

So that being the case the SDV6 has a better tune ? Is that how it gets more power ?

I think its probably a case of higher boost from the turbo/s, but don't quote me on that.

hi Guys,
The SDV6 is tuned for a higher output of power. All components on both the TDV6 and SDV6 are identical, they're just programmed differently.

NOZ, if you want to get more power from your TDV6 so it matches that of an SDV6 pls contact Peter from Superchips NZ. He speciality is Land Rovers and Range Rovers and comes across the ditch once a month or so...

Good Luck!
Muskie

I'm going to speak to the guys at Roo systems, but I'm not to worried about performance at this stage. It had bucket loads more than my old Puma.

i wouldnt.......and LR AUST wouldnt cover the Roo System accessory under their drivetrain warranty....