Well that is wot I was lead to believe too I know that the V6 has only one turbo compared to the V8, but I thought that was were the differences lay and the rest was the same common design..... but wot they both have in common is cheap fuel that produces loads of soot which naffs all the internal workings up.... EGR air ways, VGT turbo guts and the long list begins... but it's not just Range Rovers that suffer, it's everything that runs of diesel Bloody interfering nanny state government Sod the motorist gits

Anyway I'm trying to combat all the interference by adding 2 stroke oil in to my fuel @200:1.....it's alleged to clean up the engine over time and make things smoother and less prone to the effects of no sulphur, as I'm only at tank 2 stage it's a bit hard to say if its true.... time will tell, but if it all ends in tears at least I can replace the engine for £500, there are some advantages to running a 5 pot lump, although smooth running isn't one of them..... I start to panic (Roverphobia) and then remember that it's a 5 pot and not a 6  Yesterday I couldn't spell Engineer... Today I are one!
Inventor of the 'Guide-o-Matic automatic wheel alignment tool'
Former long term L322 owner, Up/Down graded to a Classic Tractor!

Mikey wrote:

miggit wrote:

I would take a look at the slightly smaller version of that engine (V6) the EGR delete re-map is a must do, just because you've got 2 extra cylinders doesn't mean that the V8 will not suffer similar problems to the V6, infact I think that you'll find there are a lot of common faults...... turbo hoses, turbo's and EGR's for a kick off

The TDV6 and the TDV8 are not related, in any way, shape or form

A poor choice of words, on my part

They are the same "family" known as Lion V6/V8, and they share a handful of parts, but that's where the similarities end

Regardless, The EGRs on the V8 are much more reliable than that of the V6, and a few tuners I have spoke to do not advise blanking the EGR system on the TDV8

I can't see a reason why the EGRs can't be blanked off on the TDV8 apart from hacking the software to compensate. Therein lies the difficulty I think.

Whilst I was reading through the workshop manual when I flooded the transfer box and was considering getting shot if it I read through the engine section and starting reading up about how Bell and similar have tried to get them running outside the car. In my opinion they've approached things the wrong way around but then I supposed they're more mechanical engineers rather than electronic.

They appear to be using the standard ECUs and faking various inputs such as wheel speeds etc. Whereas reading through the manual everything on those engines is electronic so, for an electronic engineer such as myself, I would actually go down the route of building a completely custom ECU, or perhaps capitalise on work done by guys such as MegaSquirt. Unlike other engines there's that would need to be done mechanically to "tune" it, aside from blanking the EGRs.

If you still it down to the basics you need the crank position and the ability to fire the injectors at the right time depending on throttle position. Being a common rail system actually makes it easier since you just need to maintain pressure rather than time the pump. All the other sensors help with refining the engine rather than requiring it to run. You would lose out, at least initially on stuff like the terrain response which monitors everything but then that can always be reverse engineered as well. The hardest side of the electronics would be dealing with the crap that is an automotive environment, but then again my day job involves designing systems that can be used in vehicles so no real excuses there.

Maybe when I pack in my current job, move somewhere with some space and can find a rear ended donor cheaply I can test my theories! Naturally I'd put it into a Defender first, keep things simple and would then have something that goes like stink. I would imagine mating it up to a 6HP26X or the 8 speed wouldn't be too difficult, again a matter of taking over control of the electrics in that and making it slightly dumber initially. Ed

"and a few tuners I have spoke to do not advise blanking the EGR system on the TDV8"

I'm not doubting they told you that but I do wonder how they got to that decision...??? Did they do it to several TDV8's and they blew up...!!!!

Or is it the case with "tuners" and "engineers" that if they aren't able to do it, then it "shouldn't" be done...???

They probably tried and realised that they couldn't stop it throwing up fault codes as the system was more clever than they were, so just decreed it shouldn't be done....  Pete

__________________________________________________
2014 L405 Autobiography SDV8 4.4 Loire Blue Ebony interior
2011 L322 Vogue SE 4.4 TDV8 Baltic Blue. Parchment over Navy Interior. Sold
2012 L322 Autobiography 5.0 Supercharged Ipanema Sand, Jet Interior. Sold
2002 L322 Vogue 4.4 V8 Epson Green, Ivory over Aspen Interior (Fatty Offroader) Sold
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I posted at the same time as Ed... he said it better than me....  Pete

__________________________________________________
2014 L405 Autobiography SDV8 4.4 Loire Blue Ebony interior
2011 L322 Vogue SE 4.4 TDV8 Baltic Blue. Parchment over Navy Interior. Sold
2012 L322 Autobiography 5.0 Supercharged Ipanema Sand, Jet Interior. Sold
2002 L322 Vogue 4.4 V8 Epson Green, Ivory over Aspen Interior (Fatty Offroader) Sold
-Click for Project Fatty off roader-

On the point of TDV6 and TDV8 differences.

Somewhere I came across a reason why there tend to be more failures in the SSRR vs. FFRR in TDV8 form is because the more cramped layout in the Sport can cause one turbo to overheat more. Which goes to highlight that layout in the engine bay can cause all sorts of problems.

I've often wondered what the side effects of mounting turbos lower down in the FF would be when it comes to wading, dunking something nice and warm into cold water. Maybe that's why JLR never built a raised intake for it in the G4 to reduce the temptation of going deeper. Although the sport does, but maybe not for the TDV8 variant as the intake is on the wrong side (at least on the FF) Ed

Haylands wrote:

I posted at the same time as Ed... he said it better than me....

Ironically the bit I'd be lacking is the tuning expertise. Maybe I should approach Bell and offer to build the ECU?  Ed

Haylands wrote:

"and a few tuners I have spoke to do not advise blanking the EGR system on the TDV8"

I'm not doubting they told you that but I do wonder how they got to that decision...??? Did they do it to several TDV8's and they blew up...!!!!

Or is it the case with "tuners" and "engineers" that if they aren't able to do it, then it "shouldn't" be done...???

They probably tried and realised that they couldn't stop it throwing up fault codes as the system was more clever than they were, so just decreed it shouldn't be done....

Wow. Really?

Not going to start throwing names around, but they are one of the most highly regarded Land Rover tuning specialists in the country. They said it could be done, and without issue, but advised me not to. They have mapped 3 of my own cars now, if they advise against it, I'd take their word over an Internet "expert"

I'm also curious also, because fundamentally a diesel engine requires fuel and air.

Although the TDV8 was designed as a Euro 4/5? engine so I suspect without EGR they won't meant emissions which then causes a whole host of issues.

I suspect, and it is only suspect, that the remap is possible as they say but the consequences are more to do with legal stuff rather than technical stuff. Which is understandable given they are a business.

Unfortunately even if you delete the EGRs, put it in an old vehicle and it doesn't meet emissions you're still stuffed because its based on the age of the engine rather than the vehicle (again I think, based off my own research rather than what someone said). So if you put a period engine in then you need to meet emissions for the period engine, if you put a Euro 6 engine into a series 1 you need to meet Euro 6 standards. Ed

One thought, which I haven't got my head around why, is perhaps LR designed the engine to run hotter and relies on some EGR? But then there is a cooler on the assembly do that doesn't make sense. Ed

There's an Australian business selling emulators for the tdv8.

You unplug the EGR in the closed position. Plug in the emulator and the ecu talks to this back and forth thinking it's the EGR. It sounds pretty good. ______________________________
Vogue tdv8 08MY poverty pack - wow

Link below

http://store.autocode.com.au/egr-emulator.html ______________________________
Vogue tdv8 08MY poverty pack - wow

Going back to previous posts in pretty sure that the ECUs monitor stuff before and after the EGR so would be curious as to whether these emulators throw up error codes because other stuff is outside expected parameters. Ed

I have my EGR'S deleted by a reputable company. They tell me they don't advertise as its a grey area. It doesn't throw any fault codes. Time will tell if it blows up.