EGR Emulators

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Originally Posted by phl

What's the cost of Revive? I'm not sure how clean or dirty mine is, but it can't hurt to carry out preventive maintenance before there is a problem. [Edit] Just saw the price; rather expensive...

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Not compared to the cost of EGRs and turbos. I put it in the same category as quality oil and filters.

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Originally Posted by Marty110

To be honest I dont care if I dont get better economy or power or what ever as I was already happy there. The main thing for me is that at my milage I am glad to have the EGR's closed permanently and avoiding possibly looming removal for strip and clean or replace - a PITA of a job and probably more expensive than the emulators (I cant do the job myself you see so would have to pay someone).

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OK emulators fitted and a few km under the belt and can report that I have a 9% improvement in economy. I expect that it will improve further once I get a chance to clean the MAF sensors. As stated, I was happy with it before so this is all bonus :D

I have a few hundred EGR plugs I can sell if your stuck getting them for your emulators.

Hi, how are you. Thanks for the offer. I have bags of the early plugs thanks.
It was the D4 plugs I needed but luckily I tracked them down and now the harnesses are made ready to release the D4 Emulators.

I appreciate the help. Thanks

How soon do you expect to have them up on your site for sale Gally?

Gally
Have you measured EGTs and EGR activation to look at the impact of recirculated exhaust gasses on quickly reducing EGTs.

Is there a pattern to the ECU opening the EGRs?

I could be in the market for something like this but am concerned about temp spikes and heat generally in the tdv8 especially when towing.

My tdv8 is currently running great.

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Originally Posted by strydes

How soon do you expect to have them up on your site for sale Gally?

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Not too long at all now. I have been putting them through their paces and they are working very well.

Do you intend having a single EGR emulator with 3.0 style connector with MAF connection for the 4.4?

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Originally Posted by rar110

Gally
Have you measured EGTs and EGR activation to look at the impact of recirculated exhaust gasses on quickly reducing EGTs.

Is there a pattern to the ECU opening the EGRs?

I could be in the market for something like this but am concerned about temp spikes and heat generally in the tdv8 especially when towing.

My tdv8 is currently running great.

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Hi, I have done extensive testing on both. From an engine management point of view,

there is no strategy to take advantage of lower EGT's only lower combustion temperatures for NOx purposes. The knock on effect from lower combustion temperature is lower exhaust gas temperatures and of course reduced power, but this only happens at idle until running temperature is reached, part throttle and cruising at around 1800-2200 rpm at all other conditions the EGR's are closed.

On acceleration and wide open throttle the EGR's are closed to get maximum power return from each combustion stroke.

There are now hundreds of TDV6's and TDV'8 with their EGR's disabled and there has been no problems with Exhaust temperatures. Some have towed caravans and camper trailers on trips across the Nullarbor and others up the Gibb River Road with no ill effect.

I did the tests over a 3 year period. (Its been a long time coming lol)

Hope this Helps :D

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Originally Posted by Graeme

Do you intend having a single EGR emulator with 3.0 style connector with MAF connection for the 4.4?

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Hi Graeme, I haven't attacked the 4.4 yet. Maybe after I have released the 3.0.
As you say It shares the same plug.
I have done some basic tests, monitoring what the EGR temp sensor effects are on the fueling strategy but that's as far as I have got.