VW LT 35 turbo output.

[HDi fun]

Originally Posted by Harvey

I have been told the EDC16+ equipped Vectras with DPF have more tuning potential but I am not sure I believe that.

I am not interested in LPG as the car is a load carrier and I can't be bothered with a cylinder but I have also thought of nitrous oxide (just for a laugh, pun intended) and the cylinder would mount easily behind the passenger or driver's seat. Not sure what I would tell my Wife that was as it is her car.
Making a Hybrid between the 2052 and the 1756 or whatever it is now the OE turbo on the Vectra with the grafted on 56 diameter wheel now has to be a possibility but I go back to my concerns that I am running 1.9 litres and the disparity between my 17 exhaust housing and the already big 56 diameter wheel. I will mull it over.

You might have a point about the later DPF Vectras and tuning potential. My 406 had the earlier EDC15 ECU.

The possibility of higher tuning on the DPF cars might be simply due to the fact that it's a restriction that can be removed, rather than a direct by-product of the EDC16 ECU itself.

Of course, you'd have to code out the DPF completely in the ECU.

LPG in conjunction with derv is recognised as a good way to increase performance. It does work. Like you, though, I see it as a crude mechanism. Not something I'd even bother doing.

It's fine for commercials - AVDC's fleet of refuse vehicles operates on such a mix but it's not remotely practical for any of us who actually need seats and luggage space in our cars.

[jarrus]

I would have thought it better,

Think about it, it clears smoke to nothing so a better prospect than a DPF due to the fact it doesn't have to be "baby'd" and the added performance is massive... and it can reduce the turbo lag

[Harvey]

Carrying a gas cylinder about is a no-no as far as I am concerned as it takes up space and adds weight. A small bottle of nitrous oxide for a bit of fun or just for a laugh might be tolerated.
The extra performance from the EDC 16+ is I believe attributed to the greater ECU processing capability which is far greater than the EDC 16 but I only come to that conclusion from having looked at the menu software and seen all the additional features and facilities on the 16+. I guess you would totally remove the DPF and switch the bloody light out with the map and stop it interfering with any other signals to the ECU to reduce performance.

Interestingly after half a dozen attempts I think I have now successfully deleted the EGR. I previously had a blanking plate on the inlet manifold to EGR connection but this kept putting on a check light. From an interesting article I read elsewhere I have now drilled an 8.5mm hole in the centre of the blanking plate and a percentage of gas can still recycle and so far no management light.

[jarrus]

has no one been able to map out the egr at all?

Trust me the weight gains are minimal and the performance gains and the economy gains are massive, I will be adding to my diesel eventually,

Anyway I was wondering if you could help be chap, I was looking at getting a bigger turbo for my car, and possibly going VNT, I'm just finding the control mechanism for it, but as for the turbo I think I need to go hybrid so the power band isn't mega small for the compressor that is needed, and it also need to have a wastegate actuator rather than a VNT one apparantly I don't know what the difference is, if you can'tdo the VNT then a waste gated turbo or even possibly a twin scroll turbo would be good

would you be able to help, sorry for hijacking your thread

on another note then using the gt20 turbine and the 56 compressor wheel will shift the power up the rev range, but if mapped correctly you should still have a lot of low down torque to make everyday driving pleasurable but more power is achieveable

[Harvey]

Originally Posted by jarrus

has no one been able to map out the egr at all?

Trust me the weight gains are minimal and the performance gains and the economy gains are massive, I will be adding to my diesel eventually,

Anyway I was wondering if you could help be chap, I was looking at getting a bigger turbo for my car, and possibly going VNT, I'm just finding the control mechanism for it, but as for the turbo I think I need to go hybrid so the power band isn't mega small for the compressor that is needed, and it also need to have a wastegate actuator rather than a VNT one apparantly I don't know what the difference is, if you can'tdo the VNT then a waste gated turbo or even possibly a twin scroll turbo would be good

would you be able to help, sorry for hijacking your thread

on another note then using the gt20 turbine and the 56 compressor wheel will shift the power up the rev range, but if mapped correctly you should still have a lot of low down torque to make everyday driving pleasurable but more power is achieveable

Workload has been such that this is a late response and I expect I will have to work for most of the weekend.
Correct. No-one has been able to map out the EGR and one prominant mapper said that getting rid of the EGR was too much bother. I suspect it is relatively easy to do on the 16+ ECU which has far more processing capability and far bigger menu including a specific section on the EGR. I think these cars have a particulate filter.
I have now blanked off the EGR with an aluminium plate with an 8.5mm hole and no CEL and when time permits I will make another plate with a 6mm hole and I will be happier with that providing I get no CEL.

Can you send me any links regards operating gas on a diesel to improve economy or performance? This would be of great interest but is not something I know about. Like so many things to do with Vectra C, getting simple stuff like engine performance bits or rear anti roll bar and suppliers just cannot help you.

I only know what I do about VNT turbos from what I am doing on the Vectra 1.9 so I would have to think very carefully about how you would add a VNT turbo to a non VNT car. For a start, you would need a reliable vacuum source, possibly separate to the braking system because the VNT operates on a vacuum WG actuator.
Do you have any photographs or drawings showing your existing turbo installation? I can certainly see the attraction of VNT but because of my lack of existing knowledge there might be a little bit of trial and error there.
Please send me as much information as possible to my email address harveysmith1@btopenworld.com with any photographs or drawings along with your car details, model, year, capacity and all the details of the existing turbo, manufacturer and so on and I can look at that. Also existing power on that turbo and your expectations. As I think you are aware I can make hybrid turbos for performance petrols, particularly Subarus and I am testing an interesting development next weekend which is at the bottom spectrum of our power range but probably a very worthwhile addition if mapping and trials go according to anticipation.
Getting more out of an existing turbo is relatively straight forward depending on what is available and relatively straight forward because you make the best of the existing air and exhaust inlets and outlets.

It is unlikely I will use the existing VW GT2052 as the work to achieve that in relation to the integral exhaust housing/manifold and location of the compressor outlet are such that I best do a bit more research and bite off something that will lead to better output on a 1.9 engine with less hassle. Whether that might be a 2056 is somewhat questionable at this time until I do more work and as I said already time is at a premium.
If you include your phone number with your email and it is easier to talk this through after you give me your basic information above I will give you a ring