Bobby Singh A4 3.0 TDI build thread

I agree he talks some pash does that mr Xjay :) But equally forum rules state no personal abuse. Re read them again mate. Plus your blocking up the thread with nonsense.
mdmay said:
I sense a professional bellend

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Admin please delete my posts

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bobby singh said:
July 2017

Braid lines have been installed and the braking is very powerful now.

Suspension wise I had one of the rear springs break on me recently so I put in H&R springs but the ride quality has been poor.

9nzSstt.jpg


Looked ok though:

tJ5pIu8.jpg


KcHUUEZ.jpg


I've now got the Eibach Pro kit in

Scwieot.jpg


kYPkK5r.jpg


Sh0pE6i.jpg


The ride quality is now perfect. The car does sit higher compared with the H&R's but thats ok.

From the ground to the arch I made the following measurements:

H&R's - Front & Rear - 655mm
Eibachs - Front - 666mm - Rear - 663mm

As you can see even though both kits are 30mm there is a difference in height.

On the engine side I've installed some high flow injectors - details of which I will not be releasing but they are working very well with 100deg egt cooler for same amount of fuel.
And I've installed version 2 2260 hybrid with a larger compressor wheel - Hopefully I can get on to the dyno soon.

Cheers
Bobby
Click to expand...
 
Hi Bobby,
I was hoping you could tell me the correct model of eibach springs for my car.
2009 a4 3.0tdi s line.
Ive had H&R springs for a year and they are just too low (im getting a lot of rubbing after installing fresh tyres last week). -steeper sidewall..
I have found this set and think they are the correct ones.
Is this the model you used? your height looks pretty good.

Thanks
 
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  • Performance Springs Pro-Kit E10-15-011-04-22 Audi A4 Avant (8K)
 
100% your rear springs ending 01HA are for a saloon .

03HA are the correct Eibach Pro for your Avant .
 
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January 2018 505hp / 980nm

Well guys managed to hit my target of 500hp
So what’s changed? As you know my s200v has been put up for sale to make way for unique turbo.
EFR7670 with S300v housing :) its a watercooled roller bearing turbo with really nice wheels -
CW:76/57
TW: 70/61, gamma-Ti alloy, lower density (and thus inertia) than conventional Inconel alloys

OsOOspV.jpg

I've been driving for approx a month tuning it and trying to get it right for a power run. Its been task to balance

spool Vs surge - for example more spool is possible but then get surge so the short term workaround is to run less

boost. Long term would be to leak off some air via ECU controlled valve.
So yes it does have lag but it still have same torque as a stock 3.0tdi @ 2.2k in its current form.

Dyno
We turned up on a BMW day ;)
053rbIE.jpg

3nYhXHa.jpg

bedioo4.jpg

oMe0EvL.jpg

Smoke test Video:

captured by Jay

The turbo is really a monster and still has more scope, but I'm out of fuel. I guess with larger injectors 550hp would be on the cards.

EGT's - 900deg
Stock engine (apart from valvesprings)
Stock exhaust apart from downpipe
Stock gearbox
No smoke

Cheers
Bobby
 
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Mr Audi - you really put some effort in :)
Bi turbo - yes they are lovely cars and the low down torque is always nice. In fact from all the turbos I've had I would say the best street turbo was the 2260 hybrid for wider power band on a 3.0tdi
However, not everyone can afford one and there are more single turbo 3.0 TDI's on the road so it made sense to push the boundaries on this platform.

I'm no diesel god but I have learnt a lot from own project cars over the years which means I know some facts rather than just following what people say.

You are correct I do not believe you have 450hp hence why I asked number of times if you have been to a dyno other than the tuners one.
Or at least post some 100 to 200km times with vcds.

The fact is bi turbo engine even with 2.2k rail pressure run 900deg (this is max safe limit before fuel is taken out by the ECU to save itself) which results in around 420hp / 900nm.

Next time I get one in I'll grab the logs and post them.

Final point you mentioned in one post you can get 450hp in a bi turbo with dpf - where is the evidence? I would love to see that.

But maybe open another thread and we can continue on that rather than getting side tracked with my build thread.

Cheers
Bobby
 
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Nicwike said:
Hi Bobby,
I was hoping you could tell me the correct model of eibach springs for my car.
2009 a4 3.0tdi s line.
Ive had H&R springs for a year and they are just too low (im getting a lot of rubbing after installing fresh tyres last week). -steeper sidewall..
I have found this set and think they are the correct ones.
Is this the model you used? your height looks pretty good.

Thanks
Click to expand...

I'll get you this tomorrow - The box is in the garage so should have the part number etc
 
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bobby singh said:
January 2018 505hp / 980nm

Well guys managed to hit my target of 500hp
So what’s changed? As you know my s200v has been put up for sale to make way for unique turbo.
EFR7670 with S300v housing :) its a watercooled roller bearing turbo with really nice wheels -
CW:76/57
TW: 70/61, gamma-Ti alloy, lower density (and thus inertia) than conventional Inconel alloys

OsOOspV.jpg

I've been driving for approx a month tuning it and trying to get it right for a power run. Its been task to balance

spool Vs surge - for example more spool is possible but then get surge so the short term workaround is to run less

boost. Long term would be to leak off some air via ECU controlled valve.
So yes it does have lag but it still have same torque as a stock 3.0tdi @ 2.2k in its current form.
Dyno
We turned up on a BMW day ;)
053rbIE.jpg

3nYhXHa.jpg

bedioo4.jpg

oMe0EvL.jpg

Smoke test Video:

captured by Jay

The turbo is really a monster and still has more scope, but I'm out of fuel. I guess with larger injectors 550hp would

be on the cards.
EGT's - 900deg
Stock engine (apart from valvesprings)
Stock exhaust apart from downpipe
Stock gearbox
No smoke

Cheers
Bobby
Click to expand...
This. Is. INCREDIBLE!!

Loving your work as always

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audi upgrades
Look forward to seeing you soon and the beast when the young one brings his 535d to see you

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mdmay said:
Look forward to seeing you soon and the beast when the young one brings his 535d to see you

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Click to expand...
Likewise mate :)
Chassis is alittle nervious now - each gear change brings a huge rush of power and in the wet...well lets just say traction stays on all the time.
 
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Top job Bobby, Pity you didn't crack the 1000Nm as well as 500bhp but I am sure you will get there once you sort the surge issues.
I presume the compressor housing you are using already has a ported shroud which will help to stop surge.
I see you have the speed sensor connected has that been useful in tuning, I suppose it gives you an idea of where you are on the compressor map and how much you have left in the turbo.
Looking at the compressor map for that wheel seems to be capable of around 60Lb/min plus at around 2.5 bar of boost. I could see you running more than that as well as the wheel seems good for 3 bar, Not surprised you changed the valve springs.
 
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Congratulations, your car is a monster ...

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I don't want to fill your valuable thread with BITDi stuff and it is great to see so much ingenuity be applied to the single turbo units congratulations. Its of tremendous value to a lot of people and really fun to read about. It would be good to one day see you take on a BITDI as a project car. I don't know if that will happen but i know at the moment with my knowledge and from the knowledge out there ( i have asked and had the conversations but none off tuners are working on anything ) no one has taken the cars past STG3. If its possible to go to the figures you have on your car at the moment a BITDI Hybrid would be very interesting indeed. See multiple SQ5 and BITDI tunes on this thread DPF removed and DPF intact https://www.facebook.com/JDEngineer...xOqPdH3gjZ7Zg_YfuJH669QngzqLdMeCTI73ROikHVD1s

Also you ll find a few 1000 nm plus A8 4.tdi !! takes a while to find them you have to scroll scroll scroll

Later . . .. . . till the next time :sign imnew:


bobby singh said:
Mr Audi - you really put some effort in :)
Bi turbo - yes they are lovely cars and the low down torque is always nice. In fact from all the turbos I've had I would say the best street turbo was the 2260 hybrid for wider power band on a 3.0tdi
However, not everyone can afford one and there are more single turbo 3.0 TDI's on the road so it made sense to push the boundaries on this platform.

I'm no diesel god but I have learnt a lot from own project cars over the years which means I know some facts rather than just following what people say.

You are correct I do not believe you have 450hp hence why I asked number of times if you have been to a dyno other than the tuners one.
Or at least post some 100 to 200km times with vcds.

The fact is bi turbo engine even with 2.2k rail pressure run 900deg (this is max safe limit before fuel is taken out by the ECU to save itself) which results in around 420hp / 900nm.

Next time I get one in I'll grab the logs and post them.

Final point you mentioned in one post you can get 450hp in a bi turbo with dpf - where is the evidence? I would love to see that.

But maybe open another thread and we can continue on that rather than getting side tracked with my build thread.

Cheers
Bobby
Click to expand...
 
desertstorm said:
Top job Bobby, Pity you didn't crack the 1000Nm as well as 500bhp but I am sure you will get there once you sort the surge issues.
I presume the compressor housing you are using already has a ported shroud which will help to stop surge.
I see you have the speed sensor connected has that been useful in tuning, I suppose it gives you an idea of where you are on the compressor map and how much you have left in the turbo.
Looking at the compressor map for that wheel seems to be capable of around 60Lb/min plus at around 2.5 bar of boost. I could see you running more than that as well as the wheel seems good for 3 bar, Not surprised you changed the valve springs.
Click to expand...
Thanks Karl - yes housing has anti surge, but the unit pushes a lot of air so I can only think of bleed the air out to prevent surge - maybe like a egr valve.
Speed sensor is working but I don't believe the readings voltage output is too low - I need to test it.

kiros_red said:
Congratulations, your car is a monster ...

Envoyé de mon SM-A520F en utilisant Tapatalk
Click to expand...

Thanks

Devilz said:
505hp
Click to expand...
Thanks
Horia said:
Bravo Bobby, Bravoooooo!!!! :beercheers::grinning:
Click to expand...
You next :)
arad85 said:
Awesome job Bobby!
Click to expand...
Cheers
 
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bobby singh said:
Thanks Karl - yes housing has anti surge, but the unit pushes a lot of air so I can only think of bleed the air out to prevent surge - maybe like a egr valve.
Speed sensor is working but I don't believe the readings voltage output is too low - I need to test it.



Thanks


Thanks

You next :)

Cheers
Click to expand...

@bobby singh it’s stunning numbers mate . You need to come up with a plan for The CVT box on my diesel. The Petrol is now returned to the dealer I bought from as it had too many issues. I will be waiting for a text / message from you buddy.


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The output of the speed sensor is a frequency output not voltage.
http://www.turbos.borgwarner.com/files/pdf/efr_turbo_technical_brief.pdf
Page 67.
I have looked into the EFR turbo's as a possible choice if I go to a big turbo on the TT. I thought the 7670 had a BOV on the compressor cover that is used to recirculate air into the intake. some kind of Arduino project taking engine RPM, boost and MAF signals to limit the boost in higher gears when the turbo is spooling. Try and keep on the right side of the surge line.
 
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desertstorm said:
The output of the speed sensor is a frequency output not voltage.
http://www.turbos.borgwarner.com/files/pdf/efr_turbo_technical_brief.pdf
Page 67.
I have looked into the EFR turbo's as a possible choice if I go to a big turbo on the TT. I thought the 7670 had a BOV on the compressor cover that is used to recirculate air into the intake. some kind of Arduino project taking engine RPM, boost and MAF signals to limit the boost in higher gears when the turbo is spooling. Try and keep on the right side of the surge line.
Click to expand...

Sure I have freq to voltage convertor which is used as 0 to 5v input into the ECU so I can log it ;)
Yes BOV it did have but I blocked this off - EGR would offer much more nicer control but would be a pita to map.
 
****** hell bobby singh thats ridiculous power from a single turbo 3 litre TDI, well done, is there any chance you can map my 245bhp A7

I have a DTUK tuning box on @ the mo and was happy @ around 280bhp but i recon you could map mine to 300bhp easy.

It must feel like a monster on the road @ 500bhp is it not trying to pull to one side when you floor it?
 
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Mr AUDI said:
Im not on the forum much so i'm not interested in getting aggrandisement from on an online forum with a group of strangers. My self esteem and personal prowess are intact.
I agree any advance on tuning any of the diesels is great and should be shared and evolved and is exactly what i have done with all my mods including the RS6 brake setup which was not straight forward in and of itself for number of reasons. Do a search.

But to be completely frank and for context on these posts above Bobby Singh's over the last year since (and once again the other day again )starting since i went ahead with the stage 3 tune has often joined in on the BITDI tuning threads and claimed the figures i and others have posted as false and totally impossible ? ? Do a search you'll find the posts.

Now if he had a BITDI that would be a start for one thing. But he proclaims to be ahead of all the big tuners in terms of knowledge application and process of tuning the BITDI diesel and that the tuners are all posting up false figures and that the figures i posted up are false as well. He even claimed that its impossible to tune the BITDI to 450 bhp+ without changing the fuel pump and that the rolling road used by others must be false. It is irritating in a humorous way and i should mention obviously questionable on his part in terms of psychological outlook in logical application and critical thinking.

My background is tuning, starting and problem shooting 800MW Nuclear Turbo Generator sets and 450 MW CCGT Gas Turbines and i travel throughout the world from Brazil to Russia doing so working for myself with repeat business month after month customer after customer and i ma real hands on engineer not some graduate engineer that has never had his hands dirty. If i had logic ofr mental health problems and was into stroking myself believe you me id be quickly found out and removed from the organisations i consult to. The fact that ive been doing this for 15 -20 years tells its own story.

With the background i have being in Nuclear engineering we were trained to spot and stop faulty thinking within individuals and group behavioural psychology in its tracks as the consequences are potentially incredibly serious. You can understand why. We are trained to spot who would jump to conclusions without evidence, process and backup or proclaim to be self stared aggrandising experts etc. When we stop people on these jobs and remove them from the teams or decision making process because of their own behaviours then it often isnt understandably received well. They even accuse the the leaders of bullying sometimes. But tbh it is what is and we have to back up our decision making process with logic, evidence and justification.
Click to expand...
Wow that’s some job you have.i only drive trucks that supply 90% of the everyday items used.its a sh1t worthless job unlike yours.
 
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GarethS4 said:
Wow that’s some job you have.i only drive trucks that supply 90% of the everyday items used.its a sh1t worthless job unlike yours.
Click to expand...
This man is a legend. Your employment contribution is extremely important

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