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TDI Power Enhancements Discussions about increasing the power of your TDI engine. i.e. chips, injectors, powerboxes, clutches, etc. Handling, suspensions, wheels, type discussion should be put into the "Upgrades (non TDI Engine related)" forum. Non TDI vehicle related postings will be moved or removed. Please note the Performance Disclaimer.

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Old January 21st, 2018, 13:12   #1
Bobby Singh
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Default Audi A4 3.0TDI 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

Thanks to Ruben for all his work on the turbo top job.



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









Smoke test Video:

https://youtu.be/kX7h95M7adI
(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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Last edited by Bobby Singh; January 21st, 2018 at 13:20.
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Old January 21st, 2018, 16:59   #2
[486]
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Nice!
Love how clean it's running.
Very interested to see how the alloy turbine does in the oxidizing exhaust stream.
Also interested in using compressor bleed air to avoid surge. Works on big aircraft engine compressors, no reason it wouldn't on these compressors.

Last edited by [486]; January 21st, 2018 at 17:02.
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Old January 21st, 2018, 22:07   #3
Macradiators.com
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Great result! Congrats! Good to know the tiptronic is holding the torque.
Any remap to it, or just the normal service filter and oil?
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Old January 21st, 2018, 22:42   #4
iModAMD
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Very nice!
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Old January 22nd, 2018, 00:19   #5
raffshore
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great result bobby !!
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Old January 22nd, 2018, 02:33   #6
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Good going, these V6's must have much better porting than the 2.0's!
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Old January 22nd, 2018, 03:54   #7
Bobby Singh
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Quote:
Originally Posted by [486] View Post
Nice!
Love how clean it's running.
Very interested to see how the alloy turbine does in the oxidizing exhaust stream.
Also interested in using compressor bleed air to avoid surge. Works on big aircraft engine compressors, no reason it wouldn't on these compressors.
Thanks - yep I actually hate smoke and its my everyday ride so needs to be road friendly.

Quote:
Originally Posted by Macradiators.com View Post
Great result! Congrats! Good to know the tiptronic is holding the torque.
Any remap to it, or just the normal service filter and oil?
Mac - the 6hp 28 is really strong - stock sw. Only thing I was service it maybe 20k ago.

Quote:
Originally Posted by iModAMD View Post
Very nice!
Thanks

Quote:
Originally Posted by raffshore View Post
great result bobby !!
Cheers Raf

Quote:
Originally Posted by ryanp View Post
Good going, these V6's must have much better porting than the 2.0's!
Thanks Ryan - yes goes very well. Regarding head I suspect they are same but I have no flow data to confirm.
But I wouldn't like to try this on stock valve springs.
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Last edited by Bobby Singh; January 22nd, 2018 at 05:25.
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Old January 22nd, 2018, 03:58   #8
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your sig needs an update!
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Old January 22nd, 2018, 04:52   #9
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Congratulations!
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Old January 22nd, 2018, 05:00   #10
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Congrats! Great Autobahn car. Probably give a stock RS6 a good run and go up to like 333kmh. How far are you pushing it in RPM? Plot stops at ~4600rpm.
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Old January 22nd, 2018, 05:11   #11
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Congrats! I see rpm sensor on the turbo, care to share the figures you see?
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Old January 22nd, 2018, 05:12   #12
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Nice work Bobby
May I ask what boost and rail pressure you are running now, still a cp3-110 pump?
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Old January 22nd, 2018, 05:55   #13
Bobby Singh
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Thanks guys - power is flat, but in S I can change just at 5k
Turbo speed voltage needs confirmation as the reading is too low at the moment.
CP3 R90 hpfp
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Old January 22nd, 2018, 11:32   #14
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really nice build and a lot of power for the A4 it"s a great sleeper.
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Old January 22nd, 2018, 18:07   #15
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I really like the thought that the "off the shelf" s300v with similar inducer was not quite good enough.

Ground breaking work done here and thank you for sharing !
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