Bobby Singh
Veteran Member
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
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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