4.0 TT big turbo thread

[IowaRS7]

Creating the thread to consider gathering big turbo info in one thread.

Car
Turbos
Tuner
Supporting mods
TCU tune
Dyno, Vbox, , Dragy, 1/4 mile results

Any other general learning or pearls along the way!

[lnferno]

Great thread :) I know this is going to have a slow start, but definitely looking to see what this thread looks like a year from now!

[lnferno]

Paging @Heelbuff. Get your butt in here lol

[HeelBuff]

Paging @Heelbuff. Get your butt in here lol

Pimpin’ and representin’

[MadMaxD]

Subbed.

[brad65ford]

Cool thread.

[nvygw171]

Car: 13' s6

Turbos: SRM hybrid Billet gtx2871r

Tuner: IROZ

Supporting mods: SRM intake, SRM intercooler, injectors, high/low pressure fuel pump,
3" downpipes, possible upgraded clutch packs if needed....(Hopefully will be )

TCU tune: IROZ

Dyno, Vbox, , Dragy, 1/4 mile results:
Still to come car is at IROZ now.

[IowaRS7]

Car: 13' s6

Turbos: SRM hybrid Billet gtx2871r

Tuner: IROZ

Supporting mods: SRM intake, SRM intercooler, injectors, high/low pressure fuel pump,
3" downpipes, possible upgraded clutch packs if needed....(Hopefully will be )

TCU tune: IROZ

Dyno, Vbox, , Dragy, 1/4 mile results:
Still to come car is at IROZ now.

Do you know who IROZ is using to create the tune? Is it UM or Eurocharged? From my understanding they do not do the actual tuning they work with another outfit to make the tune. They have worked with UM on some other platforms and have been quite successful.

[nvygw171]

Do you know who IROZ is using to create the tune? Is it UM or Eurocharged? From my understanding they do not do the actual tuning they work with another outfit to make the tune. They have worked with UM on some other platforms and have been quite successful.

No idea lol. I had been operating on a make 9's happen sorta communication relationship. I'll make sure I ask for more specifics and post em up here.

[cobrario]

No idea lol. I had been operating on a make 9's happen sorta communication relationship. I'll make sure I ask for more specifics and post em up here.

I’ve been told it’s Custom Code

[IowaRS7]

I’ve been told it’s Custom Code

That would make sense as that is who I believe is tuning their RS3 projects correct?

[lapsandwich]

Car: 13' s6

Turbos: SRM hybrid Billet gtx2871r

Tuner: IROZ

Supporting mods: SRM intake, SRM intercooler, injectors, high/low pressure fuel pump,
3" downpipes, possible upgraded clutch packs if needed....(Hopefully will be )

TCU tune: IROZ

Dyno, Vbox, , Dragy, 1/4 mile results:
Still to come car is at IROZ now.

Any details on this intercooler?

[RedheadNV]

Plus 1 on intercooler info?


2013 S6 Quartz gray metallic

[MadMaxD]

That single turbo RS6 is NUTS. Oh god why do I have to be tempted with these big turbo videos?

[cobrario]

That would make sense as that is who I believe is tuning their RS3 projects correct?

That’s correct as well

[dmv2486]

Tte 900 upgrades to the stock frame turbos. Poor pirelli tires never stood a chance.

[dmv2486]

The intercooler upgrade he is talking about is the addition of a larger radiator for the stock intercooler. Which is quite capable.

[cobrario]

Plus 1 on intercooler info?


2013 S6 Quartz gray metallic

Any details on this intercooler?

It's not the HE portion that he's upgrading, its the "charge-cooler" section that the throttle body attaches to- and it should be coming soon.

[lapsandwich]

It's not the HE portion that he's upgrading, its the "charge-cooler" section that the throttle body attaches to- and it should be coming soon.

That’s why I said “inter-cooler” and not heat exchanger.. It was exactly what I was asking about.




An intercooler, or "Charge-Air Cooler", is an air-to-air or air-to-liquid heat exchange device used on turbocharged and supercharged (forced induction) internal combustion engines to improve their volumetric efficiency by increasing intake air-charge density through isochoric cooler.

- Wiki

Tyrol Sport is supposed to be making one as well. A few different options would be nice.
MRC also finished up that Air to air unit, couldn’t find much into at all on it unfortunately.

[nvygw171]

Alright so some changes and news.....

We have decided to go with GTX3071's , Sean has already machined everything and it is all put together.
I switched over to SRM catted downpipes instead of the Russian cat-less.
Confirmed we're doing a complete fuel system minus injectors until we know where they max out at.
Upgraded HX, possibly Mercury will be going with SRM intercooler.
We are shooting for the Srm intercooler being in next week.

The rest is same same for now.

so run down is.....
GTX 3071's
HPFP,LPFP
SRM catted DP's
SRM intake
SRM intercooler

Turning up the wick....

[Ze_Nardo6]

Alright so some changes and news.....

We have decided to go with GTX3071's , Sean has already machined everything and it is all put together.
I switched over to SRM catted downpipes instead of the Russian cat-less.
Confirmed we're doing a complete fuel system minus injectors until we know where they max out at.
Upgraded HX, possibly Mercury will be going with SRM intercooler.
We are shooting for the Srm intercooler being in next week.

The rest is same same for now.

so run down is.....
GTX 3071's
HPFP,LPFP
SRM catted DP's
SRM intake
SRM intercooler

Turning up the wick....

What transmission are you planning to use?

In seriousness, sounds like an all out build. Looking forward to results

[nvygw171]

What transmission are you planning to use?

In seriousness, sounds like an all out build. Looking forward to results

Th400 haha.
nope Same plan. See where she slips get some upgraded clutches/baskets turn up some more, so on and so forth.

[lapsandwich]

Alright so some changes and news.....

We have decided to go with GTX3071's , Sean has already machined everything and it is all put together.
I switched over to SRM catted downpipes instead of the Russian cat-less.
Confirmed we're doing a complete fuel system minus injectors until we know where they max out at.
Upgraded HX, possibly Mercury will be going with SRM intercooler.
We are shooting for the Srm intercooler being in next week.

The rest is same same for now.

so run down is.....
GTX 3071's
HPFP,LPFP
SRM catted DP's
SRM intake
SRM intercooler

Turning up the wick....

Why won’t any one spill the beans on this intercooler? Everyone’s talking about it. Is it a bigger core? Is it a Bigger end tank? Is it two cores squished together like an Oreo ice cream sandwich ?

I’m not asking much here.

[cobrario]

I've been told the SRM cooler will be testing this week, fitment, logging, etc... available to ship as of next week. From what I know the core is very specialized and is coming from the UK so availability may be weeks not days. I don't have any other details to offer from a cost standpoint but it likely will not be cheap, its a very specialized manufacture process w/limited producion, that said I may have some before and after IAT info from a buddy of mine in the coming weeks - I'll relay what I know when I know it.

[brad65ford]

I've been told the SRM cooler will be testing this week, fitment, logging, etc... available to ship as of next week. From what I know the core is very specialized and is coming from the UK so availability may be weeks not days. I don't have any other details to offer from a cost standpoint but it likely will not be cheap, its a very specialized manufacture process w/limited producion, that said I may have some before and after IAT info from a buddy of mine in the coming weeks - I'll relay what I know when I know it.

I've talked to Sean about these, looking forward in learning more when he has it completed.

[nefkntym]

Looking forward to updates, it looks like this thread is going to get exciting.

[Tom Web]

Greetings,

I got some bad news this week. A blown turbo on my 2015 S8 and it is out of warranty by 1000 miles. I am considering at upgrading to TTE 800s and cast downpipes at the same time instead of going with stock replacements. I currently have an APR stage 1 tune on the car. Some questions I have for you experienced turbo engine builders. Does anyone have experience with The Turbo Engineers? If so TTE800 vs TTE9XX? From what I understand the TTE9XX requires enhanced cooling for them to work properly. Lastly, any pointers from those of you who have upgraded your 4.0. Thanks in advance for any advice.

[NardoRS7]

Greetings,

I got some bad news this week. A blown turbo on my 2015 S8 and it is out of warranty by 1000 miles. I am considering at upgrading to TTE 800s and cast downpipes at the same time instead of going with stock replacements. I currently have an APR stage 1 tune on the car. Some questions I have for you experienced turbo engine builders. Does anyone have experience with The Turbo Engineers? If so TTE800 vs TTE9XX? From what I understand the TTE9XX requires enhanced cooling for them to work properly. Lastly, any pointers from those of you who have upgraded your 4.0. Thanks in advance for any advice.

How often were you changing your oil?

[Hofahome]

Greetings,

I got some bad news this week. A blown turbo on my 2015 S8 and it is out of warranty by 1000 miles. I am considering at upgrading to TTE 800s and cast downpipes at the same time instead of going with stock replacements. I currently have an APR stage 1 tune on the car. Some questions I have for you experienced turbo engine builders. Does anyone have experience with The Turbo Engineers? If so TTE800 vs TTE9XX? From what I understand the TTE9XX requires enhanced cooling for them to work properly. Lastly, any pointers from those of you who have upgraded your 4.0. Thanks in advance for any advice.

Why TTE? Given the insane price for them and meh results, I'd at least look into another hybrid setup like the gtx internals.


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[IowaRS7]

With more options hitting the scene for bigger turbos and tuning as well, thought I would bring this back up to gather more info. I am personally considering some bigger turbos so wondering what ppl are seeing between the GTX28 and GTX30 options as well as ECU and TCU tuning to go along with them. With APR, Eurocharged, HP Tuners, UM and others doing some tuning, it will be interesting to see results. Also seeing more cooling options to help take advantage of the power potential. I have this feeling that there are a number of ppl doing some things off the grid and we are going to see some cool stuff very soon?

[HeelBuff]

With more options hitting the scene for bigger turbos and tuning as well, thought I would bring this back up to gather more info. I am personally considering some bigger turbos so wondering what ppl are seeing between the GTX28 and GTX30 options as well as ECU and TCU tuning to go along with them. With APR, Eurocharged, HP Tuners, UM and others doing some tuning, it will be interesting to see results. Also seeing more cooling options to help take advantage of the power potential. I have this feeling that there are a number of ppl doing some things off the grid and we are going to see some cool stuff very soon?

My experience is that the software has not caught up with the hardware. My car is up to speed with bleeding edge hardware from hybrid turbos, waste gates, actuators, cooling and on and on, but it’s slower than it was when stock because there’s no tune to make it all work. Soon, I’m told.

[IowaRS7]

My experience is that the software has not caught up with the hardware. My car is up to speed with bleeding edge hardware from hybrid turbos, waste gates, actuators, cooling and on and on, but it’s slower than it was when stock because there’s no tune to make it all work. Soon, I’m told.

Thanks for sharing that. The software is what is holding me back at this point. Looking at adding cooling and infrastructure that will add benefits to stock setup as well as larger turbos when tuning is more readily available and proven. I don’t have a custom tuning shop nearby with an AWD dyno so I need a package deal like a Stage III kit from APR or something. Hoping that the work Sean is doing with APR ends up going that route.

[s4nicetry]

Thanks for sharing that. The software is what is holding me back at this point. Looking at adding cooling and infrastructure that will add benefits to stock setup as well as larger turbos when tuning is more readily available and proven. I don’t have a custom tuning shop nearby with an AWD dyno so I need a package deal like a Stage III kit from APR or something. Hoping that the work Sean is doing with APR ends up going that route.

A lot of custom tunes can be done remotely and just require you to run logs and email them back and forth then download the updated files, no dynos necessary. Not sure which tuner could offer that specifically for our cars at this point, but the tech is there.

[NardoRS7]

My experience is that the software has not caught up with the hardware. My car is up to speed with bleeding edge hardware from hybrid turbos, waste gates, actuators, cooling and on and on, but it’s slower than it was when stock because there’s no tune to make it all work. Soon, I’m told.

This is absolutely true, and it is true for all platforms (including electronics). Hardware is always developed first with software coming in later. I will say though, that depending on the hardware you choose, you’re not guaranteed to be “quicker” than stock because stock is already very quick (from 0-60). What we need to be able to do is find a way to keep our 0-60 (and 60’) close to what we have stock but improve our top end. My favorite part about this car is how we get so much torque at such low RPM and you can actually use it (being AWD). I’m curious to know what that big turbo RS6 runs in the 1/4 mile.

[IowaRS7]

We know Eurocharged has figured something out to hit 10.00 at 140mph with the bigger turbos and other goodies.

[HeelBuff]

We know Eurocharged has figured something out to hit 10.00 at 140mph with the bigger turbos and other goodies.

Yes. I’m linked up with APR and they haven’t yet tackled the project.

[IowaRS7]

Car: 13' s6

Turbos: SRM hybrid Billet gtx2871r

Tuner: IROZ

Supporting mods: SRM intake, SRM intercooler, injectors, high/low pressure fuel pump,
3" downpipes, possible upgraded clutch packs if needed....(Hopefully will be )

TCU tune: IROZ

Dyno, Vbox, , Dragy, 1/4 mile results:
Still to come car is at IROZ now.

Any updates?

[nvygw171]

Any updates?

It's now at eurocode waiting on tune.

[IowaRS7]

It's now at eurocode waiting on tune.

In for updates on some of the big turbo tuning projects!!

[16AudiS6]

Hoping APR comes out with a revision for the stage 3 tune sometime soon...I know lots of people are waiting on it...