Turbos - options.

[RMC83]

Funny how people can run a stage 2 tune up to 1100Nm with a stock gearbox without a problem.

But when they go to stage 3 and 1200Nm and an upgraded gearbox they seem to break?

Nick

This is what i'm trying to get my head around.

I'm planning for a stage 2.5 type of set up, ie...bigger turbo's & uprated IC, DP's etc...but stock exhaust system + stock gearbox & plan to limit the set-up to Max 850hp / 1100Nm. This should give me a nice linear power curve and a flat torque curve from 3k rpm to redline, which isn't possible with std turbo's and IC...but yes...the question i have is will the stock gearbox cope, given that uprated ones seem to go pop with a set up less than 100hp / 100Nm difference to what i'm planning.

I’d add a water meth kit to that too (Aquamist hfsv3/4). But don’t get it mapped in so engine relies on it, more just to aid cooling. If the engine is coming out i would upgrade the box. You’ll have a reliable 900ps car.
(As reliable as a car pushing 1/3 additional over stock can be)

I'm going to go for the Wagner IC system...so that should help re cooling. I was just going to settle for a stage 2 set up with a valved exhaust system to keep the noise in check (day to day car + kids/wife being the reason why) - but this would be expensive, so i decided to spend that budget on upgraded turbo's instead, and keep the stock exhaust system, mated to the 3" Peron racing Downpipes which will allow significant performance benefit over the entire rev range when working with the Wagner IC system compared to that of a stage 2.

The GB upgrade is just a step too far for me...given the fact that i'm out in Malaysia, so upgraded GB costs inc shipping is not really on the radar for me...just a step too far just now in terms of costs. However, with the planned set up, should more "funds" become available for an upgraded GB, then i would already have the major items installed, to allow for around 1000hp. But for now, i'll have to limit the system based on stock GB. I'm just not sure what that "limit" should be. I'm thinking around the 850hp/1100Nm, but if that's deemed as "pushing it" - then i will dial back to say 820 or 830hp. The peak numbers aren't my main concern...having the bigger turbos c/w wagner IC should allow for a nice straight torque line to redline...which is my real target, as this will make the biggest difference between my proposed set up and a stage 2 running stock turbo's, as the turbo's run out of puff at around 5k rpm & torque drops off a cliff.

The above is just my thinking when trying to come up with a spec that suits me, my use of the car, my budget & location (ie, high daytime temp and humidity)

Cheers
Roy

[RMC83]

JD Engineering tuned an RS6 stage 3 TTE1000 to 973 bhp / 1065 Nm.

I presume the boost was held back to work with a stock gearbox.

There are quite a few stage 2 cars with stock turbos and 'boxes that make that kind of torque.

https://www.audi-sport.net/xf/threads/t ... rs.383918/


76605227_2730989960290747_6034476501678686208_n_zpsnc0kq8gb.jpg

Nick

Do you have any further info on this car, as it seems this set up would be similar to what i'm planning. Look at where the power & torque lines cross...

Seems a lot of power to have using the stock GB, so it would be good to find out more about this car & whether the GB held up okay.

If i dial my set up back to 850hp, i'll probably do a dyno run to try & hit 900+hp just for the fun of it...then dial it back, so maybe this is also what they did & the final set up for the road, in terms of hp was a bit lower.

Anyway...as i said...it would be good to find out more.

Does anyone know the owner?

Cheers
Roy

[welwynnick]

TTE don't sell 850 turbos any more - only the 1000's (and why not?). Stock, 850 & 1000 turbos are all capable of 1100Nm, but the 1000's will hold it longer.

If you're comfortable with 1100Nm, it might interest you to know that 1100 Nm x 6500 rpm = 1004 bhp, which is quite feasible.

Nick

[RMC83]

TTE don't sell 850 turbos any more - only the 1000's (and why not?). Stock, 850 & 1000 turbos are all capable of 1100Nm, but the 1000's will hold it longer.

If you're comfortable with 1100Nm, it might interest you to know that 1100 Nm x 6476 rpm = 1000 bhp, which is quite feasible.

Nick

Thanks...good to know. Might try a quick dyno run to see if i can get to the magic 1000hp.

It's the stock GB that worries me most though going beyond ~820hp.

Cheers
Roy

[chunky79]

Crazy to think C6 owners are worried about the stock box having circa 900bhp going through it. C5 owners worry about the standard 450bhp going through theirs!

[welwynnick]

THT / RSE have just put 1043 PS / 1457 Nm through an uprated ZF 6HP box, though the engine was internally stock. That must be a high water mark for any modified road car.

https://www.facebook.com/pg/THTPerforma ... e_internal

[FUBAR]

THT / RSE have just put 1043 PS / 1457 Nm through an uprated ZF 6HP box, though the engine was internally stock. That must be a high water mark for any modified road car.

https://www.facebook.com/pg/THTPerforma ... e_internal

That is my car, and yes the engine is oem internally. Gen 3 TTH ball bearing turbos (TTH-1050). The tune is conservative.

[welwynnick]

Just Wow.

Do you know how much boost was needed to get to those numbers? Must be about two bar.

THT's usual solution is to use WMI on their high-boost tunes, but they said no WMI on yours.

What sort of air inlet and intercooler do you use?

Nick

[FUBAR]

I have WMI, but it has not been adapted yet. Have Marston IC cores. RSE custom intake and filter. Have all the known boltons available in the market.

Do not know how much boost. My instructions was to make a conservative tune, not to keen on engine out again (been out three times last two years).

A month ago RSE had a similar speced 6 posted on Facebook, that car made 1002ps and 1321Nm with 200 cell cats and 1,8 bar boost. I do not have cats.

[C6Dia]

I have WMI, but it has not been adapted yet. Have Marston IC cores. RSE custom intake and filter. Have all the known boltons available in the market.

Do not know how much boost. My instructions was to make a conservative tune, not to keen on engine out again (been out three times last two years).

A month ago RSE had a similar speced 6 posted on Facebook, that car made 1002ps and 1321Nm with 200 cell cats and 1,8 bar boost. I do not have cats.

Fantastic results.
How does it compare to your old setup?

That is a massive amount of torque!

[FUBAR]

I do not know.

Firstly I never got to experience 977 ps and 1320 Nm as I was supposed to have. It may have made that on the dyno, but never in my possession (long story). That is why I ended up at RSE. So I had a health check on it, and the car dynoed 800 ps and 1000 Nm at RSE. There was nothing wrong with the map, but something was not right (in the end it was bad turbos, third engine out).

Secondly I have not driven the car after the rework at RSE, it is still in Germany and due to the covid-19 situation I can´t collect the car. Currently the map is being made even more conservative and adapted to 98RON. I do not know the end result yet, will be aroud 950-1000 ps and 1300+ Nm.

So when I get it back to Norway, I will know the difference between 800 ps vs 950-1000.

[welwynnick]

That's a sorry tale. It sounds like somebody has let you down.

Was it 977 PS with the original downpipes, and 800 PS with the MRC downpipes that were supposed to give you more power, but for which MRC didn't send you a dyno chart?

Nick

[S4Player]

I do not know.

Firstly I never got to experience 977 ps and 1320 Nm as I was supposed to have. It may have made that on the dyno, but never in my possession (long story). That is why I ended up at RSE. So I had a health check on it, and the car dynoed 800 ps and 1000 Nm at RSE. There was nothing wrong with the map, but something was not right (in the end it was bad turbos, third engine out).

Secondly I have not driven the car after the rework at RSE, it is still in Germany and due to the covid-19 situation I can´t collect the car. Currently the map is being made even more conservative and adapted to 98RON. I do not know the end result yet, will be aroud 950-1000 ps and 1300+ Nm.

So when I get it back to Norway, I will know the difference between 800 ps vs 950-1000.

I remember your car I think, did ricky build it and mrc mapped it ?


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[FUBAR]

That's a sorry tale. It sounds like somebody has let you down.

Was it 977 PS with the original downpipes, and 800 PS with the MRC downpipes that were supposed to give you more power, but for which MRC didn't send you a dyno chart?

Nick

It made 977 PS with BN Pipes 70mm downpipes. On the drive home I found out the GB was slipping. Did not get to test it due to very bad wether. On my trip home the weather cleared up by the border between Germany and Denmark, so I had to floor it for my first time. Gearbox gave up immedatley, lost 3rd, 5th and reverse I think. After some trial and error I figured out how to get past the bad gears, and got home. A month later I drove the car back to REP with a gearbox missing three gears (about 1200 miles).

Since the engine was coming out for the second time I purchased 3inch DPs from MRC because they had been complaining about my exhaust system, and it was limiting power. Anyway, when it went back to MRC for a map tweak I never got a dyno sheet, they where more busy with invoicing the cost of an oil leak on their dyno. Only thing I got out of them was «it’s fine», after that silent treatment.

[FUBAR]

I do not know.

Firstly I never got to experience 977 ps and 1320 Nm as I was supposed to have. It may have made that on the dyno, but never in my possession (long story). That is why I ended up at RSE. So I had a health check on it, and the car dynoed 800 ps and 1000 Nm at RSE. There was nothing wrong with the map, but something was not right (in the end it was bad turbos, third engine out).

Secondly I have not driven the car after the rework at RSE, it is still in Germany and due to the covid-19 situation I can´t collect the car. Currently the map is being made even more conservative and adapted to 98RON. I do not know the end result yet, will be aroud 950-1000 ps and 1300+ Nm.

So when I get it back to Norway, I will know the difference between 800 ps vs 950-1000.

I remember your car I think, did ricky build it and mrc mapped it ?
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Yes, that is correct.