IanH's C6 RS6 - 955hp & 1200nm - Updated 09 Feb '24

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IanH755
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Re: IanH's C6 RS6 900+ spec

Post by IanH755 » Mon Jul 16, 2018 12:37 pm

Just back at Unit20 having a post rebuild inspection before I head down to MRC on Wednesday and after a 60 mile motorway run I got this MPG reading. Not bad for 900hp :D although I realise it's an ECU thing with my non-OEM injectors.

Image
***OLD*** Daytona C5 RS6 Avant - MRC'd - 500HP & 820NM (PistonHeads Link).

***NEW*** Daytona C6 RS6 Avant - MRC'd - 955HP & 1200NM (PistonHeads Link)

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IanH755
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Re: IanH's C6 RS6 900+ spec

Post by IanH755 » Wed Jul 18, 2018 1:27 pm

So back from MRC with a full bill of health and just over 870hp which wasn't helped by the I/C's poor thermal abilities on a Dyno. We made an extra 30ps (25hp) from the first run just by letting the car cooldown so that the ambient temps were 20'c rather than 50'c when it arrived which just shows how poor they are in static air.

Doug is really trying to convince me to get the Marstons for their much better flow (my KWE's are slightly laggier in comparison too) and better thermals yet I'm still struggling with the £3200+ price however Doug mentioned that Christer on here, who has an almost identical spec to mine but with Marstons, made over 70hp more than my current figure, had more torque, less lag, more revs (7k vs 6.5k) and better intake temps all from them. I'm next back in the UK around January so I may eventually bite the built and get a set (through gritted teeth admittedly).

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Last edited by IanH755 on Wed Jul 18, 2018 1:33 pm, edited 1 time in total.
***OLD*** Daytona C5 RS6 Avant - MRC'd - 500HP & 820NM (PistonHeads Link).

***NEW*** Daytona C6 RS6 Avant - MRC'd - 955HP & 1200NM (PistonHeads Link)

don0301
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Re: IanH's C6 RS6 900+ spec

Post by don0301 » Wed Jul 18, 2018 1:29 pm

In for a penny Ian ;)

You've almost got as much torque as me now ;)
Ferrari 488 Spider
C6 RS6
E46 M3 convertible
Nissan 200sx mk 2
Vauxhall Senator
Ford Sierra 1.8LX
Peugeot 205 1.9 GTi
Vauxhall Belmont SRi
Vauxhall Astra 1.3
Vauxhall Astra 1.3
1st car Datsun 120 FII Lime green....yeah :shock:

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IanH755
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Re: IanH's C6 RS6 900+ spec

Post by IanH755 » Wed Jul 18, 2018 1:35 pm

The annoying thing is I'd buy them in a heartbeat if they were closer to what I considered a more "reasonable" price, because they are awesome, but as a tight semi-Northerner it just makes my skin itch paying that much - which is again ridiculous when you consider what I've already spent :D
***OLD*** Daytona C5 RS6 Avant - MRC'd - 500HP & 820NM (PistonHeads Link).

***NEW*** Daytona C6 RS6 Avant - MRC'd - 955HP & 1200NM (PistonHeads Link)

bam_bam
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Re: IanH's C6 RS6 900+ spec

Post by bam_bam » Wed Jul 18, 2018 4:17 pm

I kinda agree. A pair of (in the grand scheme of things) smallish intercoolers shouldn't be £3,200, they just shouldn't.
Now, the C7's new AM intercooler looks like it might be worth closer to that figure.

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IanH755
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Re: IanH's C6 RS6 900+ spec

Post by IanH755 » Wed Jul 18, 2018 7:04 pm

Exactly, something designed from scratch with all the associated R&D and its completely unique vs OEM end tanks welded to a new core (to my mind at least) - but they're just.......so......damn.....good!
***OLD*** Daytona C5 RS6 Avant - MRC'd - 500HP & 820NM (PistonHeads Link).

***NEW*** Daytona C6 RS6 Avant - MRC'd - 955HP & 1200NM (PistonHeads Link)

bam_bam
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Re: IanH's C6 RS6 900+ spec

Post by bam_bam » Wed Jul 18, 2018 9:14 pm

Do Marston make them in-house?
No matter where you go, there you are.

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Golfather
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IanH's C6 RS6 900+ spec

Post by Golfather » Wed Jul 18, 2018 9:17 pm

IanH755 wrote:
Image
Thats not bad for the Kwe's
For comparison mine did 867, stock everything just the ttes
Your torque seems to be holding better through the revs although lag low down is evident compared to stock.
But power drops off early?

Image



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Re: IanH's C6 RS6 900+ spec

Post by welwynnick » Sat Feb 16, 2019 11:24 pm

Golfather wrote:
Wed Jul 18, 2018 9:17 pm
Thats not bad for the Kwe's
For comparison mine did 867, stock everything just the ttes
Your torque seems to be holding better through the revs although lag low down is evident compared to stock.
But power drops off early?
Image
Those are nice power and torque curves.

Are you really just stock plus TTE850 and (presumably) ECU & TCU tune?

Or do you at least have filters, downpipes, HPFP etc?

Cheers, Nick

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Re: IanH's C6 RS6 900+ spec

Post by welwynnick » Sun Feb 24, 2019 9:02 pm

IanH755 wrote:
Wed Jul 18, 2018 1:27 pm
So back from MRC with a full bill of health and just over 870hp which wasn't helped by the I/C's poor thermal abilities on a Dyno. We made an extra 30ps (25hp) from the first run just by letting the car cooldown so that the ambient temps were 20'c rather than 50'c when it arrived which just shows how poor they are in static air.
Hi Ian,

Do you know how much boost you're using to get those power and torque figures?

Cheers, Nick

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Re: IanH's C6 RS6 900+ spec

Post by ThatRS7 » Mon Feb 25, 2019 12:31 pm

Absolutely epic build !

The noise this thing must make !
16' Mystic Blue RS7 - Stock.

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IanH755
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Re: IanH's C6 RS6 900+ spec

Post by IanH755 » Tue Feb 26, 2019 6:31 pm

welwynnick wrote:
Sun Feb 24, 2019 9:02 pm
Hi Ian,

Do you know how much boost you're using to get those power and torque figures?

Cheers, Nick
Sorry, I've got no idea.

I'm sure I logged it via VCDS when it was just done and I remember a figure of 1.2bar but I've had so many turbo cars that I might just be badly mistaken and thinking about something else.

I'm back in the UK in a few months so I can relog it and get back to you.
***OLD*** Daytona C5 RS6 Avant - MRC'd - 500HP & 820NM (PistonHeads Link).

***NEW*** Daytona C6 RS6 Avant - MRC'd - 955HP & 1200NM (PistonHeads Link)

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Re: IanH's C6 RS6 900+ spec

Post by welwynnick » Fri Mar 01, 2019 5:05 pm

Thanks Ian

I was supposed to be going to view an RS6 today, but I'm looking after a poorly son. I used to have a tuned Mercedes S600 BiTurbo with 600bhp / 1000Nm, but two wheel drive was a bit limiting, and I was really looking forwards to walking in your footsteps.

Nick

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IanH755
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Re: IanH's C6 RS6 900+ spec

Post by IanH755 » Wed Apr 03, 2019 3:37 pm

Just a quick update while I'm back in the UK for a few weeks -

I'm off to Scotland for a bit of NC500 action, I'm struggling to find MPS4S tyres as every website says "yes in stock" and then cancels/refunds 3 days later when they can't get any (problem at Michelin), my right rear brake heatshield detached during a "spirited" drive (same as the rear left) making a right racket so I've taken that off and I've ordered all the bits for the next servicing/MOT etc in July.

Oh, and the car is still fast as balls! :D
***OLD*** Daytona C5 RS6 Avant - MRC'd - 500HP & 820NM (PistonHeads Link).

***NEW*** Daytona C6 RS6 Avant - MRC'd - 955HP & 1200NM (PistonHeads Link)

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Re: IanH's C6 RS6 900+ spec

Post by Fatneck73 » Thu Apr 04, 2019 7:02 am

👍

Are you here long enough for Beaulieu on 21st buddy?

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