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A8 / S8 Generic Posts All other useful info |
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#1
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Rolling Road interested to know
Has anyone had their S8 D2 on a rolling road or mapped, did it make stock power figures? or less?
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Audi S8 D2 #ronin - Cedar Green Abarth 500 Esseesse - Sold RS6 Avant Black - Stolen Mercedes Benz CLS 500 - Sold Corsa VXR Nurburgring - Sold RS6 Avant Grey - Sold Seat Leon Cupra R - Sold |
#2
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Not my S8, but I did have my first D2 A8 4.2 remapped.
I was invited down to Superchips headquarters on a training day, due to my automotive development associations (long story), and got a free remap as a result. Bearing in mind these were Superchip's best remappers, the first attempt actually lost about 10bhp. After several attempts they managed an increase of about 5bhp, which of course was barely noticeable on the road.
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Mark ------------------------------------------------------ 2002 FE S8 Ebony Black Pearl ------------------------------------------------------ ------------------------------------------------------ Cars Owned: The Tesla Era: 2020 Model S Performance Ludicrous+ (present) (Black, with all black premium interior and carbon fibre décor, 21" sonic carbon twin turbine wheels and FSD capability) The Audi Era: '97 A8 4.2 (Ming Blue) --> '96 A8 4.2 QS (Dark Green) --> '02 FE S8 (present) The Citroen Era: '84 BX 1.6 RS --> '89 BX 1.9 DTR Turbo --> '94 XM 2.0L Turbo --> '96 XM 2.0L Turbo Exclusive --> '00 Xantia Activa 2.0L Turbo The Banger Era: '76 1.2L Lada VAZ-2101 (Ruski Fiat 124) --> '80 1.7L Morris Ital HL, finished in Ermine White and Rust Last edited by moltuae; 7th September 2017 at 06:37 AM. |
#3
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I had my D2 on the dyno at MRC, made factory 355 hp with 120k miles on the clock, I was very surprised was expecting a lot less. The often quoted 360hp is actually in ps, its 265kw in the manual.
Last edited by Goran; 6th September 2017 at 09:59 PM. |
#4
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Goran thats good results, i've heard MRC are the guys to use for mapping etc, did my stage 2 rs6 c5 before i bought it and went very well, do you think they could do much with an S8 D2? I suppose it would confirm if the car is healthy was it stock your car?
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Audi S8 D2 #ronin - Cedar Green Abarth 500 Esseesse - Sold RS6 Avant Black - Stolen Mercedes Benz CLS 500 - Sold Corsa VXR Nurburgring - Sold RS6 Avant Grey - Sold Seat Leon Cupra R - Sold |
#5
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Quote:
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Audi S8 D2 #ronin - Cedar Green Abarth 500 Esseesse - Sold RS6 Avant Black - Stolen Mercedes Benz CLS 500 - Sold Corsa VXR Nurburgring - Sold RS6 Avant Grey - Sold Seat Leon Cupra R - Sold |
#6
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I know a few garages with rolling roads. In fact I used to repair and maintain their rolling roads for them, but most of those aren't 4-wheel dynos. I do know one owner of a 4-wheel dyno but it's never been properly maintained or calibrated so I wouldn't trust its accuracy. I am considering investing in a new 'sportier' exhaust system some time in the next year or two, so I might be tempted to pay for a 'before and after' roll, if I can find a local garage with a decent 4-wheel dyno.
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Mark ------------------------------------------------------ 2002 FE S8 Ebony Black Pearl ------------------------------------------------------ ------------------------------------------------------ Cars Owned: The Tesla Era: 2020 Model S Performance Ludicrous+ (present) (Black, with all black premium interior and carbon fibre décor, 21" sonic carbon twin turbine wheels and FSD capability) The Audi Era: '97 A8 4.2 (Ming Blue) --> '96 A8 4.2 QS (Dark Green) --> '02 FE S8 (present) The Citroen Era: '84 BX 1.6 RS --> '89 BX 1.9 DTR Turbo --> '94 XM 2.0L Turbo --> '96 XM 2.0L Turbo Exclusive --> '00 Xantia Activa 2.0L Turbo The Banger Era: '76 1.2L Lada VAZ-2101 (Ruski Fiat 124) --> '80 1.7L Morris Ital HL, finished in Ermine White and Rust |
#7
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Also having test driven RS4s, an RS6 and a Tesla made me realise if I want a huge power jump I can feel I have to get a different car. Currently I am very happy with the D2, I have accepted it for what it is. The other, perhaps easier way to get a bit more noticable oomph is to lose weight, for example lightweight battery could save 20kg, custom exhaust could lose around 15kg, lightweight front discs around 7kg, rears around 3kg. Lighter alloy wheels could lose up to 25kg if you count the spare too, depending how much you are prepared to spend. Switching to manual seats for example Audi TT seats could lose another 20kg. However I have partially given up on this too and I even bought a pair of TT seats, now gathering dust in the shed. To make the D2 a much faster car would take something radical like swapping in an RS6 4.2 engine, manual trans, etc. Or going all out reducing weight and maxing the power of the stock engine. I am guessing either route would easily cost over £10k Last edited by Goran; 8th September 2017 at 06:55 PM. |
#8
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Conan (the Librarian) Watch it if you dare Currently, 2000 S8, Merlin Purple, Leather Pack 1, Winter Pack 1, SPAX adjustable suspension, AP Racing 6 pot front caliper, 385mm fully floating disks, EBC Yellow Stuff Pads, Black Diamond grooved rear disks and predetor pads, D2 Doctors Brake Block. 1997 4.2 A8SQ - the Projekt. 12 years and ongoing! 1997 4.2 A8SQ - Ming Blue. Restoration sat waiting; saved from the Scrapyard 2003 C5 Allroad 4.2Q - Cobolt Blue. Towing car. Laid up awaiting manual conversion. 2005 C5 Allroad 2.5TDi FE - Grey - Workhorse. 2015 Q3QS SLine - Daytona Grey. Lots of extras! Long Haired Admirals cutter. Previously 2003 C5 A6 1.9TDI FWD - Loaner from D2 Doctor Lifex 1997 S8 - Ming Blue. Loaned out and written off. I loved that car. My first engine swap after cambelt failure. 1996 4.2 A8SQ - Ming Blue. 178k on a cambelt! Trader's 8. Delivered to A8Parts at Lifex. 2003 2.8 A8SQ - powder blueish. Fill in for a while. Sold on. 1998 1.8T A4 Avant FWD. Ming Blue (there's a theme here), PEX for the 97 S8. And a list of non VAG going back 40 years before I saw the light. |
#9
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I did think of Nitrous oxide and while it is fairly inexpensive to install the usage costs are too high.
So I looked at alternative. You could use compressor part of turbo hooked up to electric motor to give you on demand boost. Initial outlay will probably be higher but running costs very little. It is a while since I looked at it so things may have improved now. but I seem to remember that about £750 investment would give you 50% more power for 2 minutes with 30 minute re-charge time with which is compareable to 11lb NO2 bottle at about £50 for the same 2 minutes of boost.
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Currently 8less 2011 Q7 S Line 3.0TDI, 2016 Tesla Model S 90D 8 history: 2006 A8 Sport 4.2TDI quattro SOLD, 1997 S8, reached end of life with gearbox failure Last edited by ainarssems; 8th September 2017 at 10:32 PM. |
#10
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Interesting idea, I like it
I assume the electric motor would run off a separate battery no the alternator, hence the re-charge time? Only other question, would the engine be able to take it? Lol, sorry, not the only question, would you still need to intercool the air? Looks like Borg warner already have something. https://www.borgwarner.com/docs/defa....pdf?sfvrsn=14 Last edited by Goran; 11th September 2017 at 11:26 AM. |
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