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#11
21st December 2012, 04:15 PM
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Audi will only find the code if they really want to – or Audi UK press them to look into it before authorising a claim, they would probably be more inclined to look on a performance Audi though. Plenty of mapped cars go in for warranty work and come out fine too. What you need is to know a friendly master tech at an Audi dealer.
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2009 Audi RS 6 Saloon V10 - 420mm Ceramics, Keyless, Soft Close, Adaptive Cruise, Glass Sunroof, Blinds, Twin Pane & UV, Freeview & DAB, High Beam Assist, MTM bits, Audi Exclusive Bits, MRC, Milltek, GYEF1 ASY2's, Bluetooth streaming music to AMI mod - 753 PS/1021 NM 2016 Audi S3 Saloon, Sepang, S-Tronic - B&O, Tech Pack etc... Company Car 1995 Audi A8 4.2 V8 quattro Sport - Bose, Solar, Blinds 
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#12
21st December 2012, 08:09 PM
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Notice they don't do the 4.2 petrol engine though
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Andy. Current cars: BMW i4 M-Sport Peugeot 207 (the sons) Triumph Daytona 675 (2017 reg) =========================== Gone but not forgotten Ford Focus ST-2 Mk3 (the wifes) (stolen Oct 2023) 1972 T2 Bay Window Camper (Slow) Audi TT Mk1 225 - now with coil-overs and a 7inch touchscreen infotainment centre 2003 A8 Sport 4.2 (with ACC & LPG) (Feed up with all the issues so passed it on to a forum member) 2000 A8 FL QS 4.2 (with RNS-E - Nice  ) (Engine poorly so sold on to be brought back by someone who has the time)
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#13
22nd December 2012, 01:40 AM
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To answer your question Ian.. I think the box increases the pressure at the fuel rail to increase throttle responce and also if its turbocharged creates a delay in your pressure from the turbo being regestered just enugh to increase the psi by about 2-4psi before the wast gate opens... This cobination is what gives the extra power/torque ect and also better mpg as the engine dose not work as hard to maintain the same speed.. For example after a tuning box was fitted on a touran i had it went from 55mp to 64 mpg and i hardly ever took it out of 6th gear where as before i was always up and down the box... The torque is the real bonus for mpg .. And incresed pressure at the fuel rail gives a great throttle responce
If im wrong ooppssii
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