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Johnyboy

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About Johnyboy

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  1. Johnyboy

    Real world mpg and range

    Burnt-gas has a higher specific heat capacity than air, so adding it back to the engine reduces combustion temperatures and therefore NOx emissions. Trying to meet the NOx targets without EGR would dramatically reduce efficiency at higher loads.
  2. Johnyboy

    Reversing camera retrofit kit for G31

    G------- Thanks
  3. Johnyboy

    Reversing camera retrofit kit for G31

    Okay, yes there should be a bit more to it than that. Do you need the whole vin, or just the last bit? Cheers.
  4. Hi, Could you give me a price for a reversing camera retrofit kit please, number 66 21 2 450 878 Thanks John
  5. Johnyboy

    Reverse Camera DIY Retrofit

    It's quite tempting to have a go for £330.
  6. Johnyboy

    Reverse Camera DIY Retrofit

    £400 for the oem camera seemed like a bit of a bargain to me, the genuine retrofit kits available on ebay are 3 times that. They also seem to come with an additional module though (not just camera and loom)
  7. Johnyboy

    Real world mpg and range

    PCV - Positive crankcase ventilation, no impact on fuel consumption EGR - Exhaust Gas Recirculation. Limited impact on fuel consumption, affects power more DPF - Diesel Particulate Filter - Does impact fuel consumption, especially when regenerating. DOC - No impact on fuel consumption SCR - Selective Catalytic Reduction - improves fuel consumption. Diesel exhaust fluid normally relates to cerium based additives used to lower light-off temperature in early DPFs, rather than AdBlue. It's not the after-treatment that limits fuel economy, it's the legislative pollutant limits.
  8. Johnyboy

    Real world mpg and range

    That's about the same as my average daily commute (12-14mpg), but it will go up to 34-35 on a decent motorway run if you stick to the speed limits. It's surprisingly close to my old 535d for long term fuel consumption.
  9. Johnyboy

    Car theft trends

    it's not a bad thing.
  10. Johnyboy

    Car theft trends

    That's always the best tactic, you just to make your neighbours property more attractive than yours. I debadged mine to make people think it was a 520d, but too be honest you'd need to be a bit of a sad-sack to nick an old-man estate car anyway.
  11. Johnyboy

    Reverse Camera DIY Retrofit

    Why did you go for that one? Let me know how you get one, might do something to mine (I've just seen the depreciation, so I think I'll hang on to it!)
  12. Johnyboy

    Reverse Camera DIY Retrofit

    How much does the OE camera and loom cost? Really should have spec’d a camera.
  13. Johnyboy

    Auto Transmission Issue

    Rubbish, it has an appalling tip-in stumble and jerk. Really poor deceleration downshifts, and this curious gear-holding as above. In fact the only time that it's really impressive is the speed of manual changes in sport.
  14. Johnyboy

    Auto Transmission Issue

    I wouldn't have called it scary when it's happened to me, just a bit embarrassing. Happened to me again last night, in comfort mode with shifter on the right. It's just very poor gearbox mapping, bit of a shame but it's hardly the end of the world.
  15. Johnyboy

    MSport Seats

    after about 11 months of driving, I'm not sure that my comfort seats are really all that comfortable either. I've failed to get them into a position that comfortable for more than say 30 mins, didn't ever have that problem with my previous car.
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