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4.2 sc tuning advice please

Discussion in 'Range Rover' started by ozzyboy, Feb 11, 2013.

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  1. ozzyboy

    ozzyboy Active Member

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    how much of a power gain can i expect from a 4.2 supercharger chip tune
    where would be a good place to go
     
  2. Saint.V8

    Saint.V8 Dyed-in-the-wool 100% RR Junkie

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  3. 2.0_hippo

    2.0_hippo Well-Known Member

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    4.2 supercharged ??
    Wtf

    Even then, I thought a supercharged model was quick enough !
     
  4. ozzyboy

    ozzyboy Active Member

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    thanks
    which section is it under
     
  5. Saint.V8

    Saint.V8 Dyed-in-the-wool 100% RR Junkie

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    Try www.fullfatrr.com - LZ is just catching up on the L322 - whereas that forum is more geared toward L322 Modding....
     
  6. 2.0_hippo

    2.0_hippo Well-Known Member

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    Linking other forums !!!

    You should be ashamed of yourself lol
     
  7. eightinavee

    eightinavee Well-Known Member

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    Unless you have VERY deep pockets you need to think again.What is the S/C output ? From memory around 380bhp - more than enough for the transmission to cope with.
    If you want to go fast, lose two wheels and get some real fun for little money - it will be reliable too.
     
  8. Saint.V8

    Saint.V8 Dyed-in-the-wool 100% RR Junkie

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    I know. don't hate me for being helpful.....:eek:
     
  9. ozzyboy

    ozzyboy Active Member

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    i was thinking along the lines of pulleys and remap
     
  10. wammers

    wammers STILL BREATHING. Donater

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    I was thinking more along the lines of WHY?
     
  11. Saint.V8

    Saint.V8 Dyed-in-the-wool 100% RR Junkie

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    :hysterically_laughi:behindsofa:
     
  12. ozzyboy

    ozzyboy Active Member

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    i was thinking along the lines of why not
     
  13. wammers

    wammers STILL BREATHING. Donater

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    OK carry on. Is ya a gangsta?
     
  14. StuckAgainSteve

    StuckAgainSteve Well-Known Member

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    I upped the boost of both of my Jag XJRs using a smaller supercharger pulley from powerhouse in Sheffield - they do a larger lower pulley, but I went for the upper (charger) pulley coz they are easier (I thought!) to change and the performance difference is marginal - a bit of heating was required to get the old pulley off and I had to take a dremel to the supercharger casing for clearance. "Chipping" does next to nothing for these engines as the boost is limited by the mechanically determined supercharger spin-speed not artificially like many turbos. Added about 40bhp (allegedly) with noticeably better urge in the midrange. Fuel consumption worsened by 2-3 mpg regardless of how I drove it/them. Dunno what the job is like on a s/c engined Rangie. I've got a fully equipped workshop, I suspect the lower pulleys might be easier for the DIYer. There are many similar pulleys on the e of Bay.

    Unlike (usual) me, I didn't rolling road the cars around the mods, so I only had my backside dynometer - the difference was enough to mean I could slowly pull away from my friend's M5 where as before we were neck-and-neck (when he didn't fluff his start up) - the cars certainly felt brisker and the supercharger whine was even louder than normal. The older XJR (completely unprepped) dropped from constant 13.8s standing quarters at Santa Pod to 13.6s - doncha love Autos? Consistency!

    If you want to make the car much quicker, then nitrous is the only realistic option - then save up for a new gearbox as the torque will kill it. Better off getting the same engine in a different car - buy a Jag XJR/XKR if you want acceleration!
     
  15. Wanagetmuddy

    Wanagetmuddy New Member

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    Fairplay you wanting more power out the SC but dont you think you have bought the wrong car!!!

    I know the sc is faster than the 4.4 v8 but jeez more power to that, its hard enough keeping the rangie in good working order never mind putting more stress to it.


    Im all for modifying but the rangie is the only car I have kept to the original bar the gas conversion.
     
  16. rasheed

    rasheed Well-Known Member

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    Just some perspective:

    1HP

    [​IMG]
     
  17. Datatek

    Datatek Well-Known Member

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    That's a big V8 type horse, smaller ones have less power:rolleyes::):):)
     
  18. wammers

    wammers STILL BREATHING. Donater

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    Sorry to hijack the thread but does anyone have any tuning tips for my Buggati Veyron? It's getting a bit sluggish above 235 MPH.
     
  19. Datatek

    Datatek Well-Known Member

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    Run it on a methanol / 60% nitro methane mix and add nitrous injection, that should fix it until the engine blows:eek::D:D:D
     
  20. wammers

    wammers STILL BREATHING. Donater

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    Thanks mate will get that sorted. But it uses a lot of fuel what are your views on the magnetic clip on fuel saver devices?
     
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