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Thread: need a bit of oomph!!

  1. #1
    Regular Member jimbo1987's Avatar
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    Default need a bit of oomph!!

    ive got a 1.8 ls and have done airbox mod full service new super 4 plugs and changed dodgy thermostat. noticed difference foe the better with all these dont tink it had been serviced properly as original vauxhall fuel filter was still on at 95,000k.
    anyway what else can do to give it more power without spending stupid money on cams or wat not
    cheers

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    Regular Member Ste's Avatar
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    Vehicle : Jaguar XF 3.0D V6

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    Nothing, really to be honest.

    The 1.8 isn't very 'tuneable'.

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    Regular Member accveccysriturbo's Avatar
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    Sell it and buy a 2.0T

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    Regular Member jimbo1987's Avatar
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    i would do but the insurance would screw me over!!

  5. #5
    VIP-Member Das's Avatar
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    Lightening it would be the most cost effective. Remove the spare wheel, boot carpet and rear seat, remove about 20Kg. The 1.8 is the lightest in the Vec C range as it is. Whilst not very practical it is the most cost effective. You could try a Cone Filter like a K&N 57i, the noise off it is worth 10 bhp in anyone's book. Handy with a set of spanners? Take the Manicat off and knock the insides out of it(or buy a stainless steel decat manifold) bound to be good for about 5-6bhp. Not sure if you would pass an MOT though. Cutting out the centre box would release a couple of more bhp and maybe give it a nice sound too. Do all the above then add a set of iridium spark plugs then get it mapped, 8-10bhp costs about £300. 50bhp shot of NOS would also be an option, not sure what the costs of that are, but quick and easy to achieve. Mind you youd no doubt need a clutch upgrade to cope with that.

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    Regular Member jimbo1987's Avatar
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    Quote Originally Posted by DasArab View Post
    Lightening it would be the most cost effective. Remove the spare wheel, boot carpet and rear seat, remove about 20Kg. The 1.8 is the lightest in the Vec C range as it is. Whilst not very practical it is the most cost effective. You could try a Cone Filter like a K&N 57i, the noise off it is worth 10 bhp in anyone's book. Handy with a set of spanners? Take the Manicat off and knock the insides out of it(or buy a stainless steel decat manifold) bound to be good for about 5-6bhp. Not sure if you would pass an MOT though. Cutting out the centre box would release a couple of more bhp and maybe give it a nice sound too. Do all the above then add a set of iridium spark plugs then get it mapped, 8-10bhp costs about £300. 50bhp shot of NOS would also be an option, not sure what the costs of that are, but quick and easy to achieve. Mind you youd no doubt need a clutch upgrade to cope with that.
    cheers dats what i was looking for usefull info!!

  7. #7
    VIP-Member Das's Avatar
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    Cheap as chips mod, buy a hole saw for a power drill and drill some holes in the air box to allow extra air in and fit a K&N panel filter. Vauxhall G Man has one for sale in the For Sale section.
    http://vectra-c.com/forum/showthread.php?t=155562

  8. #8
    Ex Vec-C Admin Ian-Highlander's Avatar
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    Vehicle : Insignia Tourer

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    Engine : 2.0 CDTI (160ps)

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    Quote Originally Posted by DasArab View Post
    Cheap as chips mod, buy a hole saw for a power drill and drill some holes in the air box to allow extra air in and fit a K&N panel filter. Vauxhall G Man has one for sale in the For Sale section.
    http://vectra-c.com/forum/showthread.php?t=155562
    You won't see any benefit from doing this on a normally aspirated car especially not a smaller engined one like the 1.8 infact it could well have the complete opposite effect and screw the flow of air up losing the car power.

    On a tuned/re-mapped turbo car then yes it can be beneficial, but even then it's only at the top end of the rev range where it makes any difference. I've done it on my 2.0T on the advice of a rolling road as at the high end of the rev range it was getting strangled for air. But that was at 215bhp running 16psi of boost.
    "Doing a good job here is like wetting your pants in a dark suit, you get a warm feeling but nobody else notices"
    Maptun Tuned 2.0T Estate - click HERE for mods list.
    Brentwood 2012: Winner, Saturday Show. Hull 2012: Winner, Best Estate. Hull 2013: Winner, Best Estate & Runner Up, Best I.C.E

    Now Gone, bring on the Insignia (now "Teapot" Tuned)...

  9. #9
    spoons
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    Quote Originally Posted by DasArab View Post
    Lightening it would be the most cost effective.
    I agree here.

    Getting as much weight out of the car will make it faster and brake quicker. Just have to be mindful that the lack of weight will make the car sit higher and might handle worse unless you get it lowered (springs) for the lighter weight. Getting it 4 wheel aligned when your finished might be a good thing to get the cambers back on track.

    Getting weight out the car would be the best option

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    Taking out the seats, boot carpet and spare wheel; removing the middle silencer; fitting an induction kit - do all that and you'll have a noisier car for not much performance gain.

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