BMW 318is engine power increase

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  1. BMW 318is engine power increase 
    #1
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    This is a question that has been posted many times, but i have a few other questions relating to increasing my e36 318is engine power.
    I have been intending to do an 2.8 engine conversion for a while now, but i thought i had better check with the insurnace company, but "Disaster" they wont insure me with a 2.8 engine in my car until 2010!!
    So as i stuck with the 4 pot for a while, is there much more bhp to get. At the mo it has:
    Powerflow exhaust with decat
    Pipercross induction kit (soon to be replaced with a panel filter)

    Finance providing i am getting the car remapped next month by emaps so the power should be up, but is there much else i can do ?, cams maybe?

    Is it worth spending money on my engine or do i buy a 2.8 lump and spend the money on that instead to increase thats performance and then fit in 2010!!

    Oh and i have adopted a wise bit of A20 rym's thoughts here (cheers rym), i dont want to buy a car with a bigger engine in because i have spend lots of money on mine and dont want to do it all again

    Any advice much appreciated
     
     

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    RYM (17-04-2009)

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    #2
    RYM
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    How many insurance companies have you tried?

    I tried that many that my opening line on the phone was " hello, do you cover extremely modified cars with big power" Stuff going through all of the questions just to hear a NO!!! at the end

    Try Adrian Flux and mention bimmerforums as they will do you discount. Also try Liverpool Victoria.

    Before carrying out any further mods to increase power get the car rolling road tested, this will give you an idea if your mods are adding or losing BHP.

    I spent a thousand pounds on my 318is and lost nearly 7 bhp

    Your car rolled out of the factoery with a so say 141BHP

    Let us know how you get on with the insurance quotes, there will be companies that WILL cover you but at a price. It will just depend on how much of your hard earned cash you are prepared to throw away on insurance

    What is your age out of interest?
     
     

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    #3
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    Im only 18 mate, very lucky to have my bmw as it is, but cant help crave the extra power of a straight 6, plus the fantastic noise it has!
     
     

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    Quote Originally Posted by Lloydie123 View Post
    Im only 18 mate, very lucky to have my bmw as it is, but cant help crave the extra power of a straight 6, plus the fantastic noise it has!
    18? You will get told by many companies that they will not insure you.

    Like already mentioned, someone will

    Before you pick up the phone and speak to the performance/young driver companies that will insure you make sure you have loosed your belt and have your your jeans around your ankles You are going to be in for a right ole spanking when it comes to receiving the quote.

    I reckon your best quote x3 will very nearly BUY you an E46 M3
     
     

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    Lloydie123 (19-04-2009)

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    #5
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    You have to remember these cars are old now so as a result you need to do a full basic stage 0 tune as I call it.

    - replace all HT Leads/Coils
    - replace 02 sensor, crankshaft sensor and camshaft sensor
    - check and replace perished rubber vacuum/pressure hoses
    - strip and clean injectors and refit with new o-rings
    - check for inlet manifold, exhaust manifold gasket leaks

    The above should help restore the engines efficiency and performance to that of when it was new. This will also mean that any modification such as a remap etc will ensure maximum benefits due to a healthy base engine to which it is fitted.

    As for cam, they can give more power at higher revs, but do be careful as you are likely to loose torque at the bottom end. If you like revving the tits of your car everywhere you go then add a set of performance cams to the list, otherwise leave well alone.

    Also, a 318i is not something to spend money one for performance gains, neither are N/a engines as a general rule of thumb.

    I would due the stage 0 tune and have a remap and leave it at that. Also bear in mind you are still young and going through that 'racing' phase as a result you may possibly also crash your vehicle.

    Have a remap and then just enjoy the car the way it is and accumulate your money for a few years and then buy something else or do the conversion.
    Let the fun times roll .....

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    Lloydie123 (19-04-2009),mikaveli (20-04-2009),RYM (19-04-2009)

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    #6
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    I've heard that a big bore thorttle body works well on the M42 engine
     
     

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    Cams are available for the M44, not cheap though, Kent do them, also Shrick IIRC
     
     

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    When I was looking for cams for the M44 Piper and Kent were not available. I had the feeling that Piper would have done some customs ones if you asked.

    The options were Cat cams or Schrick's.
     
     

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    #9
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    Yeah, my insurance quotes were starting at £3700!!!! even though my cars in a locked garage every night! i guess its the age thing. Touch wood, i am one of the few people of my year not to crash my car, and almost unbeilveably for most lads my age, i drive everywhere at the speed limit, because i really can not afford to and do not want to lose my license and i now that with any points, i will never insure a bmw...

    Many thanks for the tips dsk, work will be happening next month, with remap month after, finance providing of course.

    Also ive found that the 318is dosent really move well until you hit 3500+ revs then she flies, is that normal? I dont really like doing this regulary as a rule of thumb
     
     

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    Quote Originally Posted by Lloydie123 View Post
    Yeah, my insurance quotes were starting at £3700!!!! even though my cars in a locked garage every night! i guess its the age thing. Touch wood, i am one of the few people of my year not to crash my car, and almost unbeilveably for most lads my age, i drive everywhere at the speed limit, because i really can not afford to and do not want to lose my license and i now that with any points, i will never insure a bmw...

    Many thanks for the tips dsk, work will be happening next month, with remap month after, finance providing of course.

    Also ive found that the 318is dosent really move well until you hit 3500+ revs then she flies, is that normal? I dont really like doing this regulary as a rule of thumb

    That is correct Lloydie, you need to keep the revs high up in the range to see any performance. I always used to drive mine just off of the limiter

    They are quick cars, once you've wound them up
     
     

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