Torque Cars

low budget upgrades

Discussion in 'MX5/Eunos forums' started by porterbar, 30 November 2009.

  1. porterbar

    porterbar Newbie

    Messages:
    4
    From:
    charlottesville va, US
    Car:
    mazda miata
    Hi, I'm Porter, I just purchased a 1992 miata and I was wondering if anybody had any advice for tuning and/ or engine modifications. I am a novice, but I have friends who know their way around a car. I'm looking to get a little more power out of it with a limited budget and any advice from owners of the car or anyone with an intimate knowledge of it would be greatly appreciated.

    Thank you
    Porter Bar
     
  2. obi_waynne

    obi_waynne Administrator Staff Member Moderator

    Messages:
    41,284
    From:
    Deal, Kent UK
    Car:
    A3 1.4 TFSI 150 COD
    Hi there, which engine do you have? A set of fast road cams and a supercharger kit are the biggest and best mods you can do.
     
  3. porterbar

    porterbar Newbie

    Messages:
    4
    From:
    charlottesville va, US
    Car:
    mazda miata
    I have the 1.6 liter, and im getting a K&N fuel injection performance kit for christmas along with some new spark plugs, oil filter and fuel filter. I was reading reviews and they all said that both supercharger and turbocharger where extremely good modifications for the miata, but out of curiosity what is the benifit of a supercharger over a turbocharger, and would I need new pistons to lower the compression rate to prevent damage to the engine?
     
  4. obi_waynne

    obi_waynne Administrator Staff Member Moderator

    Messages:
    41,284
    From:
    Deal, Kent UK
    Car:
    A3 1.4 TFSI 150 COD
    If you run lowish boost and high octane fuel you should be ok.

    The turbo gives more power but IMHO it is more complex to install and setup. If you do lower the compression you can up the boost and really start to have fun.

    I doubt a K&N induction kit will give any power gains and on the 1.6 it may even rob you of a bit of power. (See the thread in our general technical forum for more on this.)
     
  5. aston

    aston The Torque Meister

    Messages:
    1,365
    From:
    South Dorset
    Car:
    VOLVO and VW
    adjust the timing from 10 to 14 degrees, add a k and n free flow panel filter and a 2.5" exhaust, (loose the cat if you can)
     
  6. silver92b

    silver92b Wrench Pro

    Messages:
    24
    From:
    Atlanta, GA USA
    Car:
    Miata NA6
    Take performance driving lessons and practice as much as you can. It's the best bang foir the money if you want to go fast :)

    I also have a '92 and when I first started in the mods game, I added a OBX catback exhaust and a homemade cone type filter intake. I think it make about 5 whp more on a dynodynamics dyno before heat soak took it away LOL!
     
    Last edited: 17 April 2012
  7. Mozza

    Mozza Full member

    Messages:
    17
    From:
    England, Warwickshire.
    Car:
    MX5 1.8 Sport 2005
    For the Mk1, the cheapest mod is the exhaust/inlet cam change, will cost very little.
    You will need an old 1.6 exhaust camshaft though, The exhaust cam has slightly higher lift than the inlet. It requires chopping off the cam sensor drive from the exhaust and drilling another hole in the inlet camshaft drive pulley. No other modification is required, can't be done as easy on the Mk2 though due to the solid lifters.
     
  8. silver92b

    silver92b Wrench Pro

    Messages:
    24
    From:
    Atlanta, GA USA
    Car:
    Miata NA6
    I just purchased and installed a new cat back exhaust. The SR-S N1 knock off from Ebay $183.99 (USD) shipped! I installed it myself. It was not that difficult. It's a cheap mod that gives a little power but sounds great :)

    Here is a vid clip with the sound: http://youtu.be/2tAp1a_uhjY

    And another one: http://youtu.be/ENShvXtjsLo

    [​IMG]
     
  9. dragonlee

    dragonlee Wrench Pro

    Messages:
    46
    From:
    manningsheath uk
    Car:
    r33 skyline gtst
    hi there budget upgrades kand n 571 kit and fse valve to start
     
  10. Obie

    Obie Newbie

    Messages:
    4
    From:
    Ct
    Car:
    1991 miata
    Hi, a cheap and effective upgrade is to look for and purchase a 1986-88 rd-7 MAF which is that flapper thing near air filter...it is plug and play and with a bit of tinkering solder in resistor as per hi kick racing tip...and you have more power above 6000 rpms...adds more air...need to get some headers also to allow engine to breath and exhale better..
     
    obi_waynne likes this.
  11. silver92b

    silver92b Wrench Pro

    Messages:
    24
    From:
    Atlanta, GA USA
    Car:
    Miata NA6
    Really, the upgrade you can make is to improve your driving skills. If you are already a fast driver and need more power, best get another car. I've spent thousands of dollars on 4 different Miatas (still have one). The most effective power mods are forced induction or NO2. None are low cost and all have some issues.... Everything else will not produce noticeable improvements. Of course, If you enjoy a louder or more "powerful" sound from your engine, Try a more open exhaust and some sort of after-market intake..

    Best thing to do for power is to keep the revs up! If you keep the motor around 4K rpm, it will feel a lot more powerful (and will be more powerful).
     
    obi_waynne likes this.
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