i will be getting an Omex Rev limiter soon, with launch control.
Basically you can set the redline to where you want ( 2k - 7k etc)
Launch control just basically keeps the revs at a set limit on full throttle while the button is pressed, so approx 3.5-4k on my saxo.
Also when you hit the limiter it cuts the spark instead of the fuel so you get a nice bit of pop bang
Not really that expensive, but i will be getting my hands on one.
As for fitting, im sure i got quoted aprox £50 from an auto electricians
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