as a vw mk1 lover, I have experience with cis, even turboing it. its a simple concept - air flow lifts a riser plate which is attached to a fuel dist and a very high pressure fuel pump - more air = more fuel. tuning does have its limitations/issues ( dubbers have used volvo, mercedes and porsche cis fuel dist to increase fuel in modded cars.) should work fine on a sami. However price of $400 for the kit and $200 in parts.....around here a complete wrecked 1.6 16v can be had for the same money....or for a little more a turbo diesel swap (yummy) .....my2cents.