I think they are electric. The back of the gauge only has 2 wires, and no vacuum nipple. I think it's specific only to S15's too. You can use the holder in S14's though, but you have to cut the top bit of the plastic to fit.
Any unichip tuning, other than gt auto and rs dyno, I did went for d tuning in sri damansara,they done great job, but its not confident for me to go there.
Anymore suggestions im kl and selangor area for unichip...
sifu outside plz help me.....how to install a daytona mivec controller to a mivec-md....
the mivec controller has 6 wires
black
2 yellow
blue
red
white
but i dun have the manual book....dun know which wire is for...