MICRO IMAGE - Light Weight Crank Pulley

[AzianCuz]

So before I added the light weight crank pulley I was idling high like at 2000RPM+ now that I've installed the pulley it dropped it back down to normal.

As far as performance goes, it seems to lighten up the throttle. When I step on it lightly it speeds up normally but quicker, I have the S/C boost set on medium so it doesn't kick in until I step on it a little harder at around 4000rpm. The only thing is it doesn't seem to pull as hard as before when I had the old stock pulley...

I dunno anyone else notice any differences or better performance let me know?

[Bluevitz-rs]

It's not an under drive pulley is it? That would lower the rotational speed of the supercharger.

[WeeYari]

MI didn't commission an under drive pulley.


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[invader166]

I'm surprised a lightweight pulley can lower your iddle speed. I've never heared of that before.

You're right, the car it should accelerate the same way as a before, only it'll reach that high RPM quicker. That's the main performance benefit.

Which gear/rev range does it not pull as hard? Does it pull less? Keep in mind, this type of pulley will not create HP.

[AzianCuz]

I'm surprised a lightweight pulley can lower your iddle speed. I've never heared of that before.

You're right, the car it should accelerate the same way as a before, only it'll reach that high RPM quicker. That's the main performance benefit.

Which gear/rev range does it not pull as hard? Does it pull less? Keep in mind, this type of pulley will not create HP.

It's a crank pulley, Let me test it out some more and see what happens, it could be all in my mind... Also I have an automatic not stick, so that might be part of it too, but for sure my idle did drop to normal from this.