MICRO IMAGE - Light Weight Crank Pulley - Toyota Yaris Forums

AzianCuz · 09-18-2015, 11:22 PM

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 · 09-19-2015, 10:10 AM

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

WeeYari · 09-19-2015, 12:30 PM

MI didn't commission an under drive pulley.

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invader166 · 09-19-2015, 12:50 PM

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 · 09-19-2015, 02:22 PM

Quote:

Originally Posted by 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.

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.

09-18-2015, 11:22 PM	#1
AzianCuz conundrum562 View User's Garage Drives: Toyota Yaris 2007 Type S Join Date: Jun 2010 Location: Long Beach, CA Posts: 78	MICRO IMAGE - Light Weight Crank Pulley 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? __________________ --------------------------------------------------------------- BLITZ S/C\|MICRO-IMAGE CRANK PULLEY\|NST ALT;WATER PUMP PULLEY\|BLITZ SUS SHORT RAM;HEADERS;AXLE-BACK EXHAUST\|2.25 PIPING\|1ZZ INJECTORS\|OPTIMA YELLOW-TOP\|GTSPEC FRONT STRUT;MID LOWER CHASSIS;4 PNT FRNT LOWER BRACE\|WHITELINE REAR SWAY;BUSHINGS\|TANABE FRNT SWAY\|TRD LOWERING SPRINGS/SHOCKS\|R1 CONCEPT DRILLED & SLOTTED ROTORS\|EBC GREEN PADS\|THROTTLE SPACER\|XTREME PERFORMANCE CHIP MOD

09-19-2015, 12:30 PM	#3
WeeYari View User's Garage Drives: 06 Polar White 5dr, 13 Soul 4u Join Date: Oct 2008 Location: Georgetown, Ontario, Canada Posts: 5,740	MICRO IMAGE - Light Weight Crank Pulley MI didn't commission an under drive pulley. Sent from my iPhone using Tapatalk __________________

09-19-2015, 12:50 PM	#4
invader166 Pumpman Drives: 2019 Kia Soul EV Base Join Date: Dec 2014 Location: Langley, BC Posts: 434	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. __________________ "I would rather loose by a mile in a car I built myself, then win by an inch in a car that was built for me." - Moog

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09-19-2015, 10:10 AM	#2
Bluevitz-rs 1NZ-6spd View User's Garage Drives: '05 6-Spd Vitz RS Join Date: Oct 2008 Location: Oshawa, Ontario, Canada Posts: 2,967	It's not an under drive pulley is it? That would lower the rotational speed of the supercharger.