Alternative Tuning options for VF kits

Silver46 · Mon, Jul-02-2012, 08:13:16 PM

anyone know the propper pulley size and where to get it if i want to run 12 or more psi on the VF570 kit ? I think i will just try it out and log Knock AFR etc on my Dyno to see if its safe.

pbonsalb · Mon, Jul-02-2012, 09:47:55 PM

Measure what you have, from the ribs, not the shoulders, using calipers. It may even be labeled on the exterior. Go to the Vortech website and order the next size smaller size available in the same number of ribs. Very roughly, each step down is another 1-2 psi. Better to go gradually.

Mon, Jul-02-2012, 08:13:16 PM	#31
Silver46 Registered User Join Date: May 2012 Posts: 191 Reputation: 0	Re: Alternative Tuning options for VF kits anyone know the propper pulley size and where to get it if i want to run 12 or more psi on the VF570 kit ? I think i will just try it out and log Knock AFR etc on my Dyno to see if its safe.

Mon, Jul-02-2012, 09:47:55 PM	#32
pbonsalb Registered User Join Date: Jun 2005 Posts: 1,898 Reputation: 0	Re: Alternative Tuning options for VF kits Measure what you have, from the ribs, not the shoulders, using calipers. It may even be labeled on the exterior. Go to the Vortech website and order the next size smaller size available in the same number of ribs. Very roughly, each step down is another 1-2 psi. Better to go gradually.

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