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Forced Induction Forum Sponsored by Active Autowerke
Discuss supercharging, turbocharging and even nitrous and water injection here.
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Old 10-10-2012, 07:12 PM   #1
silver46
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Want to run more boost on VF setup

Am running a vf570 setup with upgraded SI trim. Am hitting 7psi on gauge tho dyno reads close to 10psi. Am hitting 470whp 91 oct only in 5th on dynopack. 500 whp with 91+meth

I would like to run a bit higher boost as I have a 5 gallon tank for meth. The options are upgrade from 2.7inch pulley to either 2.62 or 2.4.
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Old 10-11-2012, 04:49 AM   #2
bAby norAA
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Just calculate it at every 0.10" down in size equates to 1 pound of boost increase, and go from there for whatever you are hoping to accomplish
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Old 10-11-2012, 03:16 PM   #3
silver46
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any ideas as to how much boost the VF570 injectors will support before upgrading injectors regulator fuel pump etc
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Old 10-11-2012, 11:33 PM   #4
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Usually the smaller the blower pulley you go, the bigger crank pulley you go. This is to prevent belt slippage and whatnot. Smaller blower pulley = more boost = more power. You will have to check with VFE to see if your injectors can handle the new pulley setup. And then you will need to be retuned of course.
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