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-   -   Want to run more boost on VF setup (http://forum.e46fanatics.com/showthread.php?t=949748)

silver46 10-10-2012 07:12 PM

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.

bAby norAA 10-11-2012 04:49 AM

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

silver46 10-11-2012 03:16 PM

any ideas as to how much boost the VF570 injectors will support before upgrading injectors regulator fuel pump etc

BrianSpilner 10-11-2012 11:33 PM

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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