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      10-21-2012, 04:09 AM   #54
pokeybritches
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Drives: ESS/G-Power Z4M, VF Z4, 996tt
Join Date: Sep 2009
Location: Los Angeles

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Garage List
2006 BMW Z4M  [10.00]
2006 BMW Z4M  [8.50]
2003 BMW Z4 3.0i  [9.00]
Those were the early VF kits of several years ago, when tuning was outsourced to GIAC. AFAIK they do it in house now.

Perhaps the G-Power is more than the ESS or VF kit where you are, but I'm getting my G-Power kit installed by a very high quality shop for less than the cost of the VF 480. Unbeatable deal if you ask me.

I do like how well-matched the blower is to the intended power output. My car has higher mileage than most, so I'm hesitant to run 10 psi on it. No track time though (yet).

Lastly, if you look at the hardware and numbers, the G-Power kit is running identical boost with a nearly identical setup to the VF 480 kit. I'd expect power levels to be around the same... and if anything, in favor of the G-Power kit because the blower is sized more appropriately to the setup. I will say that the VF kit I have on my 3.0i feels like it makes the claimed horsepower, as there's not much difference between my naturally aspirated M and my 3.0i.

I don't think you can go wrong with any kit.
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VF Engineering Z4 3.0i, ESS Z4M, G-Power Z4M, 996 Turbo
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