Ecs vs a&a?
Premium Supporting Vendor
Joined: Oct 2004
Posts: 23,599
Likes: 1,226
From: Providing the most proven supercharger kits for your C5/6/7 609-752-0321
Either kit can be returned back to stock fairly easily, We have had many people go from an earlier C6 and upgrade to a ZO6 or Grand Sport like RichS, and take the kit with them to the new car. Feel free to give us a call if you would like to discuss this in length. 
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Drifting
Joined: Apr 2008
Posts: 1,955
Likes: 22
From: Lehigh Valley Pennsylvania
Both are quality kits, and there is no wrong selection. Any supercharger application will require some modification to the top of the radiator and front bumper for the intercooler.
The only thing that should influence your decision is which supplier has a certified shop closest to your residence.
The only thing that should influence your decision is which supplier has a certified shop closest to your residence.
Pro
Joined: Dec 2009
Posts: 648
Likes: 0
From: Kalamazoo MI
From what I read before i went with the E-force; all should be fine keeping the trans in the 500-550 rwhp range. It depends on how you apply the power, if you are on normal tires, on normal takeoff tires will spin before max torque is reached, using stick drag tires will excert most torque on transmission, thats when you are going to have to be careful.
I like the new drag racing style where you start from a rolling start, that is way easier on the transmission and tires.
I like the new drag racing style where you start from a rolling start, that is way easier on the transmission and tires.
