You'll probably need the SIM eliminators, but the VEC1 will help with fine tuning your Viper afterwards. The VEC2 can give you a lot more fine tuning and HP, but I hear it will be around $1000 and also requires dyno figures to get it tuned specific to your Viper. The VEC2 comes with the Roe Supercharger, which is the best thing to happen to my Viper. If you're not in to spending a whole bunch of money on your Viper (yet), the VEC1 is a great mod because it does what is claimed for it and you can tune it yourself while driving it on the street rather than having to go to a dyno. One other thing about the VEC1 is that if/when you go to the VEC2, either alone or ideally as part of the Roe Supercharger System, the VEC1 will transfer to whatever vehicle you have for your daily driver. I have my VEC1 in my heavily modded Ram pick up and it gave me better gas mileage without loss of power (I was running way too rich before the VEC1).
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/images/graemlins/drive
