Venom 400 chip

Hey have you guys heard of the Venom 400 chip? I was wondering to get it for my NA 95 Supra. Is it actually worth its money? Does it cause any "negative" things to occur to the engine?

I bought the G-Force chip upgrade and had it on my car for a month or so, it ran great. Later on it richened the car so much that after replacing brand new NGK's and let the car idle for 20 minutes, it filed them out. Don't know in your case but a chip upgrade is always a good idea for your computer in most cases