hmm if I had FI installed and it was going ok I don't think I would push the limits unless I was able to afford worst case. With a good tune over 400 is very reachable and many people run it w/o any trouble, I would just hate to see you push it too far and not be able to fix any issues that come up.

 

The Unichip continues on but obviously does what most engine managements do outside of normal operating ranges. Dumps fuel and pulls timing.

 

Agreed, but just as marquee manufactures bring PROVEN racing technology to the consumer market we bring PROVEN street performance to modified Z's. This in turn can lesson the percieved "risk". Its always a risk, but once I've done it so many times I am 100% confident in recommending the proper solution for a given application.