I have a TT on my car, not because I need it (which I don't for the already stated reasons), but because it provides me with (1) an additional boost gauge to compare with my factory unit and (2) it offers a "peak hold" capability which is useful to me for tuning purposes.

As to utilizing the Empeg for this purpose, I would never want to do this because the new generation of TT's actually have an algorithm that caculates how long the engine should remain running based upon driving habits since last turn-on.

If you want a TT, there are many inexpensive units available from the likes of Blitz, HKS, and others.