I run an OBD1 P72 and my fuel cutoff happens at like 8200 RPMs. VTEC engages at 4200 RPMs.

You sure you have the right ECU?

If you look at the code on the ECU itself, the middle numbers are what you have.

You also have to remember that the GSR has secondaries in the intake manifold that change the pitch of the exhaust like VTEC does. Are you sure that's not what you're hearing and VTEC isn't working?

Just a thought.

I totally sympathise with you man... just about everyone here knows what I went though when I built mine. :wtc: