Originally posted by Epoch
Ah... so the secondary lobe can be an entirely different profile from the primary one? eeenteresting...
I think the only limitation would be that you couldn't have the VTEC lobe be a lower lift than the primaries, because the rocker arms would still be riding on the primaries instead of the VTEC lobe.
Originally posted by 99DCtwo
All good stuff, Hey can you let me know where the vtec engagement point is exactly on those dyno runs????
All of those are different engines, likely with different vtec engagement points.
Originally posted by kfar09
im looking at my dyno plot right now and my hp and torque drop right at 4000 rpm. and then they start to go back up a little at 4300. so wouldn't i want to change my vtec engagement to 4000 rpm so my powerband doesn't drop
Sorry I missed this post while trying to respond to dctwo.
You could fiddle with it a bit on the dyno, but what you're seeing could be a hole in your tune as well. Are you using the nitrous maps for your VTEC fuel and ignition or is it all on the main map?