I never said anything was not legal about other peoples motors, it seems that the overwhelmeing majority of the cars were faster in a stiraight line. D16Y8 here, have hondata running just slightly modified P28 map.
Might wanna get that tune checked out then.
Y8 program differs by about 9 degrees ignition timing in the computer, you could be running too little overall ignition timing.
The cam is cut wierd causing ignition timing to be off 9.x degrees, then the P28 basemap everyone runs has 16 degrees base timing and the Y8 crank pulley is indexed at 12 BTDC.
I'll assume you don't fully understand your VTEC.
Since D16Z6 always opens all four valves, just opens the intake valves farther and longer once engaged.