In a modern wet kit where, with correct Jet Sizing, you can target a proper AFR - the reaction is burning more fuel & oxygen. You have a charge air cooling effect with the injection (vaporisation/expansion) of the nitrous too. It’ll be a bigger bang, but a more violent/quicker one? You’re still burning 98ULP and Oxygen though?
Agreed in the wet system you turn your intake manifold ‘wet’ and not just dry with air…and then you may not have even distribution to each cylinder. However I believe our intake setup has a benefit here - that is the TB is basically in the middle of the 4 cylinders and we have curvey intake runners. This may offer better distribution than say a horizontal log type where the TB is on one end and the air/fuel/nos mix has to take a 90deg turn into each cylinder. You could well imagine the cylinder opposite the TB (furtherest from TB) getting either more or less of the mix…we might be better off. (We do have one 90deg from inlet piping past TB then into the intake manifold…presuming you put the Nitrous+fuel combo jet in a straight section of pipe prior to TB)
My thoughts over the last few days, for a Australia delivered K3-VE2:
- Jets sized for modest 20-35hp ‘shot’
- Need to retard timing. Well Aus delivered is already retarded compared to JDM for our fuel and likely so people could run 95 if they wanted without it blowing up. So if we run 98ULP perhaps the engine is already in a state of a few degrees retardation (Believe Mick advanced 5deg to gain some power on high octane fuel, or the leading theory is the JDM ECU advances timing to go from 75kw to 81kw)
- Need to run colder plugs or ones with shorter electrode, to prevent heat build up. Easy Done.
- Run all possible mitigation strategies: Bottle Warmer, Purge Kit, WOT Throttle position switch and RPM Window Switch, Wideband AFR Meter (or more expensive tuning on a dyno to more accurately set Jet Sizing).
Sure there’ll be variables, but there is with pump fuel aswell. So long as it isn’t tuned on the ragged edge, it should hold together for a while.
Though as Mr Gormsby said “clapped out engine” - well mines pretty smokey as it is, perhaps it needs a bit of block-ventilation