d16z6 or d16a9 or d15b 3stage

[egycasper]

need help,which better as a stoke engine without any modifications (d16z6 or d16a9 or d15b 3stage)
and if i added headers doese it make a differense

[AudioGuy93DelSol]

The D15B has the best r/s ratio of the three if that's what you're asking. If you mean which is the best stock, D16z6 or the D15B. They are basically the same. Headers will give you a decent bump in top end power also.

[hany]

the D15B is best for economey and best for the hp its 130 hp but to gain the 130hp completly you should install the engine with its ecu (P2J) and with its intake manfoilde and be sure the 2 vtec sensor are conecting right