Those old prelude Si's arent fast 8.5-9.3 to 60mph stock dont feel proud a bout the S Mode S3 S4 its still slow I had one long ago

From a mostly stock 325 to that, its pretty good. But what do you mean M po wer? If it has the M3 motor in it, and only runs 15.4 then something is wr ong. But it sounds good.. not too raspy at all.

Not bad, when you get boosted it will be pretty quick.