" I've been told that to u
" I've been told that to up the horsepower in the '81 and newer Evinrude 15s to 15 prop HP that Evinrude just put in a tuned exhaust pipe. If this is true, could I put one of these tuned exhuast pipes from a newer motor into my '76 and pick up a HP or two? "
" I've been told that to up the horsepower in the '81 and newer Evinrude 15s to 15 prop HP that Evinrude just put in a tuned exhaust pipe. If this is true, could I put one of these tuned exhuast pipes from a newer motor into my '76 and pick up a HP or two? "