89 K1500 Scottsdale 5.7L 5spd 3:42 RamJet cam Dart iron TBI heads 427 PCM swap
95 C2500 Cheyenne 6.5L turbo diesel 4L80e 4:10 DB2-4911 Manual pump conversion 0411 PCM trans control 2Bar COS
05 Outback XT 2.5L turbo gas auto
LOL, that's a fairly common comparison I hear... The sound comes from a mix of straight cut gears in the out-drive, twin 4" exhaust outlets, and the turbo inlet being directly under that scoop on the hatch. Since everything faces to the back, it's actually pretty quiet inside the boat.
But I got a bright idea one day to turn that scoop around. Force more cool air into the engine bay. And by the end of the weekend, it was switched back....
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