I didn't have a race cover on my 475. I do have a race cover and billet wheel on my 483 and it really isn't much different sounding than my 475
Twins quiet?
- Thread starter SmithLBZ
- Start date
I had a 366/483 set up it was kind is quiet. Sounded like a bunch of air being pushed around when spooled. At idle and low speeds sounded like a big block with flow masters..just my opinion. Have not heard the new set up in person, but I have heard a video of it.. Can't wait to enjoy it in person. 
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What was your fueling and how did it spool?
What was your fueling and how did it spool?
I guess after you ride around in a built lbz with garrett's GTX4202R, and a GT55 and the sound coming from those are a work of art.....and wish your 475/stock had the same sound
My twins are very quiet until you really start pushing some boost, then they scream.
The batmo just changed the pitch of the whistle, maybe a little more audible at low boost but nothing crazy.
My cousins stock/475 whistles a lot louder than my setup
The batmo just changed the pitch of the whistle, maybe a little more audible at low boost but nothing crazy.
My cousins stock/475 whistles a lot louder than my setup
my set has the most whistle between 10-20psi other than that it pretty quiet
cast 475 with a race cover over the IHI
cast 475 with a race cover over the IHI
My borg s472 seems the loudest in cab right at about 7-10 psi. Then it quiets down but still screams. Windows down cruising against a sound barrier with some boost...will hurt your ears regular cast wheel and housing as well.
regular cast wheel and housing as well.
Heres my s472 the night I installed it on the first test drive.
https://www.youtube.com/watch?v=VC60p1rNUSQ&feature=youtube_gdata_player
https://www.youtube.com/watch?v=VC60p1rNUSQ&feature=youtube_gdata_player
My borg s472 seems the loudest in cab right at about 7-10 psi. Then it quiets down but still screams. Windows down cruising against a sound barrier with some boost...will hurt your ears
That's how my 72 is. Loudest at around 10-15 psi. At 40 psi it just sounds like a pissed off vacuum cleaner. It's SO loud when I go past a big wall and roll Into the throttle.