PPP upgrade louder or quieter than a SS BackBox
01 May 2001, 01:27 PM
#4
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Much much quieter off boost, small throttle openings and low revs - quieter on boost and high revs but with an entertaining whoosing/jet plane type noise 
The sound of Mike's (RB170) RB5WR coming passed at high speed
is like a jet plane
Matt
The sound of Mike's (RB170) RB5WR coming passed at high speed
is like a jet plane Matt
01 May 2001, 11:17 PM
#5
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As above - quieter off boost, just a nice background burble when cruising. When giving it some... mMMmm... back windows down please
Anyone tried doing this through the Dartford Tunnel? Best thing about it
Richard
Anyone tried doing this through the Dartford Tunnel? Best thing about it
Richard
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