Honda Car Forum

jasonroach1988and2003 · #1 (**permalink**) 19 Aug 2007, 03:21 pm

what is the hissing noise in street racing cars between shiftswhen they rev it and on the down rev it hisses

wuilman_moran · #2 (**permalink**) 19 Aug 2007, 03:24 pm

if it has a turbo its a wastgate or blow off valve. they dump the excess pressure (when you release the accelarator) out into the atmosphere so the pressure doesnt damage youre throttle body or you turbo.

jaygysler · #3 (**permalink**) 19 Aug 2007, 03:29 pm

I'm guessing that it might also be just the wind noise since between shifts (I'll assume you mean during shifting)the engine is making less noise and at those speeds the wind noise is quite substantial.

drewxr · #4 (**permalink**) 19 Aug 2007, 03:32 pm

its probaly the nitrous (if they have any of it)

phatrprez03 · #5 (**permalink**) 19 Aug 2007, 03:34 pm

its probably the turbo.definetly

cra-z-r-n-u · #6 (**permalink**) 19 Aug 2007, 03:36 pm

the first answer is correct.

meowmixfoods · #7 (**permalink**) 19 Aug 2007, 03:40 pm

ok if a girl has to tell you this u need to do ur homework, its the turbo hun, and they vary by how high u have it, so it coulg be very low or it could be loud just depends, if its the weekend (

)

Q,way · #8 (**permalink**) 19 Aug 2007, 03:44 pm

turbo spinning

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