Just had a ppp fitted to my WRX 01 and now it seems to be making a kind of induction sucking of air noise under acceleration. Seems to be 2K RPM upwards.

Is it supposed to do this? Didn't notice it before the ppp.

 

Under hard acceleration PPP makes a "blowing noise".
I very much like the PPP sound (MY99, PPP and open downpipe).

 

Yea I guess it could be blowing. So this is ok then?

 

no noise with my01 wrx ppp
so may be worried
steve

in lincs if you r neer and want comp