you might have problems with 100% atom BOVs you might consider a partial recirc type BOV also

 

txs rfl of course

 

Piercing whistle or WOOSH?

 

RFL or type-H will give you the woosh.

The RFL is loud.
The H sets off, but not as loud. Still an awesome sound.

 

i have the rfl.....ehhhh.....it's alright...=D

 

i have the rfl no complaints.

 

no complaints, but this thing seems to have a mind of it's own..haha
its a woosh like all air on below boost rpms...under 3....but not loud...then on higher rpms,...it's a pitched woosh.....higher rpms meaning over 4.5k


kinda cool...i love it...got it for brand new 135 with flange....u could probably get a good deal on the rfl...seems to be like the resell value on the rfl isn't that good, but it's a good bov.