Hey guys,

Recently, I've been noticing more and more "fluttering" when I'm accelerating at WOT, regardless if I'm maxing @ 26psi or @ 23psi... I haven't been able to figure it out... and in addition, I can feel the flutter in my power as well. Maybe it's a symptom of the fluttering? Any ideas?

Mods:
FP EvoGreen
GSC S1
Injen intake, IC pipes
eBay O2
BR TBE w/ HFC
Perrin EBCS @ ~25psi



Thanks!

 

It's the Perrin solenoid. The sound you hear is the DV reacting to the changes the solenoid is making. All electronic solenoids in a bleed setup will have this issue.

The slight variation in the boost curve won't really affect your power/tune/drivability.