is it possible to get rid of the flutter when you use a catless downpipe. 06 wrx, thanks
May 7, 2007 #2 D dyzfr6 New member is it possible to get rid of the flutter when you use a catless downpipe. 06 wrx, thanks
May 8, 2007 #5 mikebike357 New member I believe you can adjust the wastegate arm to correct the flutter....
May 8, 2007 #6 Evan Active member if you move the wastegate arm, make sure your peak boost doesn't change.