[QUOTE=Eldy]Is this the noise you're all talking about?

http://members.dslextreme.com/users/g35driver/noise.wmv

The noise in the video is the same thing i have. i had my megan pipes on for only one day so far sounded great on the lift, great on the dyno like stock but screamin.. driving home though i drove next to the center median and my car sounded raspy as hell i also had my uncle drive the car alot of rasp outside but you cant tell much difference inside what pipes do you have eldy?

 

well i installed my ultimate racing cats and the wisp got suffuciently quieter but is still there, the rasp is gone my low end power is back but i do get the cats hitting something under acceleration im curious to see how much the vq twists because i only have about a finger of clearance inbetween the cats and heat shield wondering if thats the culprit

 

thanks for your results. Sounds like your cats managed to dampen some of the hiss and all of the rasp. Now I'm tempted to add another set of resonators in my exhaust stream just to quiet the hiss to bearable levels. The rasp isn't that bad on my set up anymore....bearable I guess...

 

My hiss is at idle , another thread says it is the fuel pump ? off and on constanly

 

there's no reason for the fuel pump to become louder when just adding test pipes. That wouldn't be the proper behavior for fuel pump anyway

 

jesus..im getting my chit installed tom and nervous about all this talk! difference is..i have the tanabe y pipe..ill let you know all the results.