i have had a borla and RE intake since last spring and have found it to be loud but tolerable.
I just added the SR hi flow cat and midpipe to the system and frankly love the sound.
it is substantiallyy louder even though I also installed the resonator.
i will keep the system as is but add some dynamatt in the trunk for sound deadening.
has anyone done this?
btw, performance improvement is GREAT GREAT GREAT. however, wife and three year old.
need i say more?

 

Before you go adding a bunch of Dynamat or similar, I'd suggest you add a "tertiary" resonator, like I (and several others) have done. Full details can be found in this thread. Hope this helps! :D

 

SR has an optional resonator for their cat now...does yours have it?

 

[QUOTE=rudy8]
it is substantiallyy louder even though I also installed the resonator.
[QUOTE]

 

thanks omi! as usual, you came through again. however, (and this is for everyone), i am now okay with the sound and dont know if i can live without it! (to hell with the comfort of my wife and kid!)
power is so much better...up there with the best upgrades flywheel and chip.

 

Yeah.. I agree with you.. The best mods to date definitely have to be flywheel/mid pipe/pulleys... These are awesome mods.....

 

Dynamat or BQuiet will muffle it some, I did BQuiet Extreme in the trunk and doors right after the hi flow cat for $100 bucks.