40359 Borla Muffler install

Sidewayz · October 29, 2016

So I finally just had the muffler welded in. Kept the flapper valve and resonator. Not impressed with the sound. Will removing the resonator give me a much louder sound or will it be obnoxious? Looking for info from anyone running the same combination.

Thank you in advance

Rawyzf · October 29, 2016

I thought the 40359 sounded really good with no resonator and stock headers.

Sent from my SM-G930V using Tapatalk

Sierra Jon · October 29, 2016

Do you have the valve pinned open for now? That makes the biggest impact. Also my 40359 got louder for about a week.

Sent from my Nexus 6 using Tapatalk

Sidewayz · October 30, 2016

Do you have the valve pinned open for now? That makes the biggest impact. Also my 40359 got louder for about a week.

Sent from my Nexus 6 using Tapatalk

I have to do that. I was going to do it tomorrow morning.

I thought the 40359 sounded really good with no resonator and stock headers.

Sent from my SM-G930V using Tapatalk

I may have to do that this week. I can probably do that at home with two clamps and my cutoff wheel and add a length of pipe.

Rawyzf · October 30, 2016

This is the 40359 with no resonator.

Sent from my SM-G930V using Tapatalk

Sierra Jon · October 30, 2016

I still have the resonator but I may take it out soon. The valve I just have a nail in it propping it open.

Sent from my Nexus 6 using Tapatalk

cbrsilv15 · October 30, 2016

Def clamp the flapper open. If it's not loud enough then you can cut out the resonator.

Sidewayz · October 30, 2016

Will keeping the flapper open give it more sound??

Sidewayz · October 30, 2016

I have a 5.3 not 6.2 just for clarification

cbrsilv15 · October 30, 2016

Yes.

Sidewayz · October 30, 2016

Yes.

Thanks for taking the time to get back to me

mjoekingz28 · October 30, 2016

This is the 40359 with no resonator.

Sent from my SM-G930V using Tapatalk

Why is your voltage so low?

This is the 40359 with no resonator.

Sent from my SM-G930V using Tapatalk

Why is your voltage so low?

cbrsilv15 · October 30, 2016

I added a Borla sport GMPP muffler and was really disappointed with the sound. Super quiet. Went the next day and cut off the resonator. Still quiet and thinking I just wasted money. Decided to clamp my flapper valve open and it was night and day. I wish I cut it out to begin with but mine sounds perfect without the resonator.

FYI Borla told me to leave the flapper on. Don't do it! Lol.

Sidewayz · October 30, 2016

I added a Borla sport GMPP muffler and was really disappointed with the sound. Super quiet. Went the next day and cut off the resonator. Still quiet and thinking I just wasted money. Decided to clamp my flapper valve open and it was night and day. I wish I cut it out to begin with but mine sounds perfect without the resonator.

FYI Borla told me to leave the flapper on. Don't do it! Lol.

Clamping it open tomorrow and probably removing both on Tuesday