jeff s

Hi all,

I've read a few posts that headers will make these cars louder.

I've installed headers on a few vehicles but never without changes to the rest of the exhaust as well. I don't see how headers alone would effect the sound volume out of the pipes.

Does anyone have any proof either way?

I'm trying to choose between an o/r-x only or same with longtubes. I don't want loud, only want to eliminate the cats for peace of mind when eventually going supercharged. Thought it was just cost vs. power, but if headers will make me louder I will stick with just the o/r pipe. Keeping stock mufflers as well.

Thanks.

QuadCammer5.0

Drive normal and your all good. Rev it up and it's loud. Gives it an awesome pur sound. I wouldn't change a thing. Only you can make it loud.

2012GTCS

yes from cars ive heard it will be louder.

GrabberBlue310

Full exhaust

Hytek

Holy crap! I just saw your post with the racing seats and I was wondering why you had them, now I know why lol! That's one wicked sounding pony!

GrabberBlue310

thank you I track my car every weekend. Cant get enough

here is a video from new years eve

Hytek

I never thought I'd want to take mine on a road course....your video just changed my mind. That was cool!

GrabberBlue310

yeah its a blast man so much fun. Im going to Big Willow this saturday I cant wait

jeff s

Thanks for the replys and the vids. Still no answer to my question, so I'll try to clarify.

All else being equal, will LT headers with an off-road x-pipe be any louder than the stock header/manifolds with a Lethal/BBR/UPR type off-road x-pipe?

Does anyone have first-hand experience with both set-ups with the same over-axle pipes and mufflers?

If headers are louder, what theory is there to support that?

Thanks again, Jeff

AlsCobra

Headers alone will not make it any louder. Midpipes and mufflers will give you louder exhaust.

jeff s

Thanks Al, that's what makes sense.

Reading some posts saying otherwise just got me thinking there may be more to it.

I should know better than to believe what I read on the internet!

AlsCobra

Headers will help equal the flow before the collectors and may actually quiet it a little.

2012GTCS

Every 11-12 5.0 I've heard has been pretty **** loud with LTs. Even with high flow cats.

grabber blue gt

You guys talking about headers not making the car louder are nuts. My 2010 got much louder after I installed longtubes, and 5.0s that I've heard with longtubes and HFC's sound bad a##

redneb

Great video! I was hoping to see you eat that Boxster, but the video ends....

2012GTCS

Did u end up taking him?

OP- your car WILL be louder, we've been saying it since the first few posts. The only thing that will really mellow out your car a tad is an after-cat X pipe

GrabberBlue310

I did catch the boxter by the end of the lap.

Bmeline916

Deleting the cats will make the biggest difference in loudness but LT's will also make the car louder. Have a buddy that was totally stock and the first mod he put on was LT's and tune and the car definitely was louder.