I think I found my exhaust leak... WTF?

**NateSVT** · 10-14-2011, 06:35 PM

Was cruisin with a couple of my buddies a week ago and my exhaust started to sound like complete shit. By the time I got home it almost sounded like I was running open headers.

40r S2000 with 561rwhp & 74GTS E85 Supra with 690rwhp.

Jacked it up and made sure the x-pipe and catback was tight, started it up and it still sounded like this.

View My Video

So I thought that there was either a crack in one of my Mac longtubes or the bolts came loose that hold them on.

I took off the K-member and the passenger side header,

then start to take off the driver side and see this...

I guess I'm gonna call Mac and see if they'll replace it, if not anyone know of a place that could fix it?

**yeahloh95** · 10-14-2011, 06:48 PM

wow thats crazy i hope they fix it

**pRojekt02GT** · 10-14-2011, 07:12 PM

Wow! thats a pretty nice circular hole. I'd say thats what caused your "noise"

I'd hope they'd replace it. I could understand a possible weld crack or something from a long period of use, but a hole like that? ehh. Call, let them know your upset and see what they do! If nothing, I'd buy a different set of headers.

**speedracer** · 10-14-2011, 07:27 PM

Originally Posted by NateSVT

Was cruisin with a couple of my buddies a week ago and my exhaust started to sound like complete shit. By the time I got home it almost sounded like I was running open headers.

then start to take off the driver side and see this...

I guess I'm gonna call Mac and see if they'll replace it, if not anyone know of a place that could fix it?

Off of the car thats an easy fix... Ive been a welder for 25 years and never saw a chunk of pipe just blow off like that.

**map22** · 10-14-2011, 08:17 PM

Wow. I like how its a perfect oval lol good luck!

**map351** · 10-14-2011, 08:38 PM

Wastegate hole! Factory 5?

**fast4ord** · 10-14-2011, 10:05 PM

egr bung?

**Stroked03Cobra** · 10-14-2011, 10:06 PM

That is crazy!

**PaxtonShelby** · 10-14-2011, 10:09 PM

For the pipe to fail like that it almost seems like it got whacked with something.

How about some more info on the FFR in the garage!!

**scott5** · 10-15-2011, 09:33 AM

Dayum!! Yea if mac does not replace that i would be going with a different manufacture.

**2000GT** · 10-15-2011, 01:35 PM

MAC stands for Make Another Choice.

**95riosnake** · 10-15-2011, 01:43 PM

Originally Posted by 2000GT

MAC stands for Make Another Choice.

I have MAC lt's on my car and I have no complaints... Every company has a bad batch here and there. What can you upgrade to on a terminator? Kooks, for a ton more money.

I'm interested to find out what caused that hole, that's crazy stuff.

**jaa55** · 10-15-2011, 04:51 PM

wow, never seen that happen before

those CCWs would look badass on that kit car

**How Much?** · 10-15-2011, 05:41 PM

Originally Posted by 95riosnake

I have MAC lt's on my car and I have no complaints... Every company has a bad batch here and there. What can you upgrade to on a terminator? Kooks, for a ton more money.

I'm interested to find out what caused that hole, that's crazy stuff.

Mac stuff sounds great too!

**no1sirbutler** · 10-15-2011, 06:07 PM

Originally Posted by 95riosnake

I have MAC lt's on my car and I have no complaints... Every company has a bad batch here and there. What can you upgrade to on a terminator? Kooks, for a ton more money.

I'm interested to find out what caused that hole, that's crazy stuff.

Stainless works makes a killer set of long tubes as well.......it almost looks like the header was hitting something to cause it but I doubt that....maybe a rock hit it but doubt that as well since your running a stock K.

**Martin0660** · 10-15-2011, 06:32 PM

Originally Posted by speedracer

never saw a chunk of pipe just blow off like that.

X2 - I can not imagine the failure mode of a piece of tubing that would casue that ... I have seen it on my headers when the wastegate flange broke off, but it was something attached breaking off, not just blowing out a piece of tubing ... One of the strangest things I've seen.

**NateSVT** · 10-15-2011, 06:35 PM

Yeah guys I have no idea how it happened. When we left Monroeville it sounded perfectly normal then on the parkway it sounded like a small leak, like my catback was loose or something. By the time we were at Oakland it sounded like my catback fell off and just got louder until I got home. So it started out small then somehow became a 1.5" round hole haha

**John4cam** · 10-15-2011, 07:25 PM

Originally Posted by NateSVT

Yeah guys I have no idea how it happened. When we left Monroeville it sounded perfectly normal then on the parkway it sounded like a small leak, like my catback was loose or something. By the time we were at Oakland it sounded like my catback fell off and just got louder until I got home. So it started out small then somehow became a 1.5" round hole haha

That is strange, you would think it happened all at once judging by the aftermath. Have you contacted Mac?

**o4c0b|2a** · 10-17-2011, 06:05 PM

Crazy stuff Nate. Almost perfect oval circle lol. I agree with some others here. Call Mac and see what they'll do.. Hopefully they help you out. If they do not replace it, look at a set of new headers. Car deserves better anyway lol. Car looks great btw. Nice to see those wheels are still looking sharp!