M3 exhaust modification

Periokid · 12-10-2009, 07:46 AM

Quote:

Originally Posted by Subw00er

Looks like the welder had some trouble there!

I guess it doesnt matter, who's going to see it.

When are you mounting it up?

Tomorrow is the day. I should be able to install it and get some video.

My welder did complain to me that my cuts were too thick.

BTW, does anyone remember a thread where someone replaced the rear rubber exhaust mounts with black ones? I'd like to pick some up but I forget where he got them and what the part # was.

Kyoshi71 · 12-10-2009, 07:50 AM

What kind of paint did you use?
The welds needed to be wide to fill the cuts?

Looking forward to seeing it mounted.

Periokid · 12-10-2009, 10:07 AM

Quote:

Originally Posted by Kyoshi71

What kind of paint did you use?
The welds needed to be wide to fill the cuts?

Looking forward to seeing it mounted.

Rustoleum flat black paint was used.

Yes, my cuts were wide so the welds needed to be wide.

If I did it again I would use a thinner cutting disc. Live and learn.

Kyoshi71 · 12-10-2009, 10:13 AM

Quote:

Originally Posted by Periokid

Rustoleum flat black paint was used.

Yes, my cuts were wide so the welds needed to be wide.

If I did it again I would use a thinner cutting disc. Live and learn.

Do you think Rustoleum™ will hold up well?
(you dig that trademark?...alt+0153

)

Periokid · 12-10-2009, 10:33 AM

Quote:

Originally Posted by Kyoshi71

Do you think Rustoleum™ will hold up well?
(you dig that trademark?...alt+0153

)

Time will tell. Repainting it takes about 1 minute.

Subw00er · 12-10-2009, 05:40 PM

Wished you painted the tips too. I was curious to see how that would hold up. I was tempted to paint mine when I had it off.

Periokid · 12-10-2009, 08:48 PM

Quote:

Originally Posted by Subw00er

Wished you painted the tips too. I was curious to see how that would hold up. I was tempted to paint mine when I had it off.

I like chrome tips so black is out for me.

Getting ready for tomorrow. I have the day off and it is car project day. Too bad it is freezing cold out

But garage has heat

Poppin Fresh · 12-10-2009, 09:59 PM

Dude, I can't wait to hear this!

Periokid · 12-11-2009, 11:35 AM

It is on!!

Poppin Fresh · 12-11-2009, 02:10 PM

Dude, how does it sound? Any drone?

Moxie · 12-11-2009, 02:32 PM

Quote:

Originally Posted by Poppin Fresh

Dude, how does it sound? Any drone?

Let's hear it - Seems like we've been waiting forever -

Periokid · 12-11-2009, 04:06 PM

I have good news...no drone!!

I am working on video right now.

mtl88 · 12-11-2009, 05:00 PM

Looks fantastic! I can't wait to hear it!

Periokid · 12-11-2009, 07:11 PM

OK, Here it is!!! It sounds awesome and is very comfortable on the ears. I am super sensitive to drone and resonance and this is perfect!

Poppin Fresh · 12-11-2009, 07:57 PM

Congratulations on your research and time dedicated man! Looks like I'll be heading out to my local mechanic for sum exhaust work.

Sounds good as hell man!

Periokid · 12-11-2009, 08:48 PM

Subw00fer was right when he said it is hard to depict the sound of an exhaust using a camcorder. Inside the car is especially hard.

Eurotrash8 · 12-11-2009, 10:21 PM

Nice wok "Gummer"

All your hard work and time seemed to have paid off as it really sounds good.

BTW love your plate

Poppin Fresh · 12-11-2009, 11:16 PM

So you left the smaller holes open and wrapped the larger holes. What type of tape did you use by the way? How much of the insulating wool did you put back inside before you welded it shut? Thank you in advance. Again, good job!

gemini330zhp · 12-12-2009, 12:43 AM

Sounds great nice job!!!!!

sehrgut · 12-12-2009, 04:39 AM

WTF!?!?! Legitimate job bro. Wondering...what made you re-stuff the chambers? Was it to loud? Did no stuffing cause to much backfire?

Awesome job though, props!!!!

Periokid · 12-12-2009, 07:51 AM

Quote:

Originally Posted by Poppin Fresh

So you left the smaller holes open and wrapped the larger holes. What type of tape did you use by the way? How much of the insulating wool did you put back inside before you welded it shut? Thank you in advance. Again, good job!

The small holes were originally covered by a steel wool like material. I cut that away. I then wrapped the large set of holes (the pipes with the higher amount of holes) with exhaust repair tape that cures when heated. That tape was also secured with clamps. I then put back ALL of the sound absorbing material.

Periokid · 12-12-2009, 07:56 AM

Quote:

Originally Posted by sehrgut

WTF!?!?! Legitimate job bro. Wondering...what made you re-stuff the chambers? Was it to loud? Did no stuffing cause to much backfire?

Awesome job though, props!!!!

When I did a trial run, I had wrapped all the holes and then did a test. The first video in this thread is the first attempt. When I started the car, I was like OMG, I thought the house would come down!

The video is post #45: http://www.m3post.com/forums/showpos...7&postcount=45

and

#46 http://www.m3post.com/forums/showpos...2&postcount=46

It was too loud and I felt I needed to open up a few holes and put the sound absorbing material back in to absorb the sound that would come out of those reopened holes. The backfire in those early videos has not occurred again.

12-10-2009, 07:50 AM	#112
Kyoshi71 Colonel 93 Rep 2,528 Posts Drives: 2010 M3 Coupe Join Date: Jul 2006 Location: New York iTrader: (0)	What kind of paint did you use? The welds needed to be wide to fill the cuts? Looking forward to seeing it mounted.
	Appreciate 0 Quote

12-10-2009, 05:40 PM	#116
Subw00er Bates '08 Interlagos Launch 126 Rep 1,230 Posts Drives: 440i xGC, ZL1, JCW Join Date: Nov 2005 Location: NY iTrader: (2)	Wished you painted the tips too. I was curious to see how that would hold up. I was tempted to paint mine when I had it off. __________________ Custom Exhaust Project: Bates Valvetronic exhaust: http://www.m3post.com/forums/showthread.php?t=253661 -- Exhaust Mod pics in here: http://www.flickr.com/photos/40236795@N03/ DON'T BUY Race Ready Performance electronic cutout valves. Here's why: http://www.m3post.com/forums/showthr...40#post9589740
	Appreciate 0 Quote

12-10-2009, 09:59 PM	#118
Poppin Fresh Colonel 86 Rep 2,148 Posts Drives: With a sunroof and front plate Join Date: May 2009 Location: Bergen County NJ iTrader: (0)	Dude, I can't wait to hear this! __________________
	Appreciate 0 Quote

12-11-2009, 11:35 AM	#119
Periokid First Lieutenant 51 Rep 335 Posts Drives: 2015 F80 M3 Join Date: Apr 2009 Location: LI, NY iTrader: (0)	It is on!!
	Appreciate 0 Quote

12-11-2009, 02:10 PM	#120
Poppin Fresh Colonel 86 Rep 2,148 Posts Drives: With a sunroof and front plate Join Date: May 2009 Location: Bergen County NJ iTrader: (0)	Dude, how does it sound? Any drone? __________________
	Appreciate 0 Quote

12-11-2009, 04:06 PM	#122
Periokid First Lieutenant 51 Rep 335 Posts Drives: 2015 F80 M3 Join Date: Apr 2009 Location: LI, NY iTrader: (0)	I have good news...no drone!! I am working on video right now.
	Appreciate 0 Quote

12-11-2009, 05:00 PM	#123
mtl88 Second Lieutenant 52 Rep 206 Posts Drives: 2011 1M VO Join Date: May 2009 Location: Austin, Texas iTrader: (1)	Looks fantastic! I can't wait to hear it!
	Appreciate 0 Quote

12-11-2009, 07:11 PM	#124
Periokid First Lieutenant 51 Rep 335 Posts Drives: 2015 F80 M3 Join Date: Apr 2009 Location: LI, NY iTrader: (0)	OK, Here it is!!! It sounds awesome and is very comfortable on the ears. I am super sensitive to drone and resonance and this is perfect! Last edited by Periokid; 01-26-2015 at 11:17 AM..
	Appreciate 1 Assimilator1591.50 Quote

12-11-2009, 07:57 PM	#125
Poppin Fresh Colonel 86 Rep 2,148 Posts Drives: With a sunroof and front plate Join Date: May 2009 Location: Bergen County NJ iTrader: (0)	Congratulations on your research and time dedicated man! Looks like I'll be heading out to my local mechanic for sum exhaust work. Sounds good as hell man! __________________
	Appreciate 0 Quote

12-11-2009, 08:48 PM	#126
Periokid First Lieutenant 51 Rep 335 Posts Drives: 2015 F80 M3 Join Date: Apr 2009 Location: LI, NY iTrader: (0)	Subw00fer was right when he said it is hard to depict the sound of an exhaust using a camcorder. Inside the car is especially hard.
	Appreciate 0 Quote

12-11-2009, 10:21 PM	#127
Eurotrash8 Captain 70 Rep 628 Posts Drives: 2008 E92 M3 Join Date: Sep 2007 Location: Calgary, Alberta iTrader: (4)	Nice wok "Gummer" All your hard work and time seemed to have paid off as it really sounds good. BTW love your plate __________________
	Appreciate 0 Quote

12-11-2009, 11:16 PM	#128
Poppin Fresh Colonel 86 Rep 2,148 Posts Drives: With a sunroof and front plate Join Date: May 2009 Location: Bergen County NJ iTrader: (0)	So you left the smaller holes open and wrapped the larger holes. What type of tape did you use by the way? How much of the insulating wool did you put back inside before you welded it shut? Thank you in advance. Again, good job! __________________
	Appreciate 0 Quote

12-12-2009, 12:43 AM	#129
gemini330zhp Major 34 Rep 1,181 Posts Drives: 2008 M3 E90 Join Date: Jul 2005 Location: BergenCo NewJersey iTrader: (0)	Sounds great nice job!!!!! __________________ 2008 Jet Black E90 M3 6SPD no sunroof and 18s to my specs
	Appreciate 0 Quote

12-12-2009, 04:39 AM	#130
sehrgut Major 33 Rep 1,033 Posts Drives: emthree Join Date: Oct 2009 Location: socal iTrader: (1)	WTF!?!?! Legitimate job bro. Wondering...what made you re-stuff the chambers? Was it to loud? Did no stuffing cause to much backfire? Awesome job though, props!!!!
	Appreciate 0 Quote