Muffler delete getting rear bumper really hot - Toyota GR86, 86, FR-S and Subaru BRZ Forum & Owners Community

ML · 10-04-2012, 10:10 PM

I Took my muffler off tonight to hear what it sounds like and drove it around the block. I when I got back I noticed that the rear plastic of the bumper was very hot for obvious reasons. if I leave it off for a day will the heat hurt the plastic?

MmmHamSandwich · 10-04-2012, 10:17 PM

There was another thread about this somewhere with pictures.

Long story short, it most certainly can ruin your bumper.

fmsida · 10-04-2012, 10:18 PM

Quote:

Originally Posted by ML

I Took my muffler off tonight to hear what it sounds like and drove it around the block. I when I got back I noticed that the rear plastic of the bumper was very hot for obvious reasons. if I leave it off for a day will the heat hurt the plastic?

This issue has been talked about plenty of times in here. To answer your question, most likely it will. There's a video of a guy doing what you did, and melted his entire bumper off between minutes. Get a track pipe from nameless performance, berk technology, or mach V dan..

$150 tops.

White64Goat · 10-04-2012, 10:19 PM

Yeah, there were pictures of a guy who did the same thing at a track and it melted the whole left rear/side of the bumper. Get a tailpipe or put the muffler back on. Not warranty if melted...........search for a post entitled 'don't try this'.

MmmHamSandwich · 10-04-2012, 10:25 PM

Found it! Here's some video of the aftermath...

[ame="http://www.youtube.com/watch?v=B7IgBEyxjKc&feature=relmfu"]video of the aftermath.[/ame]

Should add this was apparently only after a couple minutes on the track. You can see the taillight, trunk lid, and probably more things were damaged as well.

jeebus · 10-04-2012, 10:40 PM

As everyone has said, buy a delete pipe or have one made. I pulled the muffler off my NB miata once. Drove maybe 5 miles. When I got home I was like "wtf?" My miata badge was falling off, hanging on barely. So I went to grab it and it was burning hot! Touched the bumper and it was too. Glad I noticed. I was planning on leaving the muffler off until I got to an exhaust shop.

ML · 10-04-2012, 10:47 PM

wow....so close to disaster. Thanks

Miniata · 10-05-2012, 04:01 PM

My Nameless Performance muffler delete pipe was only $100 and I've had no issues with the bumper getting too hot. Love the sound (not as loud as I expected) and weight reduction of the muffler delete pipe.

ST185RC · 10-05-2012, 04:20 PM

When you see that the stock exhaust path aims up back into the rear bumper section without a muffler, what did you expect? it's not a warm breeze coming out from that pipe. It's 100-150 centigrade and mufflers can grill a steak after a 15 minute commute.

I've seen all sorts of nasty rear ends even with a pipe that goes past the rear bumper. Soot from running rich, 5" tips that still melt the bumper, yellow/browning of white bumpers on hella sick straight piped s13/14, DIY cut outs of rear bumper section, rust stains from bottoming out the hellaflush rides.

Do yourself a favour and buy a real muffler delete pipe.

celica73 · 10-05-2012, 05:08 PM

^^^^

Thanks for posting that!

carbonBLUE · 10-06-2012, 04:03 PM

Quote:

Originally Posted by ML

I Took my muffler off tonight to hear what it sounds like and drove it around the block. I when I got back I noticed that the rear plastic of the bumper was very hot for obvious reasons. if I leave it off for a day will the heat hurt the plastic?

i just put in a spacer, rear bumper doesnt get hot at all but you can still hear the car, did a 2 hour run through the hills a few weeks ago, nothing melted, nothing was even hot

ML · 10-06-2012, 06:09 PM

Quote:

Originally Posted by carbonBLUE

i just put in a spacer, rear bumper doesnt get hot at all but you can still hear the car, did a 2 hour run through the hills a few weeks ago, nothing melted, nothing was even hot

Sorry if this is stupid, but what do you mean by spacer?

carbonBLUE · 10-06-2012, 06:41 PM

Quote:

Originally Posted by ML

Sorry if this is stupid, but what do you mean by spacer?

removed both bolts to the muffler, take out the gasket, put 5 washers between the muffler and catback, tighten down bolts

allows some air to escape the exhaust system, in reality its just a really big exhaust leak lol... im still up in the air on what exhaust i want but needed some exhaust sound in my life so that is my temp fix till i decide

personally i like the way it sounds, i may just buy the single exit w/ exhaust tip for $150, it does drone though because the noise comes out behind the bumper but its not as loud as my last car so i dont really mind

ML · 10-06-2012, 06:43 PM

Interesting. Keep me updated on this, or start a new thread

10-04-2012, 10:17 PM	#2
MmmHamSandwich You know you want it. Join Date: Mar 2012 Drives: '13 FR-S Location: RVA Posts: 705 Thanks: 160 Thanked 327 Times in 154 Posts Mentioned: 9 Post(s) Tagged: 2 Thread(s)	There was another thread about this somewhere with pictures. Long story short, it most certainly can ruin your bumper. __________________ The Following User _________ Stay_Puft(09-13-2014) Says Thank You to MmmHamSandwich For This Useful Post:

10-04-2012, 10:25 PM	#5
MmmHamSandwich You know you want it. Join Date: Mar 2012 Drives: '13 FR-S Location: RVA Posts: 705 Thanks: 160 Thanked 327 Times in 154 Posts Mentioned: 9 Post(s) Tagged: 2 Thread(s)	Found it! Here's some video of the aftermath... [ame="http://www.youtube.com/watch?v=B7IgBEyxjKc&feature=relmfu"]video of the aftermath.[/ame] Should add this was apparently only after a couple minutes on the track. You can see the taillight, trunk lid, and probably more things were damaged as well. __________________ The Following User _________ Stay_Puft(09-13-2014) Says Thank You to MmmHamSandwich For This Useful Post:

10-04-2012, 10:40 PM	#6
jeebus Senior Member Join Date: Jul 2012 Drives: 2015 Mustang GT (on order) Location: San Diego Posts: 904 Thanks: 114 Thanked 471 Times in 208 Posts Mentioned: 9 Post(s) Tagged: 0 Thread(s)	As everyone has said, buy a delete pipe or have one made. I pulled the muffler off my NB miata once. Drove maybe 5 miles. When I got home I was like "wtf?" My miata badge was falling off, hanging on barely. So I went to grab it and it was burning hot! Touched the bumper and it was too. Glad I noticed. I was planning on leaving the muffler off until I got to an exhaust shop. __________________

10-05-2012, 04:01 PM	#8
Miniata Senior Member Join Date: Mar 2012 Drives: 13 BRZ - 90 Miata - 07 FXT -05 Mini Location: Ohio Posts: 546 Thanks: 6 Thanked 142 Times in 105 Posts Mentioned: 2 Post(s) Tagged: 0 Thread(s)	My Nameless Performance muffler delete pipe was only $100 and I've had no issues with the bumper getting too hot. Love the sound (not as loud as I expected) and weight reduction of the muffler delete pipe. __________________ 17x7 Kosei K1-TS w/ 215/45-17 Dunlop Star Specs Nameless Track Pipe - Strano front sway bar

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10-04-2012, 10:19 PM	#4
White64Goat Senior Member Join Date: Jun 2012 Drives: 13 BRZ CBS LTD MT, 02 WRX Location: Fred. Co. Md. Posts: 2,351 Thanks: 65 Thanked 1,113 Times in 628 Posts Mentioned: 19 Post(s) Tagged: 1 Thread(s)	Yeah, there were pictures of a guy who did the same thing at a track and it melted the whole left rear/side of the bumper. Get a tailpipe or put the muffler back on. Not warranty if melted...........search for a post entitled 'don't try this'.

10-05-2012, 04:20 PM	#9
ST185RC Senior Member Join Date: Jul 2012 Drives: White Out FR-S Location: Canada Posts: 672 Thanks: 31 Thanked 511 Times in 242 Posts Mentioned: 1 Post(s) Tagged: 0 Thread(s)	When you see that the stock exhaust path aims up back into the rear bumper section without a muffler, what did you expect? it's not a warm breeze coming out from that pipe. It's 100-150 centigrade and mufflers can grill a steak after a 15 minute commute. I've seen all sorts of nasty rear ends even with a pipe that goes past the rear bumper. Soot from running rich, 5" tips that still melt the bumper, yellow/browning of white bumpers on hella sick straight piped s13/14, DIY cut outs of rear bumper section, rust stains from bottoming out the hellaflush rides. Do yourself a favour and buy a real muffler delete pipe.

10-05-2012, 05:08 PM	#10
celica73 Senior Member Join Date: Jun 2012 Drives: '13 BRZ / '11 Outback / '06 Tundra Location: Durham NC Posts: 510 Thanks: 6 Thanked 155 Times in 104 Posts Mentioned: 4 Post(s) Tagged: 0 Thread(s)	^^^^ Thanks for posting that!

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