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> Official "custom" exhaust thread, for all engines
post Aug 20, 2008 - 12:10 PM
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GotToyota



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Since there is an exhaust thread pretty much every other day, I thought it would be good to make one for those looking to make their own custom exhaust. Many people tend to go this way because the aftermarket systems for our cars are becoming more and more difficult to find. Let's begin?

What size piping would be best for my GT/ST//GT4/etc?
This question really depends on your goals for the car, and what you do with it. My typical rule of thumb that has worked best for me, is 2.5" and below for N/A vehicles, and 3"-3.5" for turbo'd vehicles. The bigger the piping on an N/A, the more bottom end you will lose, however, you will gain better top end. Find your trade off point.

What about mufflers?
This is where it gets interesting. The muffler you use will determine how your car sounds. There are many different ones out there, and different types. You can have the traditional canisters, which you see mainly in the tuner scene, then there's the Magnaflow/Flowmaster type. Here are pictures showing each:

Canister:


Flowmaster/Magnaflow:


The difference in these mufflers comes from inside. Quality mufflers will have better construction and better quality inside baffling, which will bring out nice sound from your exhaust. Cheap mufflers like the ones you see on Ebay will use sound metallic and tacky. My personal recommendation if you choose to get a canister would be either the Megan Racing N1 replica ($70-$80 on Ebay), or the OBX B10 ($50-$60 on Ebay).

How do I get the piping?
Now here comes the fun part. After you've purchased your muffler and decided on your piping size, you get the piping itself. You can buy DIY exhaust kits online, which are fine if you know how to weld, but otherwise I recommend going to a local exhaust shop. From here, you can tell them what you're wanting out of your exhaust system, plus you can customize your muffler placement/angle, as well as the design of the piping, so that you can get the most straight piping possible for your setup. I paid $130 for 2.5" piping on my Supra, this included the piping itself, a resonator, and the labor to put everything on. You will want to get piping from the cat to the back of the car. Basically they cut the piping off from where it runs into your cat, and then weld on bigger piping. Many exhaust shops will NOT condone the removing of your cat, nor do I condone it. This brings problems with emissions, as well as state inspections, not to mention your car will sound like crap. I highly recommend getting a resonator added in with your piping to ensure a better sounding exhaust, you'll be glad you did it.

Here is my final result with my Supra:









I hope this will give you guys a better understanding on what to look for and get when wanting to get an exhaust system.

-Matt

This post has been edited by GotToyota: Aug 26, 2008 - 9:44 PM
 
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post Aug 26, 2008 - 9:34 PM
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Athorn



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what if i went catless and got a resonater?

Posts in this topic
- GotToyota   Official "custom" exhaust thread   Aug 20, 2008 - 12:10 PM
- - KAOS   Awesome write up Matt - thank you!   Aug 20, 2008 - 12:26 PM
- - elastikman   Niceee post! Dont forget the Greedy (or repl...   Aug 20, 2008 - 7:46 PM
- - GotToyota   Let's get this stickied!   Aug 22, 2008 - 7:24 AM
- - Spider77   Yeah, you got a point. Everyday I see some questi...   Aug 22, 2008 - 3:21 PM
- - Athorn   I just got the obx muffler put on last week. I did...   Aug 23, 2008 - 5:06 PM
- - windowlicker   what diameter piping does the 1.8 liter have? jus...   Aug 24, 2008 - 6:09 PM
- - GotToyota   I NEVER recommend welding a new muffler onto the s...   Aug 24, 2008 - 6:11 PM
|- - windowlicker   QUOTE (GotToyota @ Aug 24, 2008 - 7...   Aug 24, 2008 - 7:16 PM
- - Athorn   I know you did not recomend it but i told the muff...   Aug 24, 2008 - 6:34 PM
- - GotToyota   You can go with that muffler, but you'll be g...   Aug 24, 2008 - 7:06 PM
- - Athorn   IS it the larger piping that gives you the sound b...   Aug 24, 2008 - 8:46 PM
|- - GotToyota   QUOTE (Athorn @ Aug 24, 2008 - 8:46 ...   Aug 26, 2008 - 12:24 PM
- - Akirad1   who me mine sounds pretty good but i put the silen...   Aug 26, 2008 - 8:11 PM
- - Nyczroflz   yup... going catless def makes it louder... someti...   Aug 26, 2008 - 9:01 PM
- - Athorn   what if i went catless and got a resonater?   Aug 26, 2008 - 9:34 PM
|- - GotToyota   QUOTE (Athorn @ Aug 26, 2008 - 9:34 ...   Aug 26, 2008 - 9:45 PM
- - Athorn   What will a respnater do? i dont think it cant be ...   Aug 26, 2008 - 10:39 PM
- - Akirad1   makes it quiter and its apart of emmisions so they...   Aug 26, 2008 - 10:44 PM
- - Athorn   Does it come stock with a resonater?   Aug 26, 2008 - 10:51 PM
- - Akirad1   cars yes they do its like the law or something lol   Aug 26, 2008 - 11:27 PM
- - Athorn   Well i hope getting the larger piping will make th...   Aug 27, 2008 - 12:21 AM
- - Akirad1   i dunno about that did you ever get the silencer o...   Aug 27, 2008 - 8:18 AM
- - Athorn   lol yes... after about in hour of pulling/twisting...   Aug 27, 2008 - 11:37 AM
- - AnaXyd   The Megan muffler, is this a noisy muffler? Or a s...   Aug 27, 2008 - 2:29 PM
- - Athorn   So when the cut out the old muffler and piping the...   Aug 27, 2008 - 4:45 PM
- - Akirad1   no the resonators by the cat i believe its b4 it b...   Aug 27, 2008 - 5:06 PM
- - 95CelicaST   Resonators are there to... well exactly what they ...   Aug 27, 2008 - 5:28 PM
- - GriffGirl   IIRC the stock exhaust on an ST is 2.25". If ...   Aug 27, 2008 - 5:55 PM
|- - 95CelicaST   QUOTE (GriffGirl @ Aug 27, 2008 - 3...   Aug 28, 2008 - 12:22 PM
- - GotToyota   The resonator is separate from the cat, and is som...   Aug 28, 2008 - 4:59 PM
- - Jaws4God   i can't find what size the stock exhaust is fo...   Aug 31, 2008 - 9:15 PM
|- - presure2   QUOTE (Jaws4God @ Aug 31, 2008 - 10...   Sep 1, 2008 - 8:31 AM
- - GTSOwner   What's the largest diameter exhaust you can ru...   Sep 2, 2008 - 6:13 AM
|- - presure2   QUOTE (GTSOwner @ Sep 2, 2008 - 7:13...   Sep 2, 2008 - 5:04 PM
|- - hurley97   QUOTE (presure2 @ Sep 2, 2008 - 6:04...   Sep 23, 2008 - 6:05 AM
|- - presure2   QUOTE (hurley97 @ Sep 23, 2008 - 7:0...   Sep 26, 2008 - 4:43 PM
- - 97lestyousay   That pulled up pretty nice, the first pics I saw w...   Sep 2, 2008 - 11:05 PM
- - Terracar   Here is a clear explanation of each a resonator an...   Sep 3, 2008 - 8:57 AM
- - Terracar   Also wanted to add, man that exhaust work looks ve...   Sep 3, 2008 - 9:02 AM
|- - KAOS   QUOTE (Terracar @ Sep 3, 2008 - 8:02...   Sep 3, 2008 - 11:08 AM
- - GotToyota   Bump up.   Sep 20, 2008 - 2:25 PM
- - elastikman   Maybe next week the defective header i get from eb...   Sep 21, 2008 - 2:13 PM
|- - GotToyota   QUOTE (elastikman @ Sep 21, 2008 - 2...   Sep 22, 2008 - 9:29 PM
||- - elastikman   QUOTE (GotToyota @ Sep 22, 2008 - 10...   Sep 23, 2008 - 6:53 PM
||- - GotToyota   QUOTE (elastikman @ Sep 23, 2008 - 6...   Sep 23, 2008 - 9:12 PM
|- - elastikman   QUOTE (elastikman @ Sep 21, 2008 - 3...   Sep 26, 2008 - 7:13 PM
- - 97celiman   hey matt what was the name of the exhaust shop tha...   Sep 22, 2008 - 9:44 PM
|- - GotToyota   QUOTE (97celiman @ Sep 22, 2008 - 9...   Sep 22, 2008 - 10:27 PM
- - Daftboy   I did all of mine with magnaflow, muffer cat and r...   Sep 25, 2008 - 12:52 PM
- - GotToyota   Sounds nice, any pictures?   Sep 25, 2008 - 1:26 PM
- - Daftboy   Ummm some where...lol...ill look around for them   Sep 25, 2008 - 1:34 PM
- - Dr_Tweak   Did you get a good price on the Vibrant stuff? I c...   Sep 26, 2008 - 4:52 PM
|- - presure2   QUOTE (Dr_Tweak @ Sep 26, 2008 - 5:5...   Sep 26, 2008 - 5:30 PM
|- - Dr_Tweak   QUOTE (presure2 @ Sep 26, 2008 - 11...   Sep 26, 2008 - 5:56 PM
|- - presure2   QUOTE (Dr_Tweak @ Sep 26, 2008 - 6:5...   Sep 27, 2008 - 7:18 AM
|- - hurley97   QUOTE (Dr_Tweak @ Sep 26, 2008 - 6:5...   Sep 28, 2008 - 6:03 PM
- - Daftboy   the 7afe has 2 stock O2 sensors   Sep 26, 2008 - 5:30 PM
- - mitchy   my dad said he would make me a sports exhaust for ...   Sep 26, 2008 - 6:06 PM
|- - Dr_Tweak   QUOTE (mitchy @ Sep 27, 2008 - 12:06...   Sep 26, 2008 - 7:30 PM
- - elastikman   Here is, like promise! 4-2-1 Header with DEI ...   Sep 27, 2008 - 10:59 AM
- - njccmd2002   now that we are talking about exhaust. can somebod...   Sep 28, 2008 - 1:10 PM
- - presure2   the smaller one is the cat, the bigger muffler loo...   Sep 28, 2008 - 1:21 PM
- - njccmd2002   ok so it flows like this. header -> Cat-...   Sep 28, 2008 - 5:40 PM
|- - elastikman   QUOTE (njccmd2002 @ Sep 28, 2008 - 6...   Sep 28, 2008 - 7:31 PM
- - 97celiman   i dunno i have 2 cats...maybe its a obd thing??? i...   Sep 28, 2008 - 8:20 PM
- - njccmd2002   i tought 97 gt have a cat in the header, thus 2   Sep 29, 2008 - 6:37 AM
- - delusionz   I beg to differ on a number of points, but what I ...   Sep 29, 2008 - 7:19 AM
- - GriffGirl   For those of us for whom a cat is required, there...   Sep 29, 2008 - 5:40 PM
- - DEATH   A $100 magnaflow hiflow does the trick for al...   Sep 29, 2008 - 5:51 PM
- - hurley97   I've been driving my car with a straight exhau...   Sep 29, 2008 - 7:26 PM
- - DEATH   Oh that is an awesome idea. Will defintely help th...   Sep 30, 2008 - 8:26 AM
- - delusionz   Out of curiosity why would you want the o2 sensor ...   Sep 30, 2008 - 9:03 AM
- - hurley97   The second o2 sensor after the cat does nothing bu...   Oct 1, 2008 - 6:35 AM
- - 95CelicaST   What I did on my WRX (and I know this has no pract...   Oct 1, 2008 - 8:29 AM
- - elastikman   Hey! Whats best option ? 1x 18" resonato...   Oct 3, 2008 - 12:46 PM
|- - hockeyplyr24   hey everyone figured i'd show ya my muffler. ...   Oct 3, 2008 - 5:18 PM
- - elastikman   Thats a BIG muth*f**er muffler!!! eheh...   Oct 3, 2008 - 5:48 PM
- - GotToyota   Nice work, but I personally don't like how man...   Oct 3, 2008 - 6:05 PM
|- - hockeyplyr24   yeah i wanted it to have more of an upward tilt..b...   Oct 3, 2008 - 6:22 PM
|- - GotToyota   QUOTE (hockeyplyr24 @ Oct 3, 2008 - 6...   Oct 3, 2008 - 8:50 PM
|- - hockeyplyr24   QUOTE (GotToyota @ Oct 3, 2008 - 8:5...   Oct 3, 2008 - 11:58 PM
|- - GotToyota   QUOTE (hockeyplyr24 @ Oct 3, 2008 - 11...   Oct 4, 2008 - 12:58 AM
||- - hockeyplyr24   QUOTE (GotToyota @ Oct 4, 2008 - 12...   Oct 4, 2008 - 11:35 AM
||- - GotToyota   Sounds nice. If you stumble around a video camera ...   Oct 4, 2008 - 12:48 PM
|- - parriehunter   QUOTE (hockeyplyr24 @ Oct 4, 2008 - 12...   Oct 4, 2008 - 8:38 PM
|- - hockeyplyr24   QUOTE (parriehunter @ Oct 4, 2008 - 8...   Oct 5, 2008 - 1:33 PM
|- - parriehunter   QUOTE (hockeyplyr24 @ Oct 5, 2008 - 1...   Oct 5, 2008 - 7:21 PM
- - mneal2_92788   mine is just the stock exhaust with no muffler. cu...   Oct 5, 2008 - 1:38 PM
- - AnaXyd   Whats the standard piping of the 7AFE engine? I am...   Oct 5, 2008 - 3:09 PM
- - GotToyota   I believe the smallest they have is 2.5" inle...   Oct 5, 2008 - 3:15 PM
- - mitchy   does anyone know what difference to the sound of a...   Oct 7, 2008 - 3:30 AM
- - 95CelicaST   EVO. I know how it sounds, and it is good.   Oct 7, 2008 - 5:27 PM
- - GotToyota   I personally like the OBX WS. I didn't know th...   Oct 7, 2008 - 6:07 PM
- - mitchy   can you describe the sound they make? i kinda want...   Oct 8, 2008 - 1:27 AM
|- - GotToyota   QUOTE (mitchy @ Oct 8, 2008 - 1:27 A...   Oct 8, 2008 - 8:26 PM
- - Random_Stranger   Got my exhaust off ebay for $30 shipped. Tri...   Oct 8, 2008 - 1:49 AM
- - Blk94St   I just got my new JDM 7afe today, put in monday ...   Dec 17, 2008 - 4:00 PM
- - Akirad1   st id say 2.25 or 2.5, and just got to your local ...   Dec 17, 2008 - 6:52 PM
- - Blk94St   is this the obx you were talking about? I want a ...   Dec 22, 2008 - 3:58 PM
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