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Forum namePerformance/Engine
Topic subjectCustom Exhaust Question. .Help Needed
Topic URLhttps://forums.2gnt.com/dcboard.php?az=show_topic&forum=i5&topic_id=79837
79837, Custom Exhaust Question. .Help Needed
Posted by EclipseTenzoR, Aug-29-04 12:06 PM
I was looking at exhaust setups and I have my eye set on Apexi or Thermal. Now the prefab setups are freakin expensive, and I was curious. If I bought their muffler and got the piping done custom, would that be exactly the same?
79838, RE: Custom Exhaust Question. .Help Needed
Posted by kelvinb1, Aug-29-04 12:37 PM
Originally posted by EclipseTenzoR
I was looking at exhaust setups and I have my eye set on Apexi or Thermal. Now the prefab setups are freakin expensive, and I was curious. If I bought their muffler and got the piping done custom, would that be exactly the same?


well obviously not exactly the same. the shops will probly follow the stock exhaust and go over the suspension. i dont know of any performance difference from going under to over though. youll probly be charged like 100-200 for a custom catback though
79839, RE: Custom Exhaust Question. .Help Needed
Posted by BuckNutty, Aug-29-04 12:40 PM
i got a custom exhaust built from header all the way back...the cost of 2.5" piping bent to fit up to my hotshot header, catco high flow cat, and vivrant mufflar was $300...that included taking off my old stuff, junking it, and installing all the new stuff.

With the parts i spent about $750 for a header back.
79840, RE: Custom Exhaust Question. .Help Needed
Posted by kelvinb1, Aug-29-04 12:43 PM
Originally posted by BuckNutty
i got a custom exhaust built from header all the way back...the cost of 2.5" piping bent to fit up to my hotshot header, catco high flow cat, and vivrant mufflar was $300...that included taking off my old stuff, junking it, and installing all the new stuff. With the parts i spent about $750 for a header back.


ok i was estimating, but he just gave you the price so.. better have some cash!
79841, RE: Custom Exhaust Question. .Help Needed
Posted by EclipseTenzoR, Aug-29-04 12:43 PM
What are the disadvantages to just doing an axle back?

Note That I Am N/A
79842, RE: Custom Exhaust Question. .Help Needed
Posted by BuckNutty, Aug-29-04 01:09 PM
well...i didn't think $300 was too bad for install and the custom bends :shrug

What got me was all the parts i was putting on it. I would reccommend anyone to do it...personally i don't see whats so great about the expensive after market exhausts...Find a mufflar shop that does mandrel bends and you are in business...mine is pressure bent, but our bends are nothing too rough, so they didn't get crushed down too much.
79844, RE: Custom Exhaust Question. .Help Needed
Posted by Green, Aug-29-04 01:30 PM
If your guy doesn't do mandrel bends and uses mild steel, you're better off going with any of these:

http://search.ebay.com/eclipse-cat-exhaust_W0QQfromZR8QQsasaleclassZ2QQsbrbinZtQQsosortorderZ1QQsosortpropertyZ3
79845, RE: Custom Exhaust Question. .Help Needed
Posted by EclipseTenzoR, Aug-29-04 01:57 PM
Yea but those are knock offs and explain to me what mendrel bends are and about the steel? I'm curious here. Also I can get an Apexi N1 Muffler for $165 and its brand new.. Not a knock off.
79899, RE: Custom Exhaust Question. .Help Needed
Posted by Green, Aug-30-04 07:01 PM
Even the knockoff cat-backs are better than getting a nice muffler and having non-mandrel bends in the pipe. Most shops use crush/press bends with mild steel.

I've done your homework and looked up references:

For mandrel bending:
http://www.vansantent.com/definitions.htm

For mild/stainless steel comparison:
http://www.burnsstainless.com/TechArticles/Stainless_article/stainless_article.html

and also, i would get one that comes with a removable/tunable silencer in the tip...


79911, RE: Custom Exhaust Question. .Help Needed
Posted by Michael_97RS, Aug-31-04 08:23 AM
Consider materials.

Most will use aluminized pipe, or even mild steel which is beging to rust, if you are lucky you at least get aluminized, mandral bent, more often than not you will get press bent unless you go to a performance shop, then they should be able to get you stainless.

High end exhaust systems will use mostly 304 SS, better would be 304L, and if you really get the good stuff you are getting 321 or 321L SS. But it is not cheap, the price for SS is higher and so is the price for mandral bent stainless.

It's a matter of you want to get.



Exile Racing Technologies: http://www.exileracing.com
So. All that's left, is... everything - Jesse James
79921, RE: Custom Exhaust Question. .Help Needed
Posted by silvereclipse30, Aug-31-04 12:45 PM
I have a fully SS 2.5 mandrel bend tsudo N-1 catback for sale for 225......The catback has less then 1K so its bsically brand new......it sounds badass and I would be keepin it but I'm sellin the car....PM me if ur interested!!!
79947, RE: Custom Exhaust Question. .Help Needed
Posted by Ducking_Fumbass, Aug-31-04 06:22 PM
Yeah. Get some bends from Burns. Get some stainless to go with it. Walk into Midas with them and ask them to weld it all together.

Know what they'd say?

Get bent. Stainless Steel isn't something that can be welded together with an arc welder, or even a Mig welder. To get stainless together, it should be Tig welded.

By the time you buy the stainless bends, the stainless pipe, and the stainless muffler, you are better off buying a name brand, costwise.

If you want to do it the other way, however, feel free. You will pay more for an exhaust that flows less well, unless it gets welded from the inside out, and the welds on the inside are ground flat.

So yeah, if you're going to do it, do it right. By the way, going under the axle reduces the radius of a couple of the bends. The problem, however, is ground clearance.