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Duals do-over


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Finally going to redo my exhaust to gain clearance - remove resonators , add performance cat , and all new pipe from to back to front 

Besides the awkward and painful positions to do exhausts without a 6ft lift , I kind of enjoy crafting an exhaust system . 
 

I just buy and bunch of mandrel bends and pie cut what I need . Dual 2” gets tight :-0

Starting the first leg getting to the cat . 
 

Might challenge myself to TIG it 

FA635CB6-7C32-48B2-B87B-036BA224B0AC.jpeg

Edited by madkaw
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That's an interesting one.

Will the Performance cat act like a resonator (do you hope that)? Do you have in mind to use 2 lambda sensors? I'm curious about the autcom. Could be also something for me.

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1 hour ago, SoCalJim said:

"performance cat" sure got my attention, madcaw!  What brand/part # are you using?  Thanks!

CARB approval would be your biggest challenge

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Please, make a post/comment when you get this squared away with a video of how it sounds - I'm a sucker for the twice pipes sound! Especially a custom job like this!

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13 hours ago, munters said:

That's an interesting one.

Will the Performance cat act like a resonator (do you hope that)? Do you have in mind to use 2 lambda sensors? I'm curious about the autcom. Could be also something for me.

Been running two Lamba’s . The cat is for smell, convenient packaging for two pipes .

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9 hours ago, Tweeds said:

Please, make a post/comment when you get this squared away with a video of how it sounds - I'm a sucker for the twice pipes sound! Especially a custom job like this!

 

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Well this is going to be a slower process then anticipated. My spool gun is giving me fits and has forced me to actually learn how to TIG . I guess no time like the present to teach an old dog a new trick . I have played around with TIG, but I’m a rookie for sure . With a bad back I couldn’t refill my CO2 tank and the Argon tank was about full, so.... 

Almost have the first legs of the exhaust  to the cat done ,which was going to be the hard part . I think I gained about an inch in ground clearance or maybe more . Got to get this right , because this will be the last time 

D8E68700-CFC7-401A-9120-3B597A3085A5.jpeg

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On 6/14/2021 at 6:29 AM, madkaw said:

Been running two Lamba’s . The cat is for smell

Gotcha. And if you're running a closed loop system that uses lamdas, you should be able to control the mix good enough that you don't light the cat on fire.

Good luck with the TIG. Run pure Argon. I wish I was better with mine, but I'm sure some of the faults are my own... I don't use a dedicated grinder for my electrodes (which is a no-no), and I don't have high-freq start, so I assume that my tips are contaminated before I really even get started. Sometimes it turns out good, and sometimes it doesn't. I'm no welder.  LOL

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It’s an interesting dynamic watching dual widebands with these plenums. Mixture varies with vacuum changes . 
 

I don’t use a dedicated grinder either . I might get serious and buy one just for that . Maybe a mini that sits on the welding table. I’ve got enough strokes against with skill level, so maybe clean consumables might help me . Burned a quarter inch hole already and was able to refill it - lol.

The tig is slower , but is better if I can get it done . 

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Well I ran out of argon which forced me to go back to my spool gun . Figured out it’s issue ( operator error ), but live and learn . It’s sooooooo much faster with MIG ! 
This is my initial attempt , but I might redo it . I was hoping for a bit more spacing between the pipes . I could have gained a bit more clearance by get the pipes side by side sooner . It will be a trick , but I have lots of mandrel bends to use .  The back half will be the easy part . 

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461C00E3-913C-4FD7-A8EB-7A01345B11D0.jpeg

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