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Discussion Starter #1 (Edited by Moderator)
Title sez it all; Spent the last two days doing it the old-fashion way. I will touch on the things others could use.




1) The exhaust manifold heat shields are a little tough. In both cases (left/right), if you can remove the O2 sensors this will help significantly. Remove the heat shields which protect the engine mounts before fighting with the main manifold heat shields
2) Note that there is a left and right O2 sensor lead extension for the rears, they are keyed differently.



4) Watch the clearance on the rear O2 sensors, with the Kooks system you can rotate the CAT pipes such that they can be positioned away from the body underside. Make sure to center the pipes to ensure adequate left/right clearance as well, there is little room here for error. The amount of compliance in the engine and trannie mounts will allow alot of side play during spirited driving, which pushes the tops of the O2 sensors close to the body! if you stick a 13/16" long socket on top of the cross brace, between it and the crossover pipe, once you have everything tightened down and remove it...that crossover pipe will rest ~1/5" above(!) the top of the brace. Plenty of room to bounce without hitting the brace. Some people remove that brace permanently, this is not a wise idea given the significant role it performs during a significant impact.

This shot is looking across to the left/rear sensor:


This shot is looking straight up at the right unit, What you see is the felt insulation, and slightly to the right is the belly pan/driveshaft tunnel. Not a lot of room.


This shows the heat shield protecting the brake lines that head to the rear along the right hand side. Note the coupler rings have been offset (rotated slightly) to avoid contact. It's tight here as well:


Finally, the Magnum was raised only this high:


Sliding both headers in and out was a breeze, I did it a lot to fine-tuning for fitment. In fact I mounted both the header and the Hi-flow CAT's simultaneously so as not to have to shift/drop the rest of the exhaust system. Worked like a charm.
I did not have to remove the starter, nor the fusebox assembly up under the hood with these Kooks headers. It is imperative to disconnect the negative lead from the battery, as a quick check with a DVM revealed 12V on that big bolt sitting on top of the starter housing...just waiting for an errant wrench/heat shield/header/etc.

Finally I used the supplied hardware. I thought about all the times I have installed headers and the number of times any bolts "actually" came loose. Near as I can figure that twelve sets...maybe once. I did reuse the OEM stainless steel gaskets upon the advice of Kooks. They admit the gaskets they supply are, well, satisfactory as coasters.

The exhaust note has changed significantly. It has gone even higher in frequency, and is now downright aggressive under load. My neighbor was keeping an eye on me just in case Maggie decided to try and compress my arse while working underneath her, he came out after I came back from a spin to say it now sounds like a Rousch Stage 3 Mustang. "Vicious and Crackly" were words he employed. This sound clip sucks, I'll get another "going away" clip (like in my sig) when I get a moment:

http://i193.photobucket.com/albums/z142/Moebius44/CorsaKooks.jpg
 

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the toughest thing to me would be getting the front tires on the ramps backwards???

that looks awesome though, good work. I would love to hear it
 

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Very nice... 5 Stars and a bean for a great photo journey of your work !!!
 

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They call me Destroyer
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id imagine they were put under after jackin it up...
 

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Discussion Starter #5
Ya..that would be tough backing onto the ramps, my bad; I drove up onto the ramps initially, then jacked each rear corner up to place the rear jackstands. I then used a floor jack on the center beam under the engine to lift up the front end and place it on jackstands. I went higher than the ramps, this allowed me to turn them out of the way and serve duty as back-up in case something failed. One can never be too safe...
 

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They call me Destroyer
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sweet I win!


did ur stock o2 sensors survive or did u replace em?
 

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Remember Hookers Love Cupcakes
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Sweet pics and everything! beans to you... And it is true, you never can be to safe when jacking your car up like that.
 

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Discussion Starter #8
Yes, O2 sensors are serviceable and were re-installed...there should be no problem if you treat them properly.

Oh ya (DUH), here is the clip I mentioned previously:

[ame=http://s193.photobucket.com/albums/z142/Moebius44/?action=view&current=KooksCorsa2.flv]
[/ame]
 

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Being kept down by the man
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Sounds mean. Can't wait to hear the drive off clip. That should be a good way to compare the difference.
 

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daaaaaaaaaaaaaaaaaaaaaam i want these?>! is the juice worth the squeeze bro? looks alone got me sprung but hows the pavement pounding going?
 

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Discussion Starter #11
Here is a goal and return with CORSA only:

[ame="http://s193.photobucket.com/albums/z142/Moebius44/?action=view&current=Hemissary-CorsaAccelReturn.flv"]http://s193.photobucket.com/albums/z142/Moebius44/?action=view&current=Hemissary-CorsaAccelReturn.flv[/ame]

Goal and return Kooks and Corsa:
[ame="http://s193.photobucket.com/albums/z142/Moebius44/?action=view&current=KooksCorsa2-1.flv"]http://s193.photobucket.com/albums/z142/Moebius44/?action=view&current=KooksCorsa2-1.flv[/ame]

And one from the cockpit:
[ame="http://s193.photobucket.com/albums/z142/Moebius44/?action=view&current=KooksCorsa3.flv"]http://s193.photobucket.com/albums/z142/Moebius44/?action=view&current=KooksCorsa3.flv[/ame]

it's a shame my pocket camera does not record the high notes very well...

Fast UPS Man; it feels stronger, but hard to tell. Short and longterms need to settle in I think before I can really say...
 

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Discussion Starter #13
Last one, underground at the Home Depot:

[ame=http://s193.photobucket.com/albums/z142/Moebius44/?action=view&current=CIMG1409.flv]
[/ame]
 

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Excellent write up. I would like to do this mod. When and if I do I will surely refer to this post. Thanks!
 

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Great clips !! Man your car sure sounds like it shifts crisper than mine. On the second clip it damn near sounds like a manual transmission....... almost.

Hate the way mine shifts.
 

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Discussion Starter #17 (Edited)
Even with the limitations of the recording equipment I used (credit card digital camera) for this video, it "sorta" tells the story on just how loud the combination of Corsa and Kooks really is...at least on my vehicle:

[ame="http://s193.photobucket.com/albums/z142/Moebius44/?action=view&current=Underground.flv"]
[/ame]

I had no idea after putting headers/hi-flow CAT's it would be that loud. Seriously...it's really too loud now @ WOT, I did not expect this based on what I have read here on the forums.

By too loud I mean dB-wise, the actual exhaust note at ALL throttle positons is beautiful. The general consensus was/is that the Corsa exhaust has a much more refined exhaust note than any other offerings, but not loud-loud!

With a set of LT's/hi-flows...it is deafening when negotiating an underpass at 5000 plus...
 

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Have you had any CEL issues with the high flow cats and do you still find too loud ? I'm shopping for a full exhaust system but don't want it much louder than stock.

Thanks
 

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Discussion Starter #19
One code this summer shortly after install, none since. In my case I have an 05' RT, and have not employed any O2 spacers.

Here is what I ended up doing the other day, hope it helps:

Modifying the SRT8 OEM Exhaust System - LX Forums Modern Mopar Muscle

Although the Corsa 's sound quality and frequency are "very" pleasing, I am just as happy with what I am hearing (very different) now with the OEM SRT8 system. It is just not as loud at WOT.

Have you had any CEL issues with the high flow cats and do you still find too loud ? I'm shopping for a full exhaust system but don't want it much louder than stock.

Thanks
 

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That's funny, just did this exact setup on a buddies SRT. We didn't even bother with the rear 02's, turned them off with the Diablo.
 
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