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Kooks or Arh for gt350？？
- Thread starter g0258shelby
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NYC350
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I will go with the Kooks , i have ARH on my Raptor not impressed with the craftsmanship after few months got cracks on the flanges .
VUDUGT350
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I have some clips on my instagram page of the system (@vudu350) for you to listen to. No drone at all. I run mostly e85 so I like the smell, but I still have cats in place, I'll let you know when I get them off it it changes (which it should). I picked up 22rwhp from the ARH long sytem (already had lund tune, JLT CAI and e85 in place before). No changes needed after the addition of the system according to Lund.
TDC
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KOOKS!!
My god did you not hear Swedensky's video. If it sounds like that in a video I can't imagine how much better it sounds in person. :hail:
My god did you not hear Swedensky's video. If it sounds like that in a video I can't imagine how much better it sounds in person. :hail:
TORQUEJUNKY
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KGTG350
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Dude my car is freaking loud and I have cats lol. But high flow cats and kooks. Sometimes it's too loud. I like the sound of your ARH long tubes though. Sounds very clean and crisp. [MENTION=21336]VUDUGT350[/MENTION]
@OP
I believe whatever route you go you will be happy. Both are Very reputable companies. And I've heard good things from both.
I'm happy with the kooks lt and high flow cat decision I made. That's my input. Very very very loud by the way. Videos can't tell you that.
@OP
I believe whatever route you go you will be happy. Both are Very reputable companies. And I've heard good things from both.
I'm happy with the kooks lt and high flow cat decision I made. That's my input. Very very very loud by the way. Videos can't tell you that.
swedensky
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No. Catless. There are a few more videos on my YouTube also. One of daily driving with the valves open and one with them closed for comparison.
TORQUEJUNKY
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Thanks, you're car sounds amazing. I've had ARH with an O/R xpipe on my 2013 GT500. When it came time for the NYS inspection , I swapped out my O/R pipes for the hi flow cats that ARH offered and loaded my Lund tune for cats and I couldn't get the 2 ready lights to agree. I drove it for a few hundred miles with no success.
I want to go catless again but I'm worried that I'll run into the same problem. How do you plan on handling your CA inspection when the time comes?
Thanks,
Rob
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firestarter2
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That's good information thanks
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swedensky
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We don't have to smog for first five years of ownership, so I hadn't thought that far. The car is going back to Ford, and the header system will be for sale soon.
Dyno tuned, 525.6 rwhp SAE. Love the lope, had it on my 5.0 and daily it against Shaun's suggestions hahaha. I can now have muscle at idle and exotic at WOT
zombiekiller
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i have kooks. I had the green cats, a tow truck driver damaged them.
I replaced the midpipes with the standard catted ones.
Green cats still gave me a CEL. It would come up every 100 miles or so unless i used 100+ octane.
The standard cats are louder, probably because of less material.
The standard cats also let some gas smell manifest.
Net/net, I'm very happy with them.
I replaced the midpipes with the standard catted ones.
Green cats still gave me a CEL. It would come up every 100 miles or so unless i used 100+ octane.
The standard cats are louder, probably because of less material.
The standard cats also let some gas smell manifest.
Net/net, I'm very happy with them.
chops44
Well-Known Member
Well me and a buddy finally got around to installing my kooks headers with standard cats and man oh man what a difference in sound!! I have a hard time explaining it but it's "oh dam that's loud" and has a sharp bark to it when you blip the throttle. It's high pitched, still has the small burbles and pops but defiantly sounds more exotic. Not that I'll ever use but in normal mode, it has a whisp of smooth rasp and sounds very clean. All in all I am super stoked and couldn't be happier with the sound.....If you've been debating headers, do it!!
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Lexluther
Well-Known Member
Kooks if you want to go E85. Shaun at AED says the 02 sensors are closer to the collector where its hot and water which is a by-product of e85 combustion won't get on the hot ceramic tips of the o2 sensors and crack them. Shaun said he's had issue wit ARH burning up O2's since they are further back. You may want to call him for more detailed info.
ARH has a slip fit collector from header to mid pipe and Kooks has a ball flange connection. Everyone seems to have their preference on that same goes for the sound. Check out the kooks vid below with a kooks full exhaust no cats on a dyno (not my car)
Cali emission will be fine catless if your running E85. It doesn't burn clean but its burning chemicals which the emissions dyno isn't looking for. It smells like sweet alcohol so although its not good for you it doesn't offend the nose.
If you don't want a tune than race gas and fabspeed catted O2 spacers.
http://www.fabspeed.com/universal-o2-spacers-with-catalytic-converters/
I have a full header back Kooks catless system I may let go. My cars been in the shop 4months may have to do lemon law on it. Id list it 20% off and free shipping basically kooks cost after shipping fee's.
Not my car but ooh that sound kooks full exhaust no cats..
ARH has a slip fit collector from header to mid pipe and Kooks has a ball flange connection. Everyone seems to have their preference on that same goes for the sound. Check out the kooks vid below with a kooks full exhaust no cats on a dyno (not my car)
Cali emission will be fine catless if your running E85. It doesn't burn clean but its burning chemicals which the emissions dyno isn't looking for. It smells like sweet alcohol so although its not good for you it doesn't offend the nose.
If you don't want a tune than race gas and fabspeed catted O2 spacers.
http://www.fabspeed.com/universal-o2-spacers-with-catalytic-converters/
I have a full header back Kooks catless system I may let go. My cars been in the shop 4months may have to do lemon law on it. Id list it 20% off and free shipping basically kooks cost after shipping fee's.
Not my car but ooh that sound kooks full exhaust no cats..
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