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Old 08-14-2017, 11:59 PM   #1
Zzzato
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KOOKs axle back and secondary cat delete.

Anyone running this setup? I've heard the mbrp without the second cats and it is amazing but want something a little different. I can't even find a vid of someone with a KOOKs axle back on their 6th gen. Makes me wanna try it even more.
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Old 08-16-2017, 01:04 AM   #2
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I like the no response. Kinda gives me an original setup for if I go with it.
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Old 08-29-2017, 01:09 AM   #3
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I just bought it

But I have no cats at all and headers
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Old 08-29-2017, 10:35 AM   #4
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You like?
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Old 08-29-2017, 11:46 AM   #5
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Haven't got it yet... gonna be 3 weeks

I've always liked bullet style mufflers on everything else in the past so fingers crossed...
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Old 08-29-2017, 12:01 PM   #6
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Quote:
Originally Posted by ULTRAZLS1 View Post
Haven't got it yet... gonna be 3 weeks

I've always liked bullet style mufflers on everything else in the past so fingers crossed...
Is there any gains to be had from switching out the NPP?
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Old 08-29-2017, 12:18 PM   #7
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If it's anything it's very little maybe a couple measly hp. It's all about amplifying the sound of the v8
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Old 08-29-2017, 12:28 PM   #8
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Is there any gains to be had from switching out the NPP?
Probably not much

I hate the part throttle raspiness. It's as if the extra flow is getting caught in the suitcase and rattling around only way I can explain it. I also don't find myself using the different modes at all. Always liked bullet style mufflers in the past and I'm not selling my soul for an aftermarket NPP system prices are laughable

The valves also rattle at times now with my full open system. Headers and no cats
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Old 08-29-2017, 12:54 PM   #9
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pull the fuse and it stays open all the time
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Old 04-25-2018, 12:20 PM   #10
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Any comments on the KOOKS axle back? I agree, it does look very appealing!!!
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Old 04-25-2018, 02:31 PM   #11
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This is my car. It has Kooks catless full exhaust.
It has the oval mufflers. I want to change them for kooks 3" race muffler, I want it louder.
At full throttle it sounds great.
https://youtu.be/3FzrmlvFOec
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