Kooks 2015 Mustang GT Header and Full 3" Comp System

alexgg2

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Is this with 1 3/4 headers and catted x?

looks like 1 3/4" with cats to me. The 1 7/8" look much bigger. I have kooks 1 3/4" w/ cats on my 04 cobra terminator and the fit was perfect. Just FYI use as many stock studs instead of the supplied bolts as they will back out and start to leak. I used the supplied bolts and they backed out within a couple of weeks. After reading forums this was a common issue and using as many of the stock studs as possible would prevent bolts backing out and leaking. After I used as many stock studs as possible I never had a leak again. Im going to get this same setup for my 2015 gt and the roush supercharger once it becomes available for sale. I can't stand how slow these cars are compared to the terminator I need the supercharger asap, lol.
 

Boxstang40

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The more I hear videos with cats I like them more. Always had off-road before but these coyote engines seem to make better sound with the cats on(at least to me). Do they perform as well as off-road pipes?
 

alexgg2

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If you don't know what the cobra terminator is you shouldn't own a mustang as you don't know your mustangs. One of the best mustang ford ever built, its the older version of the gt500 which not that many people know about unless your a true mustang fan.
 

Chameleon76

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If you don't know what the cobra terminator is you shouldn't own a mustang as you don't know your mustangs. One of the best mustang ford ever built, its the older version of the gt500 which not that many people know about unless your a true mustang fan.

Know about one? I owned one noob. Please explain/prove how the Terminator is faster than the 2015 Mustang GT? We all await your answer. :nonono:
 
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alexgg2

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Know about one? I owned one noob. Please explain/prove how the Terminator is faster than the 2015 Mustang GT? We all await your answer. :nonono:


if you really owned one then you would really know the cobra with simple mods will have huge power gains compared to the 2015 GT. Simple mods like pulley and tuner(about $500) and your making around 465rwhp. Obviously you never owned one and only looking at specs ford posted on these vehicles which was way underrated and proven by stock dyno runs. cobra terminators make about the same rwhp as the new 2015 gt. The difference is ford really put a conservative tune on these vehicles and a very restrictive intake for the supercharger it had. Intake on the cobra will gain you 25-40hp depending on brand without a tune and about 5hp on 2015 gt with a custom tune and no gains without the tune. My cobra on stock pulley with Acuufab TB, K&N intake and Diablo Sport tune(Not A Custom Tune) stock exhaust made 417rwhp. With the kooks headers 1 3/4" primary's 2.5" collector, 2.5" kooks catted x-pipe, slp loudmouth and billet flow 2.76" pulley made 518rwhp with a custom tune from mike murrillo motorsports. So far I have installed Ford racing catback by Borla on my 2015 GT performance package, eibach lowering springs, Bama SCT custom 93 octane track tune, 91 octane sport tune. I didn't get the intake as american muscle saw only 5hp gains from the intake with a custom tune. Waste of money for the intake in my opinion especially since I plan to install a roush supercharger which reroutes intake. These are only simple mods but gained little hp on the gt compared to the cobras huge power gains with simple mods. For the most part if you have boost any mod you add will give you more hp gains compared to a vehicle thats N/A. This is why I said I need a supercharger asap as I am already used to a fast car and the GT seems really, really slow to me compared to my terminator. By the way I was referring to my cobra not stock cobra terminators in general. Pay attention when you read. I had already mentioned my cobra had Kooks LT's and anyone who has LT's on a terminator already did a pulley/intake/tune swap before they install headers. If you really had owned a terminator you would have known this.
 

alexgg2

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Here is my point dummy. Read your own post. Lmao

read the entire thing. I mentioned I had a terminator with kooks headers and the issues with kooks supplied bolts. then stated how slow the gt was compared to the terminator. The one I own... READ..... Reading the last sentence without reading the entire post and leaving the rest out doesn't make you right. You just omitted the entire part where I said i have a terminator with kooks headers. Obivously any smart person would realize I was referring my car and not all terminators in general with that statement. Key word terminator singular not terminator(s) plural.
 
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PIKE5.0

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That sounds pretty good what's the price on this system?

Pretty sure I saw 1300 no cats/polished tips, 1400 no cats/black tips.. Then a couple hundred more respectively for the "green" catted system.

I'm pretty certain I'm going to order this full header to tip system
 

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