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Kooks Headers Installed


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These headers are on my short list once I get the truck paid for. I would love the power increase and the sound increase as well.

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Which catted Y are you running? I notice they list two. One is really expensive. Also what gaskets did you use?

 

I am running the Race cat version, not the Green cat version. I would imagine the green is more restrictive and I figure running any cat is better than no cat on a daily driver.

 

Gaskets are stock.

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Mine came with an Offroad Y-pipe. That's why I'm gonna try it with stock exhaust first. We got lots of trees here in Oklahoma, I figure nobody will miss a couple.

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  • 4 months later...
  • 1 month later...

Here's a couple pics.

 

 

Nope, I would do it like this again.

Are you running straight boots on the plugs or 90 degree? Also, Taylor offers two different wire lengths as well, 9" & 12". I got the 12" wires since they say "truck" and the straight boots, they seem a little long. Also, I am wondering if the 90 degree boots would be better with the Kook's headers, as it looks like at least one of you use the 90 degree boots. Any help would be appreciated.

 

Thanks

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The Magnaflow sounds so good. It doesn't represent on the video, it is super quiet at low throttle positions but sounds healthy, almost big blockish when you roll in a little bit.

 

I can't say enough how happy I am with this set up. Kooks LT, catted Y, Magnaflow catback. It's not too loud in any way.

 

My fuel trims actually did not require changes to MAF or VE, except at WOT, I did adjust the MAF a bit.

Got any exhaust clips?? I have 1 7/8 ARHs with the ORY and cant makeup my mind on what i want for the rest of the exhaust!!

 

Sent from my Note 4 on Tapashit

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With less resistance in the wires themselves there is bound to be some HP gains to be had. On a previous model truck I had the gain was about 12 HP on the dyno on a stone stock motor. The factory wires have about 5K Ohms resistance. Aftermarket performance based wires are usually 500 Ohms or less. Personally, I also like the way it cleans up the look when you install headers. Zero radio interference by the way.

 

CORRECTION: Per the Granatelli Web site, the stock wires are about 2050 Ohms (shorter than the wires I used on my 2003) and their wires are zero ohm wires. On a dyno on a 2014 C7 Corvette, the difference was 12HP and 14 FP Torque. Just changing the wires!

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You guys running the Taylor wires is there any difference? And is there a reason you went with them?

The curve of the 135 degree boots better angels them away from the headers.

 

I doubt there is any performance gain. My truck us at 50K milrs anyway so its a maintenance thing anyway. Why not get bigger better wires??

 

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The curve of the 135 degree boots better angels them away from the headers.

 

I doubt there is any performance gain. My truck us at 50K milrs anyway so its a maintenance thing anyway. Why not get bigger better wires??

 

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I have seen performance gains with the lower impendence wires. Taylor has a line where the resistance is like 50 ohms. Those would show the biggest gain for Taylor wires. The wires I measured previously were Granatelli wires that have 1 ohm resistance. There was a solid 12HP gain on a 5.3L motor in a 2003 Silverado LT. This was also documented in one of the trucking magazines.

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I have seen performance gains with the lower impendence wires. Taylor has a line where the resistance is like 50 ohms. Those would show the biggest gain for Taylor wires. The wires I measured previously were Granatelli wires that have 1 ohm resistance. There was a solid 12HP gain on a 5.3L motor in a 2003 Silverado LT. This was also documented in one of the trucking magazines.

Idk.... I didnt feel anything when i put mine in. Haha

 

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10-12HP on a 360HP motor isn't going to feel like much. Since the wires we are using are 500 Ohm, it may only be a few ponies instead. Like I said my old wires were less than 1 ohm per foot. Still way better then 5000 ohms!

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!!!5000 Ohm's!!!!!!

 

RT

If you still have one of your old wires check it! The rating is usually per foot. I did test the Granatelli wires and got less than an ohm! Taylor advertises 500 ohm for the 10mm wires, but have another set with 50 ohms.

 

CORRECTION: Please see above. On a 2014 C-7 Corvette, the factory wires are about 2050 ohms and the Granatelli wires were at or near zero (+ or - a few tenths). On a 400+ HP motor it was worth 12 HP and 14 FP Torque!

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