Regular K&N replacement filter - Ford Mustang Forum
 
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post #1 of 13 (permalink) Old 08-23-2006 Thread Starter
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Regular K&N replacement filter

I picked up a regular K&N replacement filter because I noticed a performance gain in previous cars. It feels a little better but it might just be my imagination. Talking to a co-worker he said he heard there was a restrictor installed by Ford that some people have been taking out. Is this true? Am I gaining anything by putting the filter in a stock 05 GT?

I don't want to go with the CAI yet because I have other future plans for it first.


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post #2 of 13 (permalink) Old 08-23-2006
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before I put my K&N CAI on, had originally just replaced the stock filter with a regular K&N filter, I too thought I notice a little difference. The responiveness of the trottle was minutely better and my gas mileage increased by 2 mpg. But I only had that set up for maybe a month then I upgraded to a CAI, exhaust and a tuner.

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post #3 of 13 (permalink) Old 08-23-2006
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Quote:
Originally Posted by Boglin
I picked up a regular K&N replacement filter because I noticed a performance gain in previous cars. It feels a little better but it might just be my imagination. Talking to a co-worker he said he heard there was a restrictor installed by Ford that some people have been taking out. Is this true? Am I gaining anything by putting the filter in a stock 05 GT?

I don't want to go with the CAI yet because I have other future plans for it first.
I read that in the 05s there is a filter just before the MAF sensor which many people remove. by 06 it had been eliminated.

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post #4 of 13 (permalink) Old 08-23-2006
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Squeeze the stock air tube where it comes out of the box. If it flexes you don't have the hydrocarbon trap - if it's solid, pull the tube off the box, grab the edge with needle nose pliers and work it past the little ridge. It's easy once you get it started.
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post #5 of 13 (permalink) Old 08-23-2006
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The HC trap was eliminated midway through the 05 model year. It's only there to recycle unburned gasoline vapors that remain in the intake on engine shutdown. If you have one, it's certainly safe to remove. It's actually quite restrictive. Some have said there's 10 hp in there, but that might be a stretch.

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post #6 of 13 (permalink) Old 08-23-2006 Thread Starter
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Quote:
Originally Posted by 2horseowner
Squeeze the stock air tube where it comes out of the box. If it flexes you don't have the hydrocarbon trap - if it's solid, pull the tube off the box, grab the edge with needle nose pliers and work it past the little ridge. It's easy once you get it started.
If it looks kind of like a honeycomb then I do have one. Thanks for the tip.

Errr, I should say I DID have one. Came out really easy. Thanks again.

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post #7 of 13 (permalink) Old 08-23-2006
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Quote:
Originally Posted by Boglin
If it looks kind of like a honeycomb then I do have one. Thanks for the tip.

Errr, I should say I DID have one. Came out really easy. Thanks again.
That's the one... Did it come out in one piece?

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post #8 of 13 (permalink) Old 08-23-2006 Thread Starter
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Quote:
Originally Posted by stlwagon
That's the one... Did it come out in one piece?
Yup, all in one piece. I was kind of careful so in case the dealer ever said something I could put it back. I assume they wouldn't notice since they stopped using them anyway.

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post #9 of 13 (permalink) Old 08-23-2006
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Quote:
Originally Posted by Boglin
Yup, all in one piece. I was kind of careful so in case the dealer ever said something I could put it back. I assume they wouldn't notice since they stopped using them anyway.
Not that you need to for just a K&N and HC trap delete, but have you looked into a custom tune? Even without a CAI, you could add 15-20 rwhp. Add a CAI and you could be looking at 25 or more.

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post #10 of 13 (permalink) Old 08-24-2006 Thread Starter
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I've been saving for either NOS or a supercharger. Thought I'd do all that then.

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Quote:
Originally Posted by Boglin
I've been saving for either NOS or a supercharger. Thought I'd do all that then.
Sounds like a good plan... Both nitrous and supercharging are good power adders but both have their risks, especially on the all-aluminum 4.6. 5-20 can weigh in on the benefits and risks of nitrous.

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post #12 of 13 (permalink) Old 08-24-2006 Thread Starter
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Yeah, NOS seems like a quick, cheap boost but I dunno. I'd much rather have a ProCharger. I think it would be worth the wait and the higher cost in the end. With the new muscle coming out in 07 & 08 it would be nice to have those extra horses.

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Can anyone tell me where the Fuel Filter is on the 05-GT? I've heard it's one of 2 places either in front of the fuel tank or between the bottom of the trunk and the fuel tank, meaning you have to drop the fuel tank to get too it. I've looked, and I don't see mine in front of the fuel tank, but can't believe Ford would be that stupid (or more money for them) by putting it between the trunk and the fuel tank. Any help would be appreciated.
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