K&N Filter

2005TorchRedGT said:

For anybody interested in the plain-ole drop in filter, K&N now has one available for our '05 Stangs:

http://www.knfilterchargers.com/search/product.aspx?Prod=33-2298

Price on K&N's site is $58. Can't find it listed on any of their online resellers' sites yet.

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I wonder if they have a dyno test to back up the increase in HP claim. I am sure there would be some, given the higher air flow, but I wonder what it would be. Nice little HP gain for 58 bucks? Kind like when that hunk of metal falls out of your intake hose.

what is this metal object you guys are talking about?

bandgod said:

what is this metal object you guys are talking about?

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That hunk o metal is the hydrocarbon trap Ford put into the air intake hose. It's a nasty bugger meant to catch unspent fuel coming back from the throttle body. Unhitch your air filter, loosen the ring clamp, pull the hose off and you will see what looks like a bee's honeycomb right there at the end of the hose. Using a pair of needle-nose pliars, carefully work the trap out by getting it over the lip of the hose. Pull one side, then pull the other, back and forth until she pops out. Running without this doesn't set off any sensors, so no problem there. In Alabama we don't have car testing for emissions, but I am keeping this in my garage in case I ever have to put it back for warrenty work on the engine. Dyno results of before and after show a 4-7 HP gain after removal. More air is allowed into the throttle body since the trap is quite restrictive.

Now, forget what you have just read. You don't know me. We never met.

I am sure given current emissions testing that the new GT will pass with flying colors even without this hunk of metal in the car. But keep it handy in case.

Good luck!

2005TorchRedGT said:

Yeah, I'm curious as well to know if there's some HP benefit (no word on K&N's site). One thing that concerns me, though, is that I've read of at least one person who dyno'd his without the filter and came up with a HP/TQ loss I'll reserve judgment till seeing another dyno run with the K&N in place. In any case, surely it has to be superior to the paper filter.

Btw, that hunk of metal fell out of my intake too. Happened last week. It was the darnest thing....

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IS that to say they put the K&N in place and came up with a HP/TQ loss?? Or was the dyno with no filter at all. That seems a little strange. I am like you. Need to see the dyno on this guy. I would think it would be a gain, but who knows. I'd rather replace my filter every 15K miles than lose HP. No brainer.

Does the 05 v6 have this same "carbon" collecter??

big ed said:

Does the 05 v6 have this same "carbon" collecter??

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Not for certain, but I would think that yes, it would. Ford is working emissions overall and V6 would be included. Have a look see. Pretty easy. Squeeze the intake hose right past the ring clamp (throttle body side) and if it feels solid, you've got one. It's a rubber hose, so it should compress.

I purchased a K&N replacement filter for my 05 GT.

Can anyone backup the claim that the K&N filter will hurt your performance (compared to stock).

The claim does not seem be valid.

Gloveperson said:

Only one way to find out..go to your local dyno. I gained a scant 2 RWHP on my LS1 over a dirty paper filter, I truly think these things do nothing.

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I had the same experience with my old Formula Firebird. I think just replacing the dirty paper filter with a clean one would account for the two horses.

And I've found that cleaning and reoiling those things is a pain in the @ss. Most guys I know who have one never seem to clean them, which kind of defeats the purpose. I went back to a Fram paper filter, ten bucks at Wal Mart, and didn't notice any difference in performance.