I have gone with my lid on and i prefer it that way. I dont think you will notice any difference with the lid off, you'll just draw in more hot air.

 

If that's your reasoning for leaving the lid on, why did you think the open end filter would draw in more cool air? At least I think you're the one that made that comment in some other thread.

 

Thanks for the reply, I really didn't want to read the 89 pages in the snorkel delete thread. My son and I were thinking the same thing and with the way our car has responded we are very happy.

 

I think it will draw less hot air then with the lid off. I personaly left the lid on because i think it looks better. I feel like with the lid on it will draw more from the snorkel delete and the open end which would seem like more cold air then with the lid off. I honestly doubt it would make a noticable difference but i'd like to think it would make a small difference anyway.

 

IF you take the lid off YOu will hear huge roars now and then. The resonance in the system with the lid off is rather bad sounding, and can be very loud at times.
I suppose some ricers will like that. But anyone with any sense will throw the lid back on as fast as they can.
I have the snorkle delete and free flow air filter. Use 93 octane and am very happy with the performance of my 5 speed Focus.

 

How is the sound of the open-ended filter with the lid on vs. closed-end filter with the lid off (with snorkel delete)? Anyone know? For $hits and grins, I took my lid off and drove around for a few minutes...VERY LOUD and RICEY..just wondering if the open-ended filter gives a little more noise but isn't obnoxious.

 

I havent tired mine with lid off yet, maybe this weekend i will. But the open ended filter with the lid on definitley has a beefy sound. i would compare more to a Subie than a ricey sound. More of a low growl.

 

From the responses I have read the open ended filter is louder but in a nice way.
The plus is you can just plug the end up if you want it quieter again.
The Green filter comes with a plug for that open end.

 

Good! I can't get it done myself!

How do you pull out that plastic piece? I pull the pins out.... And that's it

 

Which plastic peace are you referring to? The snorkel? The shroud above the snorkel?

 

The shroud above the area the snorkle is hidden in is part of the front lower bumper thing. So all you can do is tilt it up some. easier if you undo the bolt on the driver side at the end of the plastic. top cover.
I took out both side bolts. Then lifted the top up with a phone book to hold it out of the way enough to reach under it.
You really do not want to break it! (like i wrote iti s part of the front. $$$$)
When you are finished it will fall back down as if nothing bad happened.
The screws on the end are Torx.

 

Question, noob in the house.

Would this hurt any warranty on a new car?

 

Only if it can be specifically, directly tied a failure. And only for that failure.

 

The horsepower difference between a lid on and off would be like .00017 of a horsepower.

 

Well, that is about .127 watts. So it is something.

 

I am honestly impressed that you took that number and multiplied it correctly. I was going to be an ass and correct you LOL.

Point is, no one would notice driving or riding in the car other than more induction noise.

But good call.

 

Having stood in a service bay and written many warranty tickets, I can say unequivocally that I have never, ever, ever seen a warranty claim denied over a drop in filter.

YMMV.

 

This seems logical to me. Mine is serviced 100% at the dealer currently and nobody has ever given me grief over the K&N sticker. It does say however in the owner's manual something to the effect that "Use of any air filter that doesn't meet their specs may void your warranty".

 

its under the shroud so they wouldnt see it or i doubt even notice even if they did look.

 

^^^Agree..nobody would ever know and I have no idea how this would have any bearing on the car's warranty or what it could harm. I am fairly anal about things and am not a heavy modifier but yanked it. I am actually going to replace it with the short velocity stack from the ST. This is also part of the reason I did it - the ST doesn't have it and has the same basic air box/intake configuration....if it was that important the ST would have it too.