With K&N Screen in or out??

[Jim Vaccaro]

Stock Ait Box with just K&N Filter...

I hear both sides..Leave Screen or remove screen..??

[2k4mk1]

I left my screen in but removed the snorkel (silencer). :shft

[vetteeater17]

screen in but snorkel and air resonator out!

[Jim Vaccaro]

FLOW-Tech H pipe ??

Is that a catted h pipe?

[vetteeater17]

no

[tallymach1]

I have rough idle issues with my screen out. Did not really notice any difference in power or response with it out. I recently dyno'd with the snorkle, screen and resonator in place and will try to do so again soon without snorkle and res. to see what kind of results occur if any.

[vetteeater17]

that will be interesting to see

[2k4mk1]

Vetteater17,
Does removing the resonantor make any kind of noticable difference? I wondered what it's purpose was to begin with also?

[vetteeater17]

well on mach1registry i found many posts about it and what they said is that it was there because the automatics wouldnt meet EPA noise standards, but rather than only putting on the auto they put it on all of them, apparently it doesnt affect power one way or the other, but should increase sound. personally, i put k&n in, removed the snorkel and air resonator all at once, afterwards i did notice the throttle to be more responsive and had a better sound but i did it all at once so ya know....cant really attribute it to any one thing haha. the way i see it, the bottle was there to collect air right so just like anything else, you are trying to put more air through so eliminating this hideous milk jug will help

[BlackMachWon]

Still have never seen a before and after dyno of the screen or snorkel.

I removed both and noticed an intoxicating increase of intake noise at WOT and a tad better throttle response. Probably no power increase though.

If you look at the screen though you'll see how it could be anything but a measurable restriction. I have pics at home if anyone wants to have a look I'll post tomorrow.

Scott

[sudzz7]

I took my air resinator off today and my car would hardley run.
So i put it back on and now it runs fine.

[Jim Vaccaro]

Originally posted by sudzz7
I took my air resinator off today and my car would hardley run.
So i put it back on and now it runs fine.

Did you use a Plug for the hole???

[vetteeater17]

ya i guess i shoulda pointed that out, u do need to plug the hole created by removing the air resonator, there is a plug in the picture if you look

[MACH!AT61]

hi guys, will the k&n filter from an 01gt fit the mach1?:confused:

[03DSGMach1]

yes it will.

Noe

[IMachU]

I removed the screen and the anteater type snorkel, and noticed only a smoother throttle response. After a few days, I also noticed the idle going fron 300-1200 rpm, up and down. I replaced the screen and anteater, and idle issues resolved. This was WITH the K&N, no other mods at all. Left the filter in, btw.

[MachT.]

I also did it all at once..took the jug off and pluged it removed the snorkle and put a K&N.. I notice the sound to get loud at 3 000 rpms in 2-3-4 i love it,,
what scren are you talkin about?

[Yellowshaker]

I tryed running the car with the screen out and the stock h pipe and Magnaflow catback. Car ran 13.26 @106.5. Next time out I had a catted H pipe installed and found the car to be running extremely rich. My times were terrible that time out. Best of 13.45 @104.6. I re-installed the screen and the problem was solved. Not exacty sure why it richened up so much when i installed the H pipe though.

[Bill H]

I've removed the MAF screen twice........and twice I've gone back and put it in a few days later. On the other board I've posted several longer posts about this and my "opinion" as to the whys and hows of it. It does appear that the screen would be a restriction but without a Dyno tune, I feel it may be too much air for the stock MAF. I've disconnected the battery and did all the stuff you're supposed to do to let the system relearn the new parameters but even that didn't matter. The second time was after I added the new K&N CAI and it doesn't have anyplace to keep the MAF screen but I taped it in to keep it in place until I could reassemble the system and snug it down in place. With a good dyno tune you could probably adjust the air/fuel ratios and timing to gain more power but until then I'll keep the screen in place.

:shft

[Jim Vaccaro]

My 04 Auto ran a new best with Screen out...I guess it depends on the tune...

[Bill H]

Originally posted by Jim Vaccaro
My 04 Auto ran a new best with Screen out...I guess it depends on the tune...

Jim, didn't you get a "dyno" also on yours? Like I said, I think there could be some significant gains made if you can adjust all the parameters like air/fuel ratios/timing and such on a dyno while the screen is removed. However, until that time, mine runs better with it installed. If I get it dyno-tuned or one of those hand held programmers, I'll remove the screen again and try. :)

:shft

[spa302]

I left my air silencer in when I put the K&N in the '03 Mach from the old '02 GT. With temp. changes here in Ohio-land, better off with it in so it kept the hot air from the engine away. Better performance and ran better than the bf's Cobra. HAHAHA!

[Jim Vaccaro]

Originally posted by Bill H
Jim, didn't you get a "dyno" also on yours? Like I said, I think there could be some significant gains made if you can adjust all the parameters like air/fuel ratios/timing and such on a dyno while the screen is removed. However, until that time, mine runs better with it installed. If I get it dyno-tuned or one of those hand held programmers, I'll remove the screen again and try. :)

:shft
My car has Stock tune now.I will try a tune soon..

[Mustanganatic]

Bill H,
That pic you posted, is that your car? I saw some pics of a preproduction filtercharger from racernick over on the Registry and the fit didn't look that great on the bottom/left as your pic shows. I've seen other pics of the filtercharger after K&N released them for sale and the airbox appeared to have a better fit in that area. I've also seen a thread from CW (can't remember if it was here or on the Registry) where he was very displeased with the fit of the airbox and that it was completely open on the bottom letting air in from the engine bay.

[Bill H]

Mike,
Yes that’s as installed on my Mach 1. As far as fit, I think it all fit together pretty good and the instructions were very detailed. As far as the lower corner not being closed off, I could probably close off the gap a little better by doing some re-adjusting of the entire thing. It’s not a “pressurized” box and the only time hot underhood air would get to it would be while you were at a standstill. Since it’s open in the front, you should pull cooler air in from around (or through if removed) the headlight opening.

As I stated, I went back and put the MAF screen back in place and am satisfied with the look, fit, and performance. I haven’t dyno’ed it yet or tested it at a track but it’s probably in the neighbor of 10’ish hp or so. It does feel like some HP was added and it seems to pull better in higher rpms. So much so that I’ve actually hit the fuel cutoff at 7050 rpms in first and second a couple of times because it continues to pull, whereas before it would slack off and there was no reason to continue to wind it out.

I mention the MAF screen above again because another member of our club with an identical ’03 Mach 1 to mine added the PHP airbox and removed the screen since there was no place to put it and has dyno’ed 8 to 10 hp lower. With that screen removed, mine just didn’t feel quite as strong but does with it installed and I considered this.

Mine dyno’ed bone stock at 275.4 hp with no mods. Towards the end of the month, my Mustang club is having another Dyno Day and I’ll try and get more numbers then.

[Mustanganatic]

Thanks alot Bill.

[Jim Vaccaro]

Originally posted by Bill H
Jim, didn't you get a "dyno" also on yours? Like I said, I think there could be some significant gains made if you can adjust all the parameters like air/fuel ratios/timing and such on a dyno while the screen is removed. However, until that time, mine runs better with it installed. If I get it dyno-tuned or one of those hand held programmers, I'll remove the screen again and try. :)

:shft

I have stock tune in my car..I had a Reflash,but went back to stock because i made changes(Catted X and Pullies) before those mods with reflash i was 264sae....290twe now i wanted track time and will try a tune and re visit the track..