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That Guy
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Discussion Starter #102
Idk, what is wrong with your phone, and what phone is this, this time?
It's a Samsung Infuse, same as the other crappy phone, but for some reason this one wants to insert everything I've already typed every time I make a correction. I edited my post, but Mason caught it in his quote.
 

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I believe my results are fairly typical but I figured I'd share them none the less.

I current have the 'snorkel' pulled off the airbox but nothing cut. I have also removed the resonator at the bottom of the box and left it open. I made both of these modifications prior to changing the air filter. I immediately noticed a slight decrease in mpg (34mpg to 32mpg) and I noticed the car seemed to hesitate/bog more off idle, between shifts and during moderate acceleration.

I finally got around to picking up the K&N drop in filter. Immediately, I haven't noticed any increase in power (by the butt dyno) and I have not put enough miles on it to comment on fuel economy.

I have however witnessed a very noticeable change in the driveability of the car. The bog off idle, between shifts and moderate acceleration is completely gone and the car is driving smooth as silk. I would say it's much smoother than the car was before I made any modification to the airbox.

IMO these changes alone make the $50 investment worth while.
 

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That Guy
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Discussion Starter #106
I believe my results are fairly typical but I figured I'd share them none the less.

I current have the 'snorkel' pulled off the airbox but nothing cut. I have also removed the resonator at the bottom of the box and left it open. I made both of these modifications prior to changing the air filter. I immediately noticed a slight decrease in mpg (34mpg to 32mpg) and I noticed the car seemed to hesitate/bog more off idle, between shifts and during moderate acceleration.

I finally got around to picking up the K&N drop in filter. Immediately, I haven't noticed any increase in power (by the butt dyno) and I have not put enough miles on it to comment on fuel economy.

I have however witnessed a very noticeable change in the driveability of the car. The bog off idle, between shifts and moderate acceleration is completely gone and the car is driving smooth as silk. I would say it's much smoother than the car was before I made any modification to the airbox.

IMO these changes alone make the $50 investment worth while.
I have to ask, but when you say the snorkel off the airbox, you aren't talking about the intake runners, are you? The two tubes that go from the airbox up to the radiator support (with the rubber strap that goes over the end) should remain in place. Those are the intake runners, and if they are removed then your engine would be consuming hot under-hood air. Hot air leads to bogging.

Just asking to make sure.
 

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I have to ask, but when you say the snorkel off the airbox, you aren't talking about the intake runners, are you? The two tubes that go from the airbox up to the radiator support (with the rubber strap that goes over the end) should remain in place. Those are the intake runners, and if they are removed then your engine would be consuming hot under-hood air. Hot air leads to bogging.

Just asking to make sure.
No I'm talking about the perforated tube behind the grille. The two tubes physically leading into the airbox are still intact.

Good lookin out though.
 

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That Guy
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Discussion Starter #108
No I'm talking about the perforated tube behind the grille. The two tubes physically leading into the airbox are still intact.

Good lookin out though.
No problem, just trying to help people get what they can without blowing all their income[thumb]

Did you leave the resonator hole open or did you block it off? While I'm sure that it would be negligible, I would block it off in order to keep engine heat out. If you have it open now, I would run it for about 3 tanks before doing it to see if there is a discernable difference.
 

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I did this the other day. I removed the snorkel and removed the black rectangle with the flaps attached. I also noticed the bog is pretty much gone in my 5/mt. I have the K&N drop in filter too. I'm very happy and this was really easy to do.
 

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No problem, just trying to help people get what they can without blowing all their income[thumb]

Did you leave the resonator hole open or did you block it off? While I'm sure that it would be negligible, I would block it off in order to keep engine heat out. If you have it open now, I would run it for about 3 tanks before doing it to see if there is a discernable difference.
It will be difficult to tell this time of year as winter is approaching; they are changing the fuel blends and we let our cars sit longer idling to warm up.
 

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Boob Whisperer
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It will be difficult to tell this time of year as winter is approaching; they are changing the fuel blends and we let our cars sit longer idling to warm up.
My mileage is already dropping this tank. I hate winter blend. It prolly costs the refineries less to make, but they won't sell it for less[?|]
 

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How did you guys remove this piece? I see the two clips. Did you compress them with plyers?

thanks




Sorry for stealing your image jdubhack I just wanted to clarify..
Is this the flap that gets cuts? Can't this top part just the remove apart from the bottom??

Anyone have a link to the newmission mod I want to see what everyone is talking about but can't find it using the search.
 

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Performance gains have only been shown on the dyno with the combination of the snorkel delete and the replacement filter. That is only hp/tq measurements, though, I cannot confirm or deny real world performance (mpg's, drive-ability) outside of the combination.

Edit: Actually, I can say that drive-ability is improved with the drop-in and no snorkel-delete. I can't confirm the snorkel delete with the OEM filter, though, as mine went circular file a few days after I purchased my Ti.
So I might be able to add to this...
I did the snorkel delete and full flap removal, left the OEM filter intact for 3 tanks of gas (2 87 and 1 91). Gas mileage remained within 2 mpg of my norm, which is 30 mpg almost all city (variability came from my foot being heavier one day than another... lol). Low down throttle response remains poor (expected), but above 3K rpm the car felt a little more responsive on 87 and 91 respectively. I pulled the flap entirely to leave it intact if I choose to return to stock, noted no temp change on the coolant (just gauge watching) and did not note the cooling fan running more than normal, which tells me it's making little to no difference in airflow to the radiator (as expected).
I have ordered the K&N drop in and will run a couple of tanks through that as comparison. I really just want to solve low end response more than anything, and it looks like the drop in will help with that.
I am considering the newmission mod or a variation of that mod as I'm not convinced I will see a "ram-air" effect at low speeds and might just route the additional air from somewhere else (definately noted the massively restricted flow in the stock setup). I see the benefit of the mod, just might go a differant way.
 

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That Guy
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Discussion Starter #114
So I might be able to add to this...
I did the snorkel delete and full flap removal, left the OEM filter intact for 3 tanks of gas (2 87 and 1 91). Gas mileage remained within 2 mpg of my norm, which is 30 mpg almost all city (variability came from my foot being heavier one day than another... lol). Low down throttle response remains poor (expected), but above 3K rpm the car felt a little more responsive on 87 and 91 respectively. I pulled the flap entirely to leave it intact if I choose to return to stock, noted no temp change on the coolant (just gauge watching) and did not note the cooling fan running more than normal, which tells me it's making little to no difference in airflow to the radiator (as expected).
I have ordered the K&N drop in and will run a couple of tanks through that as comparison. I really just want to solve low end response more than anything, and it looks like the drop in will help with that.
I am considering the newmission mod or a variation of that mod as I'm not convinced I will see a "ram-air" effect at low speeds and might just route the additional air from somewhere else (definately noted the massively restricted flow in the stock setup). I see the benefit of the mod, just might go a differant way.
You will definitely notice a better throttle response with the K&N. The initial lag will disappear and response will feel much more cleaner and linear. Some placebo, but driveability is greatly improved.

Before doing the Newmission or a variant, take into consideration your average trip. My car is a work commuter, and my commute is mainly in-town/rural. I saw an average loss of 3-4 mpg with the Newmission and my scoop. That being said, others that have mainly highway commuting report seeing good gains, and the one extended highway trip that I took also supported that.

For my driving and current setup, this intake setup has shown to be the best all around. I literally ordered a new airbox (entire box w/maf sensor and OEM filter for abt $120 through Steve at Tousley, and the only way you can get the lower half of the airbox) to de-Newmission completely. That being said, I am going to revisit the Newmission mod once I build my custom exhaust to retest on that setup[thumb]

Thanks for posting and I look forward to seeing your results[:)]
 

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Any theories about why the newmission mod would hurt performance in the city? Seems like more cool airflow would be a good thing but I hesitate to cut open my airbox when some are reporting no gains or worse.
 

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That Guy
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Discussion Starter #116
Any theories about why the newmission mod would hurt performance in the city? Seems like more cool airflow would be a good thing but I hesitate to cut open my airbox when some are reporting no gains or worse.
I wish I could say I knew, but unfortunately I don't. I only have two thoughts on it-

A. The direction of the forced airflow causing turbulence in/at the filter. By this I mean that, at low speeds, the air is causing turbulence directly in front of the MAF sensor, causing confusing inputs for fuel injection. I have contemplated building a shroud to divert the air around the filter as opposed to directly at it to see if this is it/helps, but haven't because BUSY/LAZY. I think that this is only causing the low speed issues because at some unknown (by me) speed there is enough air being forced into the intake to overcome the engines air intake requirement, in turn creating a mild boosted (in the box) condition in which the air is readily introduced past the MAF sensor smoothly. In my head, this explains the loss at lower speed and increase at higher speed.

B. It isn't uncommon for vehicles to see an mpg reduction after the installation of an aftermarket intake due to the car being programmed based on a stock intake. The additional fuel has difficulty exiting a stock exhaust, and all of the dynos on OEM exhaust have shown that the exhaust is very near max flow capacity straight from the factory. This is why the majority of mpg seekers go straight to the exhaust, as gains are almost always seen immediately on them, even with a stock intake.

This is really all I can think of based on my knowledge/experience base...[dunno]
 

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You will definitely notice a better throttle response with the K&N. The initial lag will disappear and response will feel much more cleaner and linear. Some placebo, but driveability is greatly improved.

Before doing the Newmission or a variant, take into consideration your average trip. My car is a work commuter, and my commute is mainly in-town/rural. I saw an average loss of 3-4 mpg with the Newmission and my scoop. That being said, others that have mainly highway commuting report seeing good gains, and the one extended highway trip that I took also supported that.

For my driving and current setup, this intake setup has shown to be the best all around. I literally ordered a new airbox (entire box w/maf sensor and OEM filter for abt $120 through Steve at Tousley, and the only way you can get the lower half of the airbox) to de-Newmission completely. That being said, I am going to revisit the Newmission mod once I build my custom exhaust to retest on that setup[thumb]

Thanks for posting and I look forward to seeing your results[:)]
I'm not super concerned about gas mileage, I'm coming from a heavily modified Mustang that got 17 mpg city and 21 highway... (CAI, new rear end, headers, racing tune, lowered..). Whatever the focus gets is gonna be better!! I do have a lot of plans, but going slow and researching a lot since this is my first 4 banger that I felt was worth modifying...
I almost bought an ST, but my SEL was just too good of a deal to pass up on!
 

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Ok, so here's a video I took. Just for the sound really. I'm accelerating down an on ramp to get on the interstate. I have a K&N air filter in the stock housing with the cover left off. I also did the snorkel delete. Took maybe 5-10 minutes with a flat head screwdriver. I was holding the camera just in front of the steering wheel and all of the windows were rolled up. Sounds pretty good to me. Once I get my tax returns for this year I think I'm going to get the FSWERKS stealth exhaust. Let me know what you think. Thanks.


http://www.youtube.com/watch?v=G4JP_IJCPE4&feature=plcp
 

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I have the kn drop in filter at last i ve the opportunity to check it out on dyno;putting the snorkel out definitively decrease hp ,FYI.
 
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