Easy Cheap Intake Mod Simple Enough for Idiots - Page 7 - LotusTalk - The Lotus Cars Community
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post #121 of 210 (permalink) Old 03-27-2007, 01:21 PM
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Quote:
Originally Posted by bgsterling
because there's a great debate on another car list I belong to whether this does anything other than change the sound. Some argue, like yourself, that it increases airflow and thus gas flow.
It depends on the car. In many (most?) cases, opening up the air box won't make much of a difference if any.

As an example, the NA Miatas have a fairly restrictive intake track. Adding a K&N or another type of filter does absolutely nothing to improve power. As a matter of fact, you can remove the air filter completely, and it doesn't improve things. It has been dynoed and demonstrated. Adding a "free flow" filter (or opening the air box) can only help increase the power if that is the actual restriction in the intake tract. In many, many cases, it is not. I highly suspect that, besides the ECU correcting the A/F ratios, the air filter/box is not restricting the air flow into the engine.




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post #122 of 210 (permalink) Old 04-02-2007, 09:19 PM
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I did this mod to my S and there is a big difference! I'm glad I did it! It took me a while to do it because although I'm an engineer and hands on, this is my first time really working on a car. The majority of the time was spent to really get a good lock on the mouth of the airbox with the coupler. I cut the notch out as well as curved the bottom part of the coupler so it fit a lot better. I then cut a portion of the top of the funnel so it wouldn't touch the clam. I cannibalized the foam piece that was attached to the bottom of the snorkel and sat it between the funnel and the clam. It was a perfect fit!! Especially with the groove in the foam piece.

Drove the car and it sounds WAY better. The SC totally whines now, especially at WOT and above 4500 rpm when 2nd cam kicks in. It sounds DAMN GOOD!! It seemed a tad bit faster, but I can't really know for sure because I had a passenger ride with me. Can't be sure if it grunts a little more at lower RPMs, but I forgot to disable the flap. Maybe then there will be a little more grunt and even have the SC whine at lower RPMs. Still running with the stock filter for now.

THIS CAR IS DA SH*T!!!!!!!!!!!!!!!!

thanks to those who came up with this mod! On the S it is a must! It would be nice to ride in a NA car who's done this mod also.

** save ~10 lbs gain 1 hp ** EQ: Y=(190*X) / (1984-X) where Y is (HP) and X is (lbs)

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post #123 of 210 (permalink) Old 04-05-2007, 01:54 PM
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After driving the car to work yesterday, I've come to the conclusion that the car is faster according to my butt dyno. I don't know if the whining is making it feel that way, but damn it feels quicker.

How many horsepower does it take to feel a difference in a car's acceleration? 1hp? 5hp? For example, in audio, it's difficult to hear a difference in 1dB of volume, usually you can tell a difference of 3dB.

** save ~10 lbs gain 1 hp ** EQ: Y=(190*X) / (1984-X) where Y is (HP) and X is (lbs)

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post #124 of 210 (permalink) Old 04-11-2007, 08:54 PM
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Quote:
Originally Posted by Randy Chase

...

I still have the VSV module zip-tied to the upright support on the coolant overflow bottle. It is electrically connected, but has no vacuum lines going to it.

...

http://www.elisetalk.com/forums/showthread.php?t=12335




[R]emove both vacuum lines going to the VSV. You may find it easier to use a combination of gentle pulling and a flat bladed screwdriver to get the tubes to release.

5. In the above picture, you can see a "T" fitting on the vacuum lines. There is a small rubber plug on one port on the "T." The vacuum lines are either going to the airbox, or they were from the VSV. One line was going to the engine. Remove that line from the engine and using the rubber cap you just removed, cap off the engine vacuum port. The rest of the vacuum lines and fittings you removed will not be re-used.
i removed the snorkle, that's easy. but this other stuff: can somebody make this more explicit for those of us with less mechanical intuition?

for example:

- where is this "T"? can someone circle it?
- same for the rubber plug
- same for the VSV
- same for the line from the engine to be removed
- same for the engine vaccum port
- which "rest of the vacuum lines" should we remove?

i think part of the problem is that these copied steps are from an installation of an aftermarket intake, while what we are trying to do here is only disabling and removing the flap. so some of these here do not apply and it's hard to tell which ones.
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post #125 of 210 (permalink) Old 04-12-2007, 12:38 AM
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Quote:
Originally Posted by shay2nak
After driving the car to work yesterday, I've come to the conclusion that the car is faster according to my butt dyno. I don't know if the whining is making it feel that way, but damn it feels quicker.

How many horsepower does it take to feel a difference in a car's acceleration? 1hp? 5hp? For example, in audio, it's difficult to hear a difference in 1dB of volume, usually you can tell a difference of 3dB.
Gentlemen! I guess what I just find out will resolve all the pros and cons arguments. I was reading this thread from A to Z and decided, what the heck, will go down to the garage and do this mod right away. Well, it was a good thing I took a look at everything from the top before I take the wheel off. Guess what! THERE IS NO SNORKEL AT ALL on my 2006 Elise Sport! NONE! Just an open hole on the box where you guys attaching Velocity Funnel.
That's a factory setup, Gentlemen. I guess it answers all the questions.

Can anybody with Elise Sport confirm that? Do I just accidently miss that part?
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post #126 of 210 (permalink) Old 04-12-2007, 03:54 AM
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I removed mine from my exige the other day and cant hear any difference at all! (I have stage II exhaust so that may be why?)
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post #127 of 210 (permalink) Old 04-12-2007, 05:15 AM
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Quote:
Originally Posted by BOB1984
I removed mine from my exige the other day and cant hear any difference at all! (I have stage II exhaust so that may be why?)
+1. Huge difference on my Elise with stock exhaust. No difference at all on my Exige with Stage II.

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post #128 of 210 (permalink) Old 04-12-2007, 06:04 PM
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Quote:
Originally Posted by masheen
i removed the snorkle, that's easy. but this other stuff: can somebody make this more explicit for those of us with less mechanical intuition?

for example:

- where is this "T"? can someone circle it?
- same for the rubber plug
- same for the VSV
- same for the line from the engine to be removed
- same for the engine vaccum port
- which "rest of the vacuum lines" should we remove?

i think part of the problem is that these copied steps are from an installation of an aftermarket intake, while what we are trying to do here is only disabling and removing the flap. so some of these here do not apply and it's hard to tell which ones.
I agree.

I think you remove the two gray tubes at the Toyota part side and place them somewhere else to cap them.



Why did you guys pick the green filter over K&N filter??

** save ~10 lbs gain 1 hp ** EQ: Y=(190*X) / (1984-X) where Y is (HP) and X is (lbs)

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post #129 of 210 (permalink) Old 04-12-2007, 09:09 PM
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Quote:
Originally Posted by shay2nak
I agree.

I think you remove the two gray tubes at the Toyota part side and place them somewhere else to cap them.



Why did you guys pick the green filter over K&N filter??
Disabled FLAP, snorkel wasn't there on my Sport to begin with. No change in sound, of course but did I get a little more power by disabling FLAP or I am just imagining it?
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post #130 of 210 (permalink) Old 04-13-2007, 01:12 PM
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anyone have a picture of the airbox section or engine of the Sport Elise they can post?

** save ~10 lbs gain 1 hp ** EQ: Y=(190*X) / (1984-X) where Y is (HP) and X is (lbs)

'07 Lotus Exige S310


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post #131 of 210 (permalink) Old 04-13-2007, 01:19 PM
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Quote:
Originally Posted by shay2nak
anyone have a picture of the airbox section or engine of the Sport Elise they can post?
Airbox is the same with the rgilar Elise. But I sure din't find snorkel there.

Looks just like that. But you can check it from the top. Put your hand between the clam and airbox, left oft ECU, and you can fell if you have an open hole pr snorkel attached:
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post #132 of 210 (permalink) Old 04-30-2007, 04:39 PM
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I did this mod last night after spending a whopping $10 at Pepboys for the parts. (thanks Scotty for showing what to use!!!) Anyway... I drove the car today and HOLY $&!^ the car sounds awsome! I did not expect it to make much of a difference at all.. this simple intake mod combined with my Larini Cat and Exhaust makes for one awsome sound!!!! Wooo hooo.. okay... gotta go drive more.

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post #133 of 210 (permalink) Old 04-30-2007, 05:20 PM
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I love how it sounds now when it hits the second cam!!!

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post #134 of 210 (permalink) Old 05-01-2007, 09:29 AM
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i did this (removed the snorkel only) a week ago or so.

if it is possible to run into difficulty doing something on a car, i know i will find this difficulty. generally speaking, this is a simple task but i:

- stripped one of the plastic snap-in screws for the wheel liner and lost another
- the snap-in screw holding the snorkel at the top of the filter box seemed to be just rotating without acrually coming out, so i tried breaking off the snorkel from it, but that did not go so well - eventually i forcefully pulled the screw out from the top - it remained in a good enough shape to be resued instead of one of the now missing wheel liner screws.

this took me couple of hours.

that's probably the worse one can expect for this little job.
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post #135 of 210 (permalink) Old 05-01-2007, 03:39 PM
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As for the screw holding the top of the snorkel, just use a stubby phillips screwdiver, there is plenty of room to unscrew it. You have to feel for it since you cant see it. It came out in a bout 10 seconds.

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post #136 of 210 (permalink) Old 05-05-2007, 10:36 AM
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I had done this mod over a month ago and frankly was disappointed that I did not hear this fantastic sound that others had reported as the 2nd cam lobes kick in. Well today I heard it, and it was great, and the reason why it was there today and not previously was I had the soft top on the car. I am in Florida and have not had a top on the car until today because today it was so hot.
I also noticed was the stereo sounded a lot better which is a positive.
I had previously (with no top on) noticed at about 5000 rpm a sound that is best described as sounding like a weed whacker in the distance and put it down to some sort of resonance. Well, with the top on it is much more noticeable, anyone else have this?
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post #137 of 210 (permalink) Old 05-05-2007, 04:21 PM
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Quote:
Originally Posted by TheViper
I had previously (with no top on) noticed at about 5000 rpm a sound that is best described as sounding like a weed whacker in the distance and put it down to some sort of resonance. Well, with the top on it is much more noticeable, anyone else have this?
Yes, but mine starts at about 3500-4000 rpm. Kind of high pitched, slightly louder than faint then disappears somewhere around 8000 rpm (or maybe I just can't hear it due to the roar. No clue what that whacker noise actually is though.
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post #138 of 210 (permalink) Old 05-06-2007, 04:02 AM
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Originally Posted by RoadDad
Yes, but mine starts at about 3500-4000 rpm. Kind of high pitched, slightly louder than faint then disappears somewhere around 8000 rpm (or maybe I just can't hear it due to the roar. No clue what that whacker noise actually is though.
I got real scared when I first heard it.
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post #139 of 210 (permalink) Old 05-16-2007, 11:23 PM
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I just did this and dont like it. My custom intake was so much louder. It screamed get out of the way! Im going to have to play around with something else.

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post #140 of 210 (permalink) Old 09-08-2007, 02:37 PM
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Spectre part is 8771 for the plastic black?

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