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Discussion Starter #1 (Edited)
Greetings Everyone.

The top of the airbox does not include the Mercedes Emblems like you see on other OEM SL500 from similar years, never even have thought much of it when I purchased the car. I have then looked very closely and noticed that the height of the airbox is taller (more volume) than OEM versions in comparison. This came with the car when I purchased it. Anyone knows who maunufactures or retails this part, or has anyone on the forum ever seen anything similar?

Thanks in Advance.
 

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MB SL600, MB 380SE, Suzuki Grand Vitara, 38' Chris-Craft, Volvo V70XC, and my own two feet...
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Ya, someone most definitely put an aftermarket intake on your car.

It looks pretty nice too!
 

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Discussion Starter #3 (Edited)
Ya, someone most definitely put an aftermarket intake on your car.

It looks pretty nice too!
Thanks Chris, I like it too. Has anyone else seen one like this or know who makes these :confused: I would like to get some more opinions on this.

Thanks

__________________
KEN

1995 MERCEDES-BENZ SL500
 

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Discussion Starter #4 (Edited)
Hmm...

270 views, and no one has one of these, nor has seen one like this.
Here is a closer view "removed from engine" for closer examination.
It appears to be a custom fiberglass modification after examining the underside of it.
Dunno who made it, but it's mine now! :thumbsup:
 

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Discussion Starter #5 (Edited)
Here are a few more photos for viewing:
 

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1998 Pano SL500; 1993 SL500; 2005 ML270cdi
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Ken, it does look like a custom job to house bigger air filters. It's a pity they didn't put a sticker on to say who makes them or perhaps it was made by a very clever previous owner.

Whoever made it calculated down to the last millimetre, you can see the imprint of the hood-pad on the black fibreglass finish :bowdown:
 

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95 sl500, AMG - F/R Brakes, Exhaust, Wheels. RennTech - ECU, CF Airbox. H&R Sport Springs. K&N
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So if I remove my air filter box, and all the filters, I will have even more free ponies.
I dont this this will work. I had my air box off and the car basically started stalling and throwing a light on the spedo and then it stalled. Slapped them back on and she ran like a dream. I wonder thought how could a bigger box get more air in. Seems that it would allow more space for the air to just hang out before being let in to the engine. ????
 

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Discussion Starter #8 (Edited)
I dont this this will work. I had my air box off and the car basically started stalling and throwing a light on the spedo and then it stalled. Slapped them back on and she ran like a dream. I wonder thought how could a bigger box get more air in. Seems that it would allow more space for the air to just hang out before being let in to the engine. ????


I agree. I wouldnt run the car with the air-box removed for multiple reasons. But... A stock OEM intake/airbox is engineered to create a certain balance to airflow volume vs. velocity. OEM Facrtory components are enginnered to produce a certain velocity of air-flow But there is always a restrictive limit to the volume of air-flow bieng drawn in for higher-end RPMs. "Theory In General" A larger volume intake system should produce more horsepower durring upper RPMs, but too big of an intake system (may) reduce intake pressure which "may" hurt your lower-end torque.
 

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Bigger intake normally = more power. That's why everybody spends money on them. A lot of it has to do with how much constriction was there in the first place.

American muscle cars are better about giving you a decent-sized intake setup straight from the factory. Look at a mustang GT or a corvette airbox...they're huge, compared to what Mercedes gives you. The germans haven't caught on yet...and even the 55k's and 63's come with tiny intakes...and those are usually the first thing people scrap.

So I bet he's definitely picking up some power with that custom intake. From the pics, it looks like it nearly doubles the filter area. Also, running your car with the airbox completely removed is not the same thing as switching to a larger intake. There is supposed to be some negative pressure in the system, and the airflow is supposed to be a certain velocity. You confuse the engine management when you completely remove the intake, because then it's basically unlimited air quantity at zero pressure with zero velocity.
 

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If you took your intake and air filters off the, yes, your car would have more power. It is a restricition. (yes you shouldn't) The engine has vaccuum to suck the air into the air intake, so it isn't getting 'confused' because it is so free breathing. It would be getting confused if you removed the MAF.

And I'm sure Mercedes could figure out a larger intake would give more power. The smaller intakes create less intake noise, which mercedes customers generally value. If you want to add a bigger intake yourself you can at the expense of a little noise. The average butt rocker in a corvette probably thinks intake noise is cool. I'm not saying they are wrong.

A hood scoop ramming cold air in isn't going to really add ponies until you are really jamming (the 'ram' effect isn't going to surpass the vaccuum of the engine and add anything until you are in the triple digits). But it looks cool, and the air is cool so you will get more power, but not more than a standard CAI.

Not to step on toes but this thread seems to have a ton of wrong info in it. Hope that helps clear some up, or instigate debate : )
 

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If you took your intake and air filters off the, yes, your car would have more power. It is a restricition. (yes you shouldn't) The engine has vaccuum to suck the air into the air intake, so it isn't getting 'confused' because it is so free breathing. It would be getting confused if you removed the MAF.

And I'm sure Mercedes could figure out a larger intake would give more power. The smaller intakes create less intake noise, which mercedes customers generally value. If you want to add a bigger intake yourself you can at the expense of a little noise. The average butt rocker in a corvette probably thinks intake noise is cool. I'm not saying they are wrong.

A hood scoop ramming cold air in isn't going to really add ponies until you are really jamming (the 'ram' effect isn't going to surpass the vaccuum of the engine and add anything until you are in the triple digits). But it looks cool, and the air is cool so you will get more power, but not more than a standard CAI.

Not to step on toes but this thread seems to have a ton of wrong info in it. Hope that helps clear some up, or instigate debate : )
Eh. I dunno...there are two parts of the equation when it comes to moving large amounts of anything (including air), and the size of the pipe is only one of them.

To a large extent, it boils down to velocity as well. By completely removing the intake, yes you'd be effectively removing the restriction created by the intake, but you would also be losing the velocity created by the negative intake pressure, and this may very well actually reduce the total amount of clean air available to the engine...

Additionally, if your engine was just sucking in whatever air was sitting on top of it, your IAT's will be probably 50+ degrees hotter than what would be coming through the intake assemblies, which suck in cool in from in front of the car. This will also cause significant power loss.

Also, if Mercedes can so easily figure out that they should put in larger intakes, then why the heck haven't they done it? The airboxes in my car are maybe just a smidge bigger than the size of my clenched fist. They're tiny, compared to the displacement of the engine...
 

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The next 23 pages are reserved for a heated, articulated debate on air intake issues.

Only kidding everyone, but it would be an interesting topic to expand. We all crave more power from one source or another.

Alex and Mike achieved a gain by increasing the diameter of their intake supply so why not bigger air boxes and filters?

12pack mentions the increased noise levels associated with bigger diameters, surely this can be countered with better sound insulation?

Tried and tested formulae must apply to getting air into an engine in the most efficient way, so one would imagine the engineers would design optimum systems to suit engines of each particular marque?
 

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SUPERCHARGED Silver Arrow
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Redliner,

When your the first to discover a new performance moddification, you are usually the first to get critisized, doubted, and even bashed by the very people you are trying to enlighten.

Later you chuckle to yourself when you realize that your idea was copied and is now being marketed by a your critic's favorite tuner.

But hey.... what do we know right?

Airbox mod (posted today): *** 55 Kompressor Air Boxes on NA V8s *** - MBWorld.org Forums
Where it originated: http://www.benzworld.org/forums/2462094-post365.html
 

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Redliner,

When your the first to discover a new performance moddification, you are usually the first to get critisized, doubted, and even bashed by the very people you are trying to enlighten.

Later you chuckle to yourself when you realize that your idea was copied and is now being marketed by a your critic's favorite tuner.

But hey.... what do we know right?

Airbox mod (posted today): *** 55 Kompressor Air Boxes on NA V8s *** - MBWorld.org Forums
Where it originated: http://www.benzworld.org/forums/2462094-post365.html
OMG, you ain't kiddin...

They really did snatch your intake design, didn't they?
 

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Yup.
And then Vadim states that the air box mod was founded by evosport back in 2004. But he was courteous enough to give me props on the engine cover discovery.

Question: If what he says is true, why did they wait till 2008 to start marketing, if they discovered this back in 2004?
Answer: Cause its not true.

Mike was the first to discover that the mod worked when he replaced my old HPS system with it almost 2 years ago.
Shortly afterwords, he discovered that AMG's system is also better than the original Mercedes air boxes on a naturally aspirated motor, and was the first to report their gains on my supercharger thread.

This is also a good example of how air box size does not play a role in Performance gains.

If you compare both boxes, you will notice that the AMG system is significantly smaller than the original Mercedes air box system. Here are the two major differences in performance because of this:
-the air flow design was improved and
-the internal air temperatures (IAT's) dropped, thus consistant performance was accomplished. This is because there is LESS air sitting on top of the motor getting cooked prior to it entering the chamber for combustion.
 

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Yup.
And then Vadim states that the air box mod was founded by evosport back in 2004. But he was courteous enough to give me props on the engine cover discovery.

Question: If what he says is true, why did they wait till 2008 to start marketing, if they discovered this back in 2004?
Answer: Cause its not true.

Mike was the first to discover that the mod worked when he replaced my old HPS system with it almost 2 years ago.
Shortly afterwords, he discovered that AMG's system is also better than the original Mercedes air boxes on a naturally aspirated motor, and was the first to report their gains on my supercharger thread.

This is also a good example of how air box size does not play a role in Performance gains.

If you compare both boxes, you will notice that the AMG system is significantly smaller than the original Mercedes air box system. Here are the two major differences in performance because of this:
-the air flow design was improved and
-the internal air temperatures (IAT's) dropped, thus consistant performance was accomplished. This is because there is LESS air sitting on top of the motor getting cooked prior to it entering the chamber for combustion.
Ya, you're 100% right.

If they had known back in '04 that you could slap the newer AMG intake setup onto the older V8's, then they would have been selling that 4+ years ago. Their "Now Available!" posting on MBWorld was the first anyone had heard of it from them, and that was (conveniently) just a couple months after you guys had already done it on your cars and posted pics.

Pretty fishy. Especially considering you probably wouldn't care if they used your idea, as long they said "thanks" and gave you credit for it.
 

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95 SL500, K&N, NEOKEN Ported TB, Custom Intake, RENNtech Sport Exhaust, AMG I Monoblocks
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Discussion Starter #17 (Edited)
Redliner,

When your the first to discover a new performance moddification, you are usually the first to get critisized, doubted, and even bashed by the very people you are trying to enlighten.

Later you chuckle to yourself when you realize that your idea was copied and is now being marketed by a your critic's favorite tuner.

But hey.... what do we know right?

Airbox mod (posted today): *** 55 Kompressor Air Boxes on NA V8s *** - MBWorld.org Forums
Where it originated: http://www.benzworld.org/forums/2462094-post365.html
I know right. I just wish I had dyno results for my intake mod to put on the table for everyone but it would not mean anything since I dont have the OEM stock airbox for a before and after comparison. Different dynos may yield different results as well as differences in climate conditions (temperature, humidity, elevation, ect). Personally, I would rather line em up somewhere on to the roads and drag it out. :D

Hey, of course there are many SLs that are way faster than what I have, but versus a similar model stock R129, just the way that this motor runs with its slight modifications, I am confident that this car will PULL.
 

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I know right. I just wish I had dyno results for my intake mod to put on the table for everyone but it would not mean anything since I dont have the OEM stock airbox for a before and after comparison. Different dynos may yield different results as well as differences in climate conditions (temperature, humidity, elevation, ect). Personally, I would rather line em up somewhere on to the roads and drag it out. :D
You can just compare it to other M119s. It would be interesting to see a dyno of your car. If someone dropped enough dough to have a custom airbox like that made, then you can almost bet that they would also have had the ECU remapped, and probably some other goodies as well. You are probably making more power than a stock 500.

How does the car feel to other 500s you have driven? Do you notice any difference?
 

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Discussion Starter #19 (Edited)
You can just compare it to other M119s. It would be interesting to see a dyno of your car. If someone dropped enough dough to have a custom airbox like that made, then you can almost bet that they would also have had the ECU remapped, and probably some other goodies as well. You are probably making more power than a stock 500.

How does the car feel to other 500s you have driven? Do you notice any difference?
On my previous MB which was a 1992 Mercedes-Benz 500E, in which has SOLID power and and pure Torque. If I am not mistaken the early 90's 500E utilizes the same motor as the 1995 SL500. However he acceleration on my SL500 does seems to feel quite a bit more "hyper" or "free" vs. OEM stock 500s particularly in throttle response . IT IS NOTICEABLE that the engine breaths quite freely and definately runs exceptionally smooth at idle or through the revs compared to your average Mercedes 5.0 V8. PLUS produces a serious amd aggresive V8 tone under full throttle. Feels very SMOOTH and RPMs are eager to peg redline quick without much of effort. I love Mercedes-Benz. :thumbsup: "What I can feel" is that the 0-60 is acceptable, quater-mile is OK mabe low-mid 14s but on the freeway it is STRAIGHT KILLER.
 
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