Hey guys, I wanted to start a new thread so it will be easier for new people to get to know what i do.

I raise the stock air box which than the engine breathes better. And with more air volume inside the box the car gets more power.

My air box has been dynoed and puts out 10HP and 10Nm.
See links below from some that have purchased the air box and dyno results.

If your interested send me an email at geo3617(@)gmail.com.
Price is $495.00 shipped within the usa, $60-80.00 more for the rest of the world.



Stock air box height.



My air box height. Much taller than stock.

Thanks to Hayden for these pictures.



Stock Air Box.



Speed43 Air Box.






QUOTES:

Efifty5amg,

"Ok guys. Just received & installed this airbox. Off the bat, this box is huge compared to the stock one & I can feel the difference. The fit & finish is great & I wanted mine to look just like factory; George nailed it. I just recently moved & the elevation is around 5,000-5,500 ft so the car feels like a dog. Obviously it struggles for air at this altitude; this box makes a noticeable difference. In my opinion, the power seems to be more available throughout the entire rev band where it used to feel flat. These are my first days testing and are only my preliminary results/observations."

''Get one while you can guys! These airboxes are a steal; you'll be kicking yourself for not pulling the trigger while you still can. For you purists, the airbox looks completely factory when installed. You really can tell the difference versus the tiny restrictive stock airbox."

Drbc43amg,

''WOWWWWWW

The difference in size between the OE and modified air-box is ENORMOUS!!!!
George you certainly have done a super great job
I left the vehicle in second and floored the throttle WOWWWW accelerated about 300m before stamping down on the brakes as the end of the road was coming up faaaast. The acceleration is really great and the engine appears to be breathing so much better and feels smoother right up to the red line. George you have done a great job and I can recommend this air-box to any and all c43 owners I can imagine how this upgrade would work with a 55 conversion."

Ausmbtech,

Fitted my airbox and got it on the dyno. The new box added 7kw/10HP and approx 10Nm across the bulk of the rpm range. I'm not convinced the dyno tells the whole picture regarding the gains. The on road power gains/response gains at higher speed (100kph/60mph) are definitely noticeable and would indicate it's more than a 10Nm gain which makes sense as the air box does get a small positive pressure as the vehicle speed increases (which a dyno wont show).

I did also do a run with no airbox which gave a further 20kw/27Hp gain but whilst this looks good on a dyno there would be no further power increase as vehicle speeds increase.

I wont be doing a track day for a while but I'll take the old air box when I do get back to the track to test the gains above 200kph too."






Thanks to Ausmbtech for the dyno results.




Thanks to Ausmbtech for the dyno results.

 

A few additional pics. Love the box, fits perfectly, gains as much as the Renntech box whilst being completely stealthy under the bonnet.

 

Ill be ordering one in a few weeks! Great job Speed43!!

 

Good move.,

We for sure knows; how Geo. works hard to do a great mod. like that to gives better breath to the Engine lungs, isn't..

ZAYED,,

 

Oh yeah! You won't regret 99CEE

 

Ausmbtech, cm60k, efifty5amg, thanks to all of you for your support and kind words!
99ceefourthree, thank you, and check your pm.

 

Done.Just placed my order for one of theses special air boxes!.Speed43 is a great guy to deal with and his boxes speak for themselves given the good gains and craftsmanship as told by those who have purchased...support this guy,Super psyched as I will post gains and pics upon install.Thanks

 

You won't regret it...

 

great to see the results, and detailed pics of the size. this is now on my list of things to buy :-)
some maintenance and repairs popped up and also the C43 is in need of tires... but i would like the 10hp for sure.

 

Awesome, look forward to hearing from you.

 

Btw,anyone know if my air box will fit a mercedes clk55 amg? Do these cars have that plastic water shroud or whatever its called under the hood? I have someone trying to see if the box will fit his car. Thanks.

 

I would think it should be a straight fit. A lot of parts on the C208 (first gen clk) came from the w202 family.
George, what do you mean by the plastic water shroud?

 

Daniel,

see post (#16),,

https://mbworld.org/forums/e-class-w...d-air-box.html

ZAYED,,

 

Thanks Zayed I was just going to post that link. From what I've read you don't really need that part and the box will fit without it. But you know most people will not want to remove it but sadly that's the only way to gain the 10HP and torque and throttle response.

 

i can check my cars later tonight maybe, i have both C43 and CLK55 (208), the airbox is definitely the same on both, but i dont recall seeing that big hood shroud on mine that apparently is on the E55... i will double check and confirm.

 

I don't think "W208" has that shroud, only "W210" got it..!!

ZAYED,,

 

heres the underhood shot, no shroud on the hood but not a ton of clearance either.
speed43, how much higher is your box? i would have to find some way to make a cardboard test piece or something to see how much clearance is under there. doesn't look like much though. also, i may be mistaken, the CLK55 airbox may actually be slightly higher than the C43...

if your willing to meet me in south bend at the next autocross there we can try to put the box in and see if it fits

 

Dziner82, do the cardboard test from the RED DOT. Thats the highest point of the air box.
You will probably need to move down the wire harness near your firewall. Shouldn't be hard at all..

 

i should be able to check the clearance this weekend.

personally i wont be relocating the wiring harness. i like it right up there where i can easily see it and know its not near anything that will mess with it.
i will have to double check that area, the photo might be a bit deceptive about how much space is between the bottom of the wiring harness and the top of the airbox outlet.

 

Well in the w202, the bigger 4" version just doesn't fit without moving that harness. I believe the newer 3" George makes should be OK. I agree that if you can fit it in the CLK without touching the harness, all I can recommend is do it like that.

 

I think that wire harness might be ok where it's at. Since it's not like our c43 which for sure the plastic cover of the harness has to be removed. Worse case all he has to do is lower the harness a little bit. Let us know what height it has to be, I'm thinking 4 inch should fit.

 

Just placed the order for this custom Airbox for my C43 that I just recently did the 55 swap. Was able to source a '02 CLK55 and transplanted it in the 43. Right off the bat the difference is amazing. Car feels like a beast. I can only imagine what it will feel like with this Airbox. This upgrade is well worth it and dyno proven. Thanks for making such a product and making it accessible to enthusiasts like us. Will follow up the review once it's on the car.

 

hey guys,
i checked the clearances on my CLK55, im pretty sure it wont fit in there.

Speed43, from your red dot in the photo theres just over an inch of clearance under the hood. i dont know exactly how much but its not much more. about 2" forward (towards the nose of the car) there is only perhaps 0.75 inch clearance, its less clearance as it goes forward.

also, the picture is not deceptive in terms of the harness being in the way and just the firewall in general. theres only about an inch of clearance above where the engine air inlet meets the airbox. much less room than the C43! if you relocate the harness you only have about an inch of space there to go up.

if your airbox is a good 2-3 inches taller at the back and middle area it definitely wont fit in a CLK55 w208 without some modification to the hood.

 

It's a pleasure to make them, hopefully more people will soon see the benefit of the air box.

 

So basically the air box needs to be about 1 to 1 1/4 shorter at the back than what i do now. Thats not bad, the box will still make power and engine will run smoother. And with the inside square baffles removed the flow will be better. Also, that harness will not need to go UP but down some and on back of the maf.

If you get a chance and you could do one more thing?
Get that paper towel or toilet paper tube (you know once the paper runs all out) and cut it exactly 2 inches. Place it at the back of the air box by the air flow sensor. Than close the hood all the way, open and check if the hood crushed it.

If it dint thats perfect, if it did, than cut a 1 1/2 tube and see what happens. We have to find out exactly how much room i can go up at the back part of the housing. If the middle part where the dot is cleared 1 inch than chances are that the back will clear 2 inches. If renntech makes their air box for this car than they usually go up 1 inch up towards the back on all or most cars. And thats enough for 10HP.

So as long as i can go up at least 1 inch that car will breathe much better than stock. But if i can go higher even by 1/2 inch more than i would like to that for you guys.