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Hey guys, I would like to modify/customize the air box for your Mercedes. Im making them now for the C43. Is the air box you guys have the same as the C43?
If yes email me at geo3617(@)gmail.com if you're interested in buying one. You also have the option to send me your air box and save 80.00.
What I do is make the air box taller to breathe better. And I remove all the square baffles from inside the air box for smoother and less restrictive air flow.
After I do the work on the air box it will be like the Renntech air box minus the carbon fiber and minus the price that it sells for. The Renntech box goes for like $1500 plus your box.
I'm charging $525.00 shipped to your door.
Custom air boxes have shown 10HP and same with torque. I made one for myself and honestly loved it. So I decided to make more for those interested. I will upload some pictures later.
Here's how they come out minus the gloss. Gloss was just to show the quality of the air box....
Notice the oem how low the top plastic is in the front where the air flow sensor hooks up. After modification it's about 4 inches taller! The hood does close perfectly.
There is a purpose to the baffles to allow "even flow" across both sections of the intake - kindof intentional - and frankly the stock box has never been accused of being restrictive - although a good thing to replace both air filters frequently/like-5K miles
You might have some more interest in the AMG 210 forum. I'm sure curious.
Thanks. I been trying to see how I can go about finding at least one person to test out my air box. I'm interested in finding out if it will fit other cars. The difference from stock is height. So if the box don't fit I like them to tell me how much to lower. You say you're curious, can I ask about what? Is it if it will actually make power or...? Also, do you have a Mercedes that uses the c43 air box? If yes would you like to be a tester?
There is a purpose to the baffles to allow "even flow" across both sections of the intake - kindof intentional - and frankly the stock box has never been accused of being restrictive - although a good thing to replace both air filters frequently/like-5K miles
Can I ask where I can read that info? I been looking at other Mercedes air boxes and I found one from an older Mercedes where the square baffles are not there. Just strips of plastic going one way, not squares like the c43...
So now I leave the strips of plastic that go the same direction as the air flow.
I get rid of the small plastic ones which than takes away the square to leave the longer ones to direct air. Hope that makes sense.
Thanks. I been trying to see how I can go about finding at least one person to test out my air box. I'm interested in finding out if it will fit other cars. The difference from stock is height. So if the box don't fit I like them to tell me how much to lower. You say you're curious, can I ask about what? Is it if it will actually make power or...? Also, do you have a Mercedes that uses the c43 air box? If yes would you like to be a tester?
Well the RENNtech box had been proven to make more power across the board and your box seems to be following the same concept. Not to mention at 1/4th the cost. I would love to test the box on my 210 E55, just let me know how you want to set it up.
There is a purpose to the baffles to allow "even flow" across both sections of the intake - kindof intentional - and frankly the stock box has never been accused of being restrictive - although a good thing to replace both air filters frequently/like-5K miles
I installed filter minder on one of my W210 and after 80,000 miles it was still showing green, meaning no restriction. YMMV but 5k is overkill unless you drive dry dirty roads every day.
My 320 in W211 body has one of those big boxes, what I think gives less restriction than older box with single filter, but there is no way I can measure the difference if such exist.
In my teen years my hobby was flying models and one of the first engine modification was polishing the intakes, what did make noticeable difference from sand-cast aluminum passages.
But those were miniature engines that could pump close to 1 HP from cu cm.
Comparing to 3,000HP from 320 engie
Well the RENNtech box had been proven to make more power across the board and your box seems to be following the same concept. Not to mention at 1/4th the cost. I would love to test the box on my 210 E55, just let me know how you want to set it up.
Can you snap some pics from under your hood? I need close ups of the top,and the sides of the air box. And if you could reach to the MAF and firewall and snap a picture. Also if you could check how much clearance you have from the middle of the air box to the hood insulation. On the c43 it just barely clears but hood does close. I'm hoping your car has better clearance or same so I don't have to make the box smaller.
Can you snap some pics from under your hood? I need close ups of the top,and the sides of the air box. And if you could reach to the MAF and firewall and snap a picture. Also if you could check how much clearance you have from the middle of the air box to the hood insulation. On the c43 it just barely clears but hood does close. I'm hoping your car has better clearance or same so I don't have to make the box smaller.
I can do all this, though I do know the RENNtech box will fit (1999-2002 CLK430 and 2001-2002 CLK55 (W208) 1998-2002 E430 and E55 (W210) 1998-2000 C43 (W202) 1999-2006 S430 (W220)) both our cars so I imagine the clearances are similar. Shoot me your email address.
I can do all this, though I do know the RENNtech box will fit (1999-2002 CLK430 and 2001-2002 CLK55 (W208) 1998-2002 E430 and E55 (W210) 1998-2000 C43 (W202) 1999-2006 S430 (W220)) both our cars so I imagine the clearances are similar. Shoot me your email address.
You know there was a thread in the w208 section about air boxes. The used the 320 box the 430 box the 55 box and an e55 box too I believe. The used all new filters of the same brand and did dyno pulls with each one. The 320 single arm box had the best HP number out of all of them.
Hey guys OOgsAggie, was nice enough to post the cars that fit the renntech air box. So mine will also fit those cars and the ones you own. So if your interested send me an email at geo3617(@)gmail.com.
Thanks to SerbNerd as he came by today and allowed me to try my custom air box on his car. It will fit but you have to remove the cover below. Because it does touch the air box. Not much of a big deal for the gains you will get, but its up to you. The other option would be for you to send that part to me so I can modify it. Than i will send the air box and the modified cover and your set.
Soon there will be a user review, hopefully by next week.
Heres some pics that show how to remove that cover.
The plastic shroud we removed is used to "buffer" air from the slits on the hood to the cabin air intake/filter.
Not sure why Mercedes made it so large but imo it's not needed. Modification to this shroud can be done to not have it dip so low into the engine bay.
I'd like to test the box compare to the stock one on a dyno. Assuming it's similar flow wise to the renntech CF airbox, this would be a great upgrade while retaining the stock look when opening the hood! Personally I don't like the look of carbon fiber :p
Doesn't that shroud keep water off of the engine that comes through the vents?
It does yes. But cant have everything all the time you know. Wish i could have helped you guys keeping everything stock AND improve your performance. But either that cover comes off or gets modified in order for the performance gains. I will have the box i made for this model next week sometime. If any of you want it just let me know, but you have to take the cover off.
My concern is the ignition coils will get wet when it rains which can lead to misfiring and a reduction in performance.
I have to power wash my engine alot since im always getting it dirty with things i do. Never had a problem with direct water to the coils unless the spark plug wire insulators are cracked or loose i can see miss fires for sure. The coils will probably get a little rusty if water hits but with a little black spray paint on them beforehand , problem solved.
Not trying to debate with you. Just sharing a solution for performance gains.
I have come up with a solution to make your cars go fast and smooth. You guys just need to think how to go around these small obsticles. The power is so well worth it!
Let's see the dyno data that shows the Hp gains. Not that I doubt you, but engineers need hard data. Butt dyno's don't count.
I know butt dyno dont matter, even if its BUTTS that have dynoed the air box and have posted great results. im no engineer but i can see that the more air volume and less restrictive air box the better performace. For ME i would be concern if paying $525.00 would be worh the performance gain. Hard data can be found on the web with similar boxes gaining 10 hp/tq. Only difference is my price is WAY CHEAPER. Check the link below, great info on air volume and why manufacturers cant give us the power that most cars could put out.
I just wanted to share that I tried out the modified airbox on my E55 today. I didn't drive enough miles for the ECU to adapt, but I felt benefits nonetheless. Throttle response felt snappier and low end power felt stronger. The motor seemed to rev more freely. I have a loud exhaust note but I think I could hear a nice sounding induction noise in the mix.
I did have to remove the hood panel in order to close the hood for the test drive. In full disclosure I'm not willing to modify the panel to get the box to fit, so I sent the box back to speed43 today. I do think he is on to something with his modifications. I'm looking forward to dyno results. He is willing and capable of making modifications in order to make this work. So if you're interested, I would contact him to discuss your options.
86 190D (Exported to the Nerderlands), 87 300TD (Sold), 82 Ford F150 3spd, 99 E300D (RIP), 02 E55
Maybe if the rear of the airbox is a little rounded like the RennTech carbon box instead of squared out, the airflow might be better and not have it so high. You then don't have to take out the plastic piece on the top...Just a thought
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