session

think altruistically :p

eason

Was search for some K&N cone filters and will buy one tomorrow; since the inlet in the C230K is ovel and the room is tight, was having a hard time to find the right size. Just wonder will the sound change if I install a cone filter? Will I hear a air sucking sound like the turbo cars?

Buellwinkle

Although the inlet is oval by the grill, there's a adapter in the grill with a round opening.

eason

I think you misunderstand me. The inlet I am talking about it the one where you connect the upper part of the air box. I am thinking putting the cone filter at there.

christian655321

guess we will not know for sure until someone dynos again with just the filter. maybe we can modify it to work better if it turns out not to be a hp increase.

i still have not recieved mine, but since im in md maybe it takes longer.

young

well, if one person's dyno shows a gain, are you going to install the filter?

i ask b/c ben at evosport has said that they have gotten a LOSS in hp after installing the itg filter in a C32 and a sportcoupe.

mach430 said, "It would be interesting to see whether those are the same filters that we dyno tested, or if they have sine been re-cut to free more airflow. On our previous test of the filters, on both a c230k and c32 (different filters), we lost power."

my only question is whether or not the ones that we have (renntech specs) is the same as the one that evosport tested.

mach430 said, "For the coupe, a K&N filter may currently provide better gains than the ITG filter. That is why the ITG filters were being redesigned for the Mercedes Benz. We have been working with ITG for several months in this process. Whether Buellwinkle has a new filter, or the same model we tested, we will not know until he dyno's his car."

also, ben refers to a k&N filter, but afaik, there is no specific K&N filter available for the coupe. and i remember an article posted that showed K&N filters were basically useless or of inconsequential gain (also implying that any filter is useless including the itg).

(any typos are ben's! )

christian655321

vadim@evosport said
Yes, we have tested ITG filters on C32, E320, and C-coupe. In all cases they lost power. As much as 14HP on C32. Part of that loss is due to the design of C32 airboxes - air comes through the side of the air filter. Stock paper element can breathe through the side, ITG cannot - thus air restriction and HP loss.

On C-coupe it was 5 HP loss vs. stock. Taking filter out completely, yields additional 4 HP over stock.





well i remember someone cllaiming that the restriction is only in the c32 and the c230k did not have this.

we need to get a picture posted of what evosport used, and a picture of one from the last shipment. to see if they are indeed the same filter, a dyno with one from the new batch would also put a nail in this.

BlackC230Coupe

aw come on just do it for all of us.

i would have my car dynoed but there is not a dyno at all near where i live.

eason

Just installed the K&N cone filter; the result is not good. I think it is sucking all the hot air and the cone filter is quite small. I have already ordered the larger filter, hope it will be a bit better.

eason

Here is another pic with cold air hose attached, but I don't think it is working.

eason

Another view at the air hose.

christian655321

maybe you should make some kind of attachment for the white hose thing that actually attaches to the intakes going to the grill? that way more cold air would be directed to the filter. plus white is ugly, should be black. is that a dryer vent hose?

plus the hose is taped around the top of the filter which i thought does not suck in air, isnt the top covered by plastic?

i would probably extend where the filter is attached with a custom polished aluminum pipe to the intake on the drivers side then make something that directs the air comming from the intake on the drivers to the filter.

just my thoughts. im not an expert or anything...

preyx

Whatever happened to the guy who was working on the full-on CAI pipe? He mentioned he had a prototype going but he never said anything since...

C230 Sport Coup

So far I've gathered, that the stock air filter setup is best.
Seem MBZ had the right idea putting a scoop right out to the front. I thought that was good engineering when I saw it...
something tuners have done for years...get the air intake to bring in air from outside the engine compartment.
So why are you guys bothering with these inferior products?

eason

No doubt, the white hose is ugly and can't withstand with the heat in the bay, plus the cone filter is too small. I did change to another K&N cone filter (#RU-1480) and a new 4" foil hose. The driving feeling is better than the last setup, and I think the last setup is worst than stock. Now the car is better response in higher rev, but that's just the feeling I guess. I opened the hood and touch the filter after a test drive, and the filter is cold compare to the OEM box. I did several G-Tech runs with the stock and my new set up.
Stock air box:
0-60mph: 7.5s, 7.58s, 7.54s
Horsepower test according to the G-Tech: appox 195hp

K&N filter with air hose:
0-60mph: 7.13, 7.28s, 7.22s
1/4mile: 15.7sec @91.8mph

Horsepower test according to the G-Tech: appox 198.9hp

The test were done on the same road and each test was about 5 min apart.

Accroding to the numbers, I did have a gain in the 0-60mph and the horsepower. I will try to run it for a few days to see if there's anything wrong with this new setup.

eason

Here is another view at the new setup.

BlackC230Coupe

whats was your 1/4 stock? with the g tech.

eason

1/4 mile stock with G-Tech was 15.9sec@89.5mph

Buellwinkle

Eason, there's an area on the left side under the headlights that's fairly large and can hold a good size filter and you can make a hole in the plastic for fresh air. The problem is how to route piping down there to put in a filter. The problem of where you have the filter now is that it's directly behind the radiator fan. It may block airflow and overheat the car.

eason

The air hose is sitting above the cooling fan, I doing think it will overheat the car, since the stock air box is at the same place. I think heat is a big problem under the hood, the engine bay is so crowed and hot air can't escape. We need to design something that can direct cold air from outside the engine compartment to the filter for the best result. Also, I don't want to do any drilling or modify the OEM parts, because they are very expensive to replace. Unlike japanese car, you can almost tear up everything and replace it for cheap. MB engineers did a great job in aero dynamic, that's why we can't find any holes to get fresh air.

Buellwinkle

You can punch out the knock out for the air inlet on the left side to match the opening on the right. You may even be able to order the oval to round adapter for the right side and it should work on the left. You would get twice the amount of fresh air that way.

eason

which C class model use the air inlet on the left side? Will the ovel to round adapter on the right side fit the left side? I will give it a try later. Thanks I think the gain will be much more with the pulley, since the supercharge needs more air.

hobie

still no word from ITGs email contact listed in the instructions. filter still in garage. It might fit my furnace.

Buellwinkle

The 2003 C-Coupe uses the left side.

hobie

comment/question
If your using two inlets to the box , symmetry should be considered. A higher pressure on one side of the inlet might negate the efffect of the other side.
W-30 442 anyone?
While my ITG has been in the garage, I placed it on a paper towel (labeled side up). the towel now has some oil spots. Aside from the flow merits of the ITG, did anybody rinse and re-oil more lightly prior to installation? Is that a good ideal?