throttel body tuning

[Andrew C280]

ok i have a friend now who owns a mercedes benz dealer ship and after reading some post the mass air flow on a C43 is 77 mm which is bigger than the one on my c 280 my idea is to take my mass air flow tube off and switch it with the on from the C43.

he can get me an old mass air flow unit from a C43

this involves removing the actual mass air module from the tube in my c280 and putting it in the tube in the C43 mass air only thing thats on my mind is that the mass air sensor calculates the air flow in reference to the tube diameter? which will cause it to not work?

dose anyone understand what i am asking?

[98_Benzo]

I believe your asking if it's going to work......

I believe it should work, if your just changing the diameter of the hose. I think people have scraped their throttle bodies and gained a couple mm's (speedybenz?). In scraping your throttle body, your doing the same thing, increasing air intake. So in essence it should work.

Is he just giving you the C43 components or do you have to pay for them? If he's just giving you them, there's no harm done and I would say try it. It's not going to mess your engine up if you try it.

[CKlasse]

go for it!

[Andrew C280]

other question is the part that goes over the engine from a C36 different that the one on my C280, the part is from the mass air that goes over the engine to the air intake. it has like a block in the center if it was not that much more air could flow there.

he is going to give me a broken C43 mass air i will swap the module from my working one that way the wires connect

[Denlasoul]

Do MAS sensors only differ in housing size? I would think they may have different voltage currents to drive the wire.

[Rocky]

The inatake part that goes over the engine are not swappable between the C280 and the C36 (The C36 intake that oges over the engine is bigger then the C280). Someone tried it either here or bznsport and it was an expensive experiment. That C36 tube from what I heard cost $$$$.

[manny]

Not sure how much time/money I would spent on this project.
Unless you make some MAJOR modifications on the engine, a larger MAF will not likely do anything for you.
It's all a matter of airflow and air requirements, which are determined by how much an engine can inhale, or be force-fed.
But hey, who am I to say!
If you want to spend some time/effort & money on this, go ahead. ;)

[Andrew C280]

the hole point is to enlarge the hole system. it should have the same effect as enlarging the exhaust system. helps the engine breath better parts are free read above :)

[Andrew C280]

just wondering I looked at a few and some have like a cone like effect and some are straight through which is better ?

[Ashkan's C280]

I would think cone would be better...

[misterblack]

After speaking to many people outside of this MSG board.....GM and BMW electricians.

The reason you guys feel more power...is because you are running lean.

Going with a bigger MAS does not increase performance because your ecu only compensates for so much. An O2 sesor only reads information and does not make adjustments, your ECU does.

To whom ever does this mod...find the air/fuel ratio after you do this...

To those thinking about it.....find out if these guys are running lean or not.....don't take chances with your motor for small bs HP.

[Rocky]

Food for thought...

Difference between the -96 and the +97 C36 is a 5 speed manual in the +97 and a 4 speed auto in the -96.

The other difference is 8HP more in the +97 due to tweaking with the air intake.

[misterblack]

what tweaking was done to the intake system?
new air box? new pipe? what did they change?

thanks!

[Andrew C280]

identical to the one on the c280 other than the part that flows over the engine

[Ashkan's C280]

is this a DIY or does it have to go some where to be done?

[speedybenz]

I had a C43 MAS on my C280, V6. It was almost a bolt on mod. If I remember right it took just a little fiddling to get it installed and then took a couple of days for the ECU to recalibrate.

My current C43 MAS has been bored out to 84mm, from the stock 77mm. Remember to take out those resistrictive screens, both the plastic and steel ones.

Jeff

[Ashkan's C280]

can it be done on I6?

[Andrew C280]

what is the issue with using a air intake part from the c36 mainly the one that flows over the engine some one said they bought it and it dosent work ?

[audiophile]

Originally posted by speedybenz
I had a C43 MAS on my C280, V6. It was almost a bolt on mod. If I remember right it took just a little fiddling to get it installed and then took a couple of days for the ECU to recalibrate.

My current C43 MAS has been bored out to 84mm, from the stock 77mm. Remember to take out those resistrictive screens, both the plastic and steel ones.

Jeff what are the screens there for?:confused:

[misterblack]

screens are there to prevent damage of the very sensitive wire in the MAS. You can take it out though...your air filter should be doing it's job.


btw....when did benz start using Recardo Race seats?? ;)

[Andrew C280]

I rememeber reading some where that my car came with raceing seats they have high leg bolsters and deapbody bolsters. Part of the sport package on the C280?

1997 C6 package

C6 C280 Sport Package Firmer stabilizer bars and shocks. Faster steering ratio. Performance 205/60 R15 tire. Aluminum alloy wheels. Sport emblems. Monochromatic body trim. Sport front seats. Sport-design interior trim. Leather upholstery (grey or black). Leather-trimmed sport steering wheel and sport gearshift knob.

[Ashkan's C280]

speedy can this be done on I6 and andrew what do the rac seats look like and euro pins and monochrome trim stuff pics? curious

[misterblack]

sounds very..........sporty!

now all you need is more power to go with those race seats...

just playin'..... :)
nice ride.....

[Andrew C280]

there similar to these
seats (http://cgi.ebay.de/ws/eBayISAPI.dll?ViewItem&category=53956&item=7926449195&rd=1)

the monochrome trim means all the same colour, check out my pictures, after reseaching the seats are just sport there not raceing i guess i should change that.

the euro pins are the littel pins that pop up when the door is unlocked much cooler than the factory geek ones, you can get them at your mercedes parts dealer.

[Snake_99]

Gentlemen,

I am new to this site, but I am an old hot rodder. I have owned Corvettes, Mustang Cobras and a ’87 Grand National Buick. The cheapest easiest way to increase the air flow is to remove the screens/air diverters in front of and behind the MAF. The screens are installed during assembly to keep objects from hitting the MAF hot wire. The Diverters , no clue. They are way to far away from the intake to make any difference to the air flow direction. By removing the screens on my ’89 Vette I gained 5 hp on the chassis dyno. Not much, but free HP is a good thing. When modified, the airclearner will protect the front of the MAF and the intake manifold will protect the back. Throttle response seems better after the mod.

Have Fun :cool:

[nokia8860]

Originally posted by Snake_99
’87 Grand National Buick.

P!MP. I have been beating oh so badly many of times by this great beast!

[Snake_99]

But I know the secret to beating those great beasts. Never mess with any turbo thing when it is cooler than 50 F, never jump them on the highway above 60 mph. Make sure it is a hot day and slow them down to 15 or 20 mph before you punch it. By the time his turbo spools up, all he sees is tail lights!! :)

[Andrew C280]

how dose one remove the mess and plastic grill with out destroying the mass air flow unit never mind i figured it out i am going to run a few days with nothing blocking the air flow and then see.

[Snake_99]

Glad you figured it out.

Just remove the sensor from the unit by un-screwing the two torx screws and gently prying out the sensor.

I think I used a wooden dowel to "fram" out the flow director once I removed the screen from the other end.

Free HP is for me !!

[Andrew C280]

did you have to wait for your computer to adjust ?

[Snake_99]

The computer has this ability called "block learn", it figures it out pretty quick. Same with changed air filters or larger exhaust. :)

[Andrew C280]

exhaust note sounds better seems to run stronger on less octane I want to try 94, this fill up it was too expencive so I just ran 91

[Andrew C280]

tested for a week noticable power gain, no engine warning lights or adverse affects

[Ashkan's C280]

very nice, maybe a formal write up on this?

[Andrew C280]

ok take a hammer and a wood dowel after removing the mass air unit and smash the two grills out. bingo free hp